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学者姓名：娄晓杰
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Abstract ：
Barocaloric effects in a layered hybrid organic-inorganic compound, (C10H21NH3)(2)MnCl4, that are reversible and colossal under pressure changes below 0.1 GPa are reported. This barocaloric performance originates in a phase transition characterized by different features: A strong disordering of the organic chains, a very large volume change, a very large sensitivity of the transition temperature to pressure and a small hysteresis. The obtained values are unprecedented among solid-state cooling materials at such low pressure changes and demonstrate that colossal effects can be obtained in compounds other than plastic crystals. The temperature-pressure phase diagram displays a triple point indicating enantiotropy at high pressure.
Keyword ：
barocaloric effects calorimetry hybrid layered perovskites phase diagrams Raman scattering
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| GB/T 7714 | Li, Junning , Barrio, Maria , Dunstan, David J. et al. Colossal Reversible Barocaloric Effects in Layered Hybrid Perovskite (C10H21NH3)(2)MnCl4 under Low Pressure Near Room Temperature [J]. | ADVANCED FUNCTIONAL MATERIALS , 2021 , 31 (46) . |
| MLA | Li, Junning et al. "Colossal Reversible Barocaloric Effects in Layered Hybrid Perovskite (C10H21NH3)(2)MnCl4 under Low Pressure Near Room Temperature" . | ADVANCED FUNCTIONAL MATERIALS 31 . 46 (2021) . |
| APA | Li, Junning , Barrio, Maria , Dunstan, David J. , Dixey, Richard , Lou, Xiaojie , Tamarit, Josep-Lluis et al. Colossal Reversible Barocaloric Effects in Layered Hybrid Perovskite (C10H21NH3)(2)MnCl4 under Low Pressure Near Room Temperature . | ADVANCED FUNCTIONAL MATERIALS , 2021 , 31 (46) . |
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Abstract ：
In materials science, intentional doping has been widely used to improve the properties of a variety of materials. However, such an approach is not yet exploited in the fast-growing field of electrocaloric materials, which represent a serious alternative for next-generation cooling systems. Here we demonstrate with Ba0.9Sr0.1Hf0.1Ti0.9O3, an ecofriendly ferroelectric material, that doping with 2% of Cu introduces defect dipoles into the ferroelectric matrix and results in (i) enhancement of the adiabatic temperature change AT by up to 54% while maintaining performance after a large number (up to 104) of electric field cycles, (ii) suppression of the parasitic irreversibility of AT between on-field and off -field states, and (iii) an alternative design of refrigeration cycle with a prepoled sample, allowing a two-field-step process showing both conventional (AT> 0) and inverse (AT< 0) responses when the field is sequentially varied. We also demonstrate that doping significantly increases the energy storage density (by up to 72%). The defect engineering approach therefore offers a path for designing ferroelectrics with improved electrocaloric performances. Beyond ferroelectrics, this strategy could also be promising in other solid-state caloric materials (magnetocalorics, elastocalorics, etc.).
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| GB/T 7714 | Li, Junning , Lv, Jing , Zhang, Dawei et al. Doping-induced Polar Defects Improve the Electrocaloric Performance of Ba0(0.9)Sr(0.1)Hf(0.1)Ti(0.9)O(3) [J]. | PHYSICAL REVIEW APPLIED , 2021 , 16 (1) . |
| MLA | Li, Junning et al. "Doping-induced Polar Defects Improve the Electrocaloric Performance of Ba0(0.9)Sr(0.1)Hf(0.1)Ti(0.9)O(3)" . | PHYSICAL REVIEW APPLIED 16 . 1 (2021) . |
| APA | Li, Junning , Lv, Jing , Zhang, Dawei , Zhang, Lixue , Hao, Xihong , Wu, Ming et al. Doping-induced Polar Defects Improve the Electrocaloric Performance of Ba0(0.9)Sr(0.1)Hf(0.1)Ti(0.9)O(3) . | PHYSICAL REVIEW APPLIED , 2021 , 16 (1) . |
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Abstract ：
Supercapacitors (SCs) have attracted considerable attention due to their outstanding power density and cycling performance. In this work, the amino-rich surface functional groups (–NH– and –N+H-) surface modified Ti3C2Tx MXene nanosheets (N–Ti3C2Tx-200) are synthesized via the solvothermal method, which is accompanied by the generation of surface titanium atom defects. Moreover, kinetic analysis confirms that the surface amino-rich functional groups are in favor of the rapid hydrogen ions transmission within electrode, leading to an enhancement of capacitive capacitance. Specifically, the flexible N–Ti3C2Tx-200 electrode exhibits a volumetric capacity of 936.0 C cm−3, which is 1.49 times that of the pristine Ti3C2Tx. Further, the modified electrode even can keep a volumetric capacity of 839.7 C cm−3 at 1 V s−1, which is much higher than that of the pristine Ti3C2Tx (277.7 C cm−3). More importantly, the hybrid aqueous proton supercapacitors (HAPSs), constructed by N–Ti3C2Tx-200 anode and copper hexacyanoferrate (CuHCF) cathode, achieve a 2 V wide voltage window and an ultrahigh volumetric energy density of 104.9 Wh L−1 at 0.38 kW L−1. This work offers a basic understanding of the amino-rich surface-modified flexible Ti3C2Tx film electrodes with high volumetric energy density and high-rate performance, providing a strategy to fabricate HAPSs with superior volumetric capacity. © 2021 Elsevier B.V.
Keyword ：
Anodes Capacitance Copper compounds Nanosheets Supercapacitor Surface treatment
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| GB/T 7714 | Tian, Yapeng , Que, Bowen , Luo, Yangyang et al. Amino-rich surface-modified MXene as anode for hybrid aqueous proton supercapacitors with superior volumetric capacity [J]. | Journal of Power Sources , 2021 , 495 . |
| MLA | Tian, Yapeng et al. "Amino-rich surface-modified MXene as anode for hybrid aqueous proton supercapacitors with superior volumetric capacity" . | Journal of Power Sources 495 (2021) . |
| APA | Tian, Yapeng , Que, Bowen , Luo, Yangyang , Ju, Maomao , Tang, Yi , Lou, Xiaojie et al. Amino-rich surface-modified MXene as anode for hybrid aqueous proton supercapacitors with superior volumetric capacity . | Journal of Power Sources , 2021 , 495 . |
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Abstract ：
Developing high-performance dielectric capacitors is essential to meet the growing demands of hybrid electric vehicles and high-power applications. The energy storage efficiency and the temperature-variant energy storage properties should be considered besides the energy density. In this work, we prepared (1 - x)(0.8NaNbO(3)-0.2SrTiO(3)) - xBi(Zn0.5Sn0.5)O-3 (abbreviated as (1 - x)(NN-ST) - xBZS) lead-free ceramics, where ion disorder is induced in the A-B sites. The experimental results indicate that the antiferroelectric orthorhombic R phase is stabilized, and the breakdown strength is enhanced due to the decreased grain size after BZS modification, which are conducive to optimizing the energy storage performance. The piezoresponse force microscopy (PFM) observation reveals that the incorporated BZS promotes the reversibility of domains, resulting in enhanced energy storage efficiency. Therefore, an energy density of 5.82 J cm(-3) and an efficiency of 92.3% are simultaneously obtained in the 0.96(NN-ST) - 0.04BZS composition, and the obtained efficiency in this work reaches a record high in NN-based energy storage ceramics. Especially, the sample displays extraordinary temperature stability, that is, high energy storage density (3.6-4.31 J cm(-3)) and efficiency (90-95%) are achieved in a wide temperature range from -60 degrees C to 180 degrees C. Our work would provide a powerful strategy for designing high-performance energy storage capacitors operating in harsh environments.
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| GB/T 7714 | Kang, Ruirui , Wang, Zepeng , Yang, Weijie et al. Extraordinary energy storage performance and thermal stability in sodium niobate-based ceramics modified by the ion disorder and stabilized antiferroelectric orthorhombic R phase [J]. | JOURNAL OF MATERIALS CHEMISTRY A , 2021 , 9 (43) : 24387-24396 . |
| MLA | Kang, Ruirui et al. "Extraordinary energy storage performance and thermal stability in sodium niobate-based ceramics modified by the ion disorder and stabilized antiferroelectric orthorhombic R phase" . | JOURNAL OF MATERIALS CHEMISTRY A 9 . 43 (2021) : 24387-24396 . |
| APA | Kang, Ruirui , Wang, Zepeng , Yang, Weijie , Zhu, Xiaopei , Shi, Peng , Gao, Yangfei et al. Extraordinary energy storage performance and thermal stability in sodium niobate-based ceramics modified by the ion disorder and stabilized antiferroelectric orthorhombic R phase . | JOURNAL OF MATERIALS CHEMISTRY A , 2021 , 9 (43) , 24387-24396 . |
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Abstract ：
The application of dielectric capacitors with high energy density is very important to solve the increasingly serious energy crisis. However, the further improvement of energy density is seriously confining by their poor breakdown fields. In this work, outstanding energy storage performance is achieved in Sr0.7BixTiO3 (x = 0.1, 0.2, 0.3 and 0.4) ceramics via A-site defect and grain size tuning. It was found that the moderate Bi3+ content is helpful to reduce sintering temperature and refine grain size, which lead to higher activation energy and breakdown field. Besides, moderate Bi3+ doping in A-site enhances polarity owing to the hybridizations between 6p orbital of Bi and 2p orbital of O. Thus, a high recoverable energy density of 4.77 J/cm(3) with prominent efficiency of 85.7% at 570 kV/cm is realized in Sr0.7Bi0.2TiO3 ceramic. Moreover, the Sr0.7Bi0.2TiO3 ceramic also displays superior thermal stability from 20 degrees C to 160 degrees C and excellent fatigue endurance over 10(5) cycles. Our results in this work offer a better understanding and design methodology for developing novel high-performance dielectric capacitors.
Keyword ：
Dielectric capacitors Grain size engineering Recoverable energy density Sr0.7BixTiO3 ceramics
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| GB/T 7714 | Zhu, Xiaopei , Shi, Peng , Kang, Ruirui et al. Enhanced energy storage density of Sr0.7BixTiO3 lead-free relaxor ceramics via A-site defect and grain size tuning [J]. | CHEMICAL ENGINEERING JOURNAL , 2021 , 420 . |
| MLA | Zhu, Xiaopei et al. "Enhanced energy storage density of Sr0.7BixTiO3 lead-free relaxor ceramics via A-site defect and grain size tuning" . | CHEMICAL ENGINEERING JOURNAL 420 (2021) . |
| APA | Zhu, Xiaopei , Shi, Peng , Kang, Ruirui , Li, Siyi , Wang, Zepeng , Qiao, Wenjing et al. Enhanced energy storage density of Sr0.7BixTiO3 lead-free relaxor ceramics via A-site defect and grain size tuning . | CHEMICAL ENGINEERING JOURNAL , 2021 , 420 . |
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Abstract ：
Piezoelectric ceramics with high strain can convert electrical energy and mechanical energy into each other for a wide range of applications. (1-x)Bi0.5Na0.5TiO3-x(0.5Ba0.7Ca0.3TiO3-0.5BaTi0.8Zr0.2O3) (BNT-x(BCT-BZT)) lead-free piezoelectric ceramics were prepared through solid-state reaction methods. The structural, dielectric, field-induced strain and energy storage properties of the ceramics were investigated systematically by various characterization techniques. A large field-induced strain of 0.42% with negligible negative strain and large reverse piezoelectric coefficient of 547 pm/V are obtained in BNT-9(BCT-BZT) ceramics. A large recoverable energy storage of 3.49 J/cm3 under 360 kV/cm and high energy storage efficiency of 64.9% are achieved in the BNT-10(BCT-BZT) ceramics. It believes that the large strain with negligible negative strain is mainly due to the crossover of relaxor nonpolar state to ferroelectric polar state. We believe that the BNT-x(BCT-BZT) ceramics are favorable for the practical applications in the mobile electronic devices. © 2020 Elsevier B.V.
Keyword ：
Energy storage Ferroelectric ceramics Ferroelectricity Ferroelectric materials Piezoelectric ceramics Piezoelectricity Solid state reactions
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| GB/T 7714 | Shi, Peng , Li, Tangyuan , Lou, Xiaojie et al. Large electric-field-induced strain and energy storage properties in Bi0.5Na0.5TiO3-(0.5Ba0.7Ca0.3TiO3-0.5BaTi0.8Zr0.2O3) lead-free relaxor ferroelectric ceramics [J]. | Journal of Alloys and Compounds , 2021 , 860 . |
| MLA | Shi, Peng et al. "Large electric-field-induced strain and energy storage properties in Bi0.5Na0.5TiO3-(0.5Ba0.7Ca0.3TiO3-0.5BaTi0.8Zr0.2O3) lead-free relaxor ferroelectric ceramics" . | Journal of Alloys and Compounds 860 (2021) . |
| APA | Shi, Peng , Li, Tangyuan , Lou, Xiaojie , Yu, Zhonghai , Zhu, Xiaopei , Zhou, Chao et al. Large electric-field-induced strain and energy storage properties in Bi0.5Na0.5TiO3-(0.5Ba0.7Ca0.3TiO3-0.5BaTi0.8Zr0.2O3) lead-free relaxor ferroelectric ceramics . | Journal of Alloys and Compounds , 2021 , 860 . |
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Abstract ：
Nickel hydroxide, as a high high-efficiency electroactive material, is a promising electroactive material for advanced hybrid supercapacitors due to its high theoretical capacity, low-cost, and good thermal and chemical stabilities. Although various nanostructures of nickel hydroxide have been widely reported for energy storage devices, such as nanoparticles, nanosheets, nanoflowers, and so on, nickel hydroxide with one-dimensional nanowire morphology has been rarely investigated until now. Meanwhile, previous reports have shown that the energy storage performance of alpha-Ni(OH)(2) is superior to other types of nickel hydroxides. Based on the above points of view, alpha type Ni(OH)(2) nanowires with three-dimensional (3D) reticulation containing SO42- (abbreviated as NSOH NWs) were successfully obtained by a sulfate assisted hydrothermal approach in the present work and further employed as an electroactive material in hybrid supercapacitors (HSCs). The formation mechanism of the NSOH and the effects of SO42- are also discussed. Thanks to its novel 3D porous morphology and alpha-type phase structure, the as-prepared NSOH NW electrode presents a high specific capacity of 246.3 mA h g(-1) at 1 A g(-1), along with a good cycling stability of 91.7% after 4000 cycles. Meanwhile, the as-assembled NSOH NWs//AC HSCs can provide a high energy density of 59.8 W h kg(-1) at a power density of 830.3 W kg(-1). The HSCs also show 91.5% specific capacity retention after 10 000 cycles. All above results manifest that the proposed NSOH NWs with 3D reticulation have significant potential for advanced HSC applications.
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| GB/T 7714 | Li, Wei , Huang, Zhongzheng , Jia, Yaduo et al. Sulfate assisted synthesis of alpha-type nickel hydroxide nanowires with 3D reticulation for energy storage in hybrid supercapacitors [J]. | MATERIALS CHEMISTRY FRONTIERS , 2021 , 6 (1) : 94-102 . |
| MLA | Li, Wei et al. "Sulfate assisted synthesis of alpha-type nickel hydroxide nanowires with 3D reticulation for energy storage in hybrid supercapacitors" . | MATERIALS CHEMISTRY FRONTIERS 6 . 1 (2021) : 94-102 . |
| APA | Li, Wei , Huang, Zhongzheng , Jia, Yaduo , Cui, Yunlong , Shi, Peng , Li, Tingting et al. Sulfate assisted synthesis of alpha-type nickel hydroxide nanowires with 3D reticulation for energy storage in hybrid supercapacitors . | MATERIALS CHEMISTRY FRONTIERS , 2021 , 6 (1) , 94-102 . |
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Abstract ：
The 0.95K(0.42)Na(0.58)Nb(0.96)Sb(0.04)O(3)-0.02BaZrO(3)-0.03Bi(0.5)K(0.5)HfO(3) ceramic was fabricated via a conventional solid-state reaction. This ceramic exhibits the diffuse polymorphic phase boundary (PPB) near room temperature. The dielectric, ferroelectric, electromechanical, electrocaloric, and dielectric energy storage properties were studied systemically. The normalized large signal d(33)* values are approximately 400-600 pm/V at measured temperatures and electric fields, which are larger than or comparable with the values reported in other lead-free compositions. The electrocaloric strength is enhanced at the broad region of PPB provided by the indirect and direct measurements. At low field of 30 kV/cm, the dielectric energy storage is similar to 0.12-018 J/cm(3) at relative broad temperature range due to the diffuse nature of polymorphic phase boundary. Theoretical simulations reveal that multi-element dopants, such as Sb5+, Hf4+, Zr4+, and Bi3+ ions, could induce the breaking of local structure symmetry in the orthorhombic phase to form the PPB. In addition, the charge distribution may also break the long-range ferroelectric order through the analysis of Bader charge. Our study suggests that the K0.5Na0.5NbO3-based ceramic exhibits improved performance and good thermal stability in piezoelectric, electrocaloric, and dielectric energy storage characteristics in terms of the design of multi-element dopants to form the PPB and it will benefit the promising applications in electronic devices.
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| GB/T 7714 | Wang, Xiangjian , Lou, Xiaojie , Geng, Wenping et al. Multifunctionality in (K,Na)NbO3-based ceramic near polymorphic phase boundary [J]. | JOURNAL OF APPLIED PHYSICS , 2021 , 130 (6) . |
| MLA | Wang, Xiangjian et al. "Multifunctionality in (K,Na)NbO3-based ceramic near polymorphic phase boundary" . | JOURNAL OF APPLIED PHYSICS 130 . 6 (2021) . |
| APA | Wang, Xiangjian , Lou, Xiaojie , Geng, Wenping , Yao, Yingbang , Tao, Tao , Liang, Bo et al. Multifunctionality in (K,Na)NbO3-based ceramic near polymorphic phase boundary . | JOURNAL OF APPLIED PHYSICS , 2021 , 130 (6) . |
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Novel (1 & minus;x)(0.65Bi0.5Na0.5TiO3-0.35Bi0.2Sr0.7TiO3)-xCaZrO3 (BNT-BST-xCZ, x = 0 & ndash;0.15) ceramics were manufactured through a solid phase sintering process and their structural and electrical performance have been systematically investigated. By doping CaZrO3, a higher recoverable energy storage density of 2.9 J/cm3 and energy storage efficiency of 80% at 330 kV/cm can be simultaneously obtained in BNT-BST-0.1CZ ceramic. Further analysis with the aid of finite element simulation indicates that the improvement of energy storage performance lies in the refined grain size and reduced defects, which are both conductive to improve the dielectric breakdown strength. More importantly, incorporating CaZrO3 gives slimmer hysteresis loops as well as excellent temperature (20 & ndash;150 degrees C) and frequency (5 & ndash;200 Hz) stability of energy storage properties. Moreover, a stable dielectric permittivity of in an ultra-wide range from 44 degrees C to 483 degrees C was achieved in BNT-BST-0.10CZ ceramic. Our findings suggest that the BNT-BST-0.1CZ ceramic has great potential applications in pulsed power systems and high-temperature capacitors. (c) 2021 Elsevier B.V. All rights reserved.
Keyword ：
Breakdown strength Energy storage Lead-free ceramics Temperature stability
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| GB/T 7714 | Guo, Xudong , Shi, Peng , Lou, Xiaojie et al. Superior energy storage properties in (1 & minus;x)(0.65Bi(0.5)Na0.5TiO(3)-0.35Bi(0.2)Sr(0.7)TiO(3))-xCaZrO(3) ceramics with excellent temperature stability [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2021 , 876 . |
| MLA | Guo, Xudong et al. "Superior energy storage properties in (1 & minus;x)(0.65Bi(0.5)Na0.5TiO(3)-0.35Bi(0.2)Sr(0.7)TiO(3))-xCaZrO(3) ceramics with excellent temperature stability" . | JOURNAL OF ALLOYS AND COMPOUNDS 876 (2021) . |
| APA | Guo, Xudong , Shi, Peng , Lou, Xiaojie , Liu, Qida , Zuo, Hong . Superior energy storage properties in (1 & minus;x)(0.65Bi(0.5)Na0.5TiO(3)-0.35Bi(0.2)Sr(0.7)TiO(3))-xCaZrO(3) ceramics with excellent temperature stability . | JOURNAL OF ALLOYS AND COMPOUNDS , 2021 , 876 . |
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Abstract ：
Dielectric ceramics are highly favorable for pulsed power applications owing to their ultra-fast charge-discharge speed and excellent reliability. However, their low energy density under low electric fields remains as a bottleneck for them to be employed in integrated electronic devices with shrinking dimensions. In this work, we have designed a comprehensive strategy to synthesize lead-free (Bi1/2Na1/2)1−xSrxTi0.98(Fe1/2Nb1/2)0.02O3 (BNT-xST-2FN, x = 0.30, 0.35, 0.40 and 0.45) ceramics via traditional solid-state method. On one hand, the hybridizations of Bi3+ orbitals and the displacement of B-site cations under the applied electric field lead to a high polarization. On the other hand, the (Fe1/2Nb1/2)4+ complex-ion and SrTiO3 were introduced to improve the relaxor behavior of the system, resulting in a high energy-storage efficiency. In this way, an excellent energy density of 3.36 J/cm3 and a high energy efficiency of 81% are simultaneously achieved in the BNT-0.40ST-0.02FN composition under a low electric field of 170 kV/cm, which is superior to other BNT-based materials under similar electric fields. Moreover, the ceramic exhibits a superior thermal stability (25–200 °C). This work provides a promising approach for designing high-performance lead-free energy storage ceramics under low electric fields. © 2021 Elsevier B.V.
Keyword ：
Electric discharges Energy efficiency Energy storage Ferroelectric ceramics Ferroelectric materials Free energy Iron compounds Niobium compounds Storage (materials) Strontium titanates Titanium compounds
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| GB/T 7714 | Kang, Ruirui , Wang, Zepeng , Lou, Xiaojie et al. Energy storage performance of Bi0.5Na0.5TiO3-based relaxor ferroelectric ceramics with superior temperature stability under low electric fields [J]. | Chemical Engineering Journal , 2021 , 410 . |
| MLA | Kang, Ruirui et al. "Energy storage performance of Bi0.5Na0.5TiO3-based relaxor ferroelectric ceramics with superior temperature stability under low electric fields" . | Chemical Engineering Journal 410 (2021) . |
| APA | Kang, Ruirui , Wang, Zepeng , Lou, Xiaojie , Liu, Wenyuan , Shi, Peng , Zhu, Xiaopei et al. Energy storage performance of Bi0.5Na0.5TiO3-based relaxor ferroelectric ceramics with superior temperature stability under low electric fields . | Chemical Engineering Journal , 2021 , 410 . |
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