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Progress and perspectives in dielectric energy storage ceramics

Journal of advanced Ceramics 2021年第4期10卷 675-703页

作者： Dongxu LI Xiaojun ZENG Zhipeng LI Zong-Yang SHEN Hua HAO Wenqin LUO Xingcai WANG Fusheng SONG Zhumei WANG Yueming LI Energy Storage and Conversion Ceramic Materials Engineering Laboratory of Jiangxi Province China National Light Industry Key Laboratory of Functional Ceramic MaterialsSchool of Materials Science and EngineeringJingdezhen Ceramic UniversityJingdezhen 333403China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China Chengdu Hongke Electronic Technology Co. Ltd.Chengdu 610000China

Dielectric ceramic capacitors,with the advantages of high power density,fast chargedischarge capability,excellent fatigue endurance,and good high temperature stability,have been acknowledged to be promising candidates for solid-state pulse power *** review investigates the energy storage performances of linear dielectric,relaxor ferroelectric,and antiferroelectric from the viewpoint of chemical modification,macro/microstructural design,and electrical property *** progress of ceramic bulks and films for Pb-based and/or Pb-free systems is ***,we propose the perspectives on the development of energy storage ceramics for pulse power capacitors in the future.

关键词： energy storage ceramics dielectric relaxor ferroelectric antiferroelectric pulse power capacitor

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Solid-state stepwise temperature-programmable synthesis of bioinspired Fe-N-C oxygen reduction electrocatalyst featuring Fe-N_(5)configuration

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Nano Research 2025年第3期18卷 654-665页

作者： Wei Sang Somboon Chaemchuen Longyang Zhang Zechen Wang Xingchuan Li Cocoro Andrew Nagasaka Mo Xiong Naoki Ogiwara Cheng Chen Zhao Wang Jian Zhang Francis Verpoort Shichun Mu Zongkui Kou Tingting Wang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Department of Basic Science School of Arts and SciencesThe University of TokyoKomabaMeguro-kuTokyo 153-8902Japan MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter School of PhysicsXi’an Jiao tong UniversityXi’an 710049China Sanya Science and Education Innovation Park of Wuhan University of Technology Sanya 572000China Department of Chemical Engineering Faculty of EngineeringMahidol UniversityNakhon Pathom 73170Thailand School of Mathematical&Physical Sciences Wuhan Textile UniversityWuhan 430200China Joint Institute of Chemical Research(FFMiEN) Peoples Friendship University of Russia(RUDN University)6 Miklukho-Maklaya Str.117198 MoscowRussia National Research Tomsk Polytechnic University Lenin Avenue 30634050 TomskRussia Hubei Key Laboratory of Ferro &Piezo-electric Materials and DevicesFaculty of Physics and Electronic SciencesHubei UniversityWuhan 430062China School of Chemistry and Chemical Engineering Hainan UniversityHaikou 57022China

The bioinspired Fe-N-C features an asymmetric Fe-N_(5)configuration to produce active metal-oxygen intermediates by introducing axial N ligand into a symmetric Fe-N_(4) structure,enabling highly active oxygen reduction reaction(ORR).However,the artificial creation of active Fe-N_(5)configuration with a direct,facile and green method has been rarely developed yet,as current techniques involve complex processes and costly ***,we advance a novel solid-state stepwise temperature-programmable(SST)route to directly produce bioinspired Fe-N_(5)-*** then demonstrate that such a Fe-N_(5)-C exhibits a quite higher half-wave potential(0.92 V)with 22-fold faster ORR kinetics(15.6 mA·cm^(−2)@0.85 V)over that of the commercial Pt/C ***,we perform density functional theory(DFT)to find that the Fe is discharged with an extra 0.1 e^(−)through the axially coordinate N ligand,which significantly enhances the ability to activate O_(2) and enables an easier desorption of the crucial intermediate ^(*)OH on the Fe-N_(5)configuration over the conventional Fe-N_(4) structure.

关键词： single atom catalysts Fe-N_(5)coordination solvent-free synthesis oxygen reduction reaction(ORR) metal-air battery

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Design Engineering,synthesis Protocols,and Energy Applications of MOF-Derived Electrocatalysts

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Nano-Micro Letters 2021年第9期13卷 16-47页

作者： Amr Radwan Huihui Jin Daping He Shichun Mu School of Science Wuhan University of TechnologyWuhan 430070People’s Republic of China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan 528200People’s Republic of China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China

The core reactions for fuel cells,rechargeable metal-air batteries,and hydrogen fuel production are the oxygen reduction reaction(ORR),oxygen evolution reaction(OER),and hydrogen evolution reaction(HER),which are heavily dependent on the efficiency of *** attempts have previously been devoted in non-noble electrocatalysts born out of metal-organic frameworks(MOFs)for ORR,OER,and HER applications,due to the following advantageous reasons:(i)The significant porosity eases the electrolyte diffusion;(ii)the supreme catalyst-electrolyte contact area enhances the diffusion efficiency;and(iii)the electronic conductivity can be extensively increased owing to the unique construction block subunits for MOFs-derived ***,the recent progress of MOFs-derived electrocatalysts including synthesis protocols,design engineering,DFT calculations roles,and energy applications is discussed and *** can be concluded that the elevated ORR,OER,and HER performances are attributed to an advantageously well-designed high-porosity structure,significant surface area,and plentiful active ***,the perspectives of MOF-derived electrocatalysts for the ORR,OER,and HER are presented.

关键词： MOF-derived electrocatalysis Oxygen reduction reaction Oxygen evolution reaction Hydrogen evolution reaction

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Defects enriched hollow porous Co-N-doped carbons embedded with ultrafine CoFe/Co nanoparticles as bifunctional oxygen electrocatalyst for rechargeable flexible solid zinc-air batteries

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Nano Research 2021年第3期14卷 868-878页

作者： Zhao Lei Yangyang Tan Zeyi Zhang Wei Wu Niancai Cheng Runzhe Chen Shichun Mu Xueliang Sun College of Materials Science and Engineering Fuzhou UniversityFuzhou350108China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China Department of Mechanical and Materials Engineering The University of Western OntarioLondonONN6A 5B9Canada

The construction and design of highly efficient and inexpensive bifunctional oxygen electrocatalysts substitute for noble-metal-based catalysts is highly desirable for the development of rechargeable Zn-air battery(ZAB).In this work,a bifunctional oxygen electrocatalysts of based on ultrafine CoFe alloy(4-5 nm)dispersed in defects enriched hollow porous Co-N-doped carbons,made by annealing SiO2 coated zeolitic imidazolate framework-67(ZIF-67)encapsulated Fe *** hollow porous structure not only exposed the active sites inside ZIF-67,but also provided efficient charge and mass *** strong synergetic coupling among high-density CoFe alloys and Co-N_(x) sites in Co,N-doped carbon species ensures high oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)***-principles simulations reveal that the synergistic promotion effect between CoFe alloy and Co-N site effectively reduced the formation energy of from O^(*)to OH^(*).The optimized CoFe-Co@PNC exhibits outstanding electrocatalytic stability and activity with the overpotential of only 320 mV for OER at 10 mA·cm^(−2) and the half-wave potential of 0.887 V for ORR,outperforming that of most recent reported bifunctional electrocatalysts.A rechargeable ZAB constructed with CoFe-Co@PNC as the air cathode displays long-term cyclability for over 200 h and high power density(152.8 mW·cm^(−2)).Flexible solid-state ZAB with our CoFe-Co@PNC as the air cathode possesses a high open circuit potential(OCP)up to 1.46 V as well as good bending *** universal structure design provides an attractive and instructive model for the application of nanomaterials derived from MOF in the field of sustainable flexible energy applications device.

关键词： oxygen reduction reaction ultrafine CoFe alloy hollow porous carbons zeolitic imidazolate framework-67 Zn-air battery

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Tuning the dual-active sites of ZIF-67 derived porous nanomaterials for boosting oxygen catalysis and rechargeable Zn-air batteries

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Nano Research 2021年第7期14卷 2353-2362页

作者： Zeyi Zhang Yangyang Tan Tang Zeng Liyue Yu Runzhe Chen Niancai Cheng Shichun Mu Xueliang Sun College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Department of Mechanical and Materials Engineering University of Western OntarioLondonON N6A 5B9Canada

The rational control of the active site of metal-organic frameworks(MOFs)derived nanomaterials is essential to build efficient bifunctional oxygen reduction/evolution reaction(ORR/OER)***,through designing and constructing a Co_(3)O_(4)-Co heterostructure embedded in Co,N co-doped carbon polyhedra derived(Co_(3)O_(4)-Co@NC)from the in-situ compositions of ZIF-67 and cobalt nanocrystals synthesized by the strategy of in-situ NaBH4 reduction,the dual-active site(Co_(3)O_(4)-Co and Co-N_(x))is synchronously realized in a MOFs derived *** formed Co_(3)O_(4)-Co@NC shows excellent bifunctional electrocatalytic activity with ultra-small potential gap(ΔE=E_(j=10)(OER)–E_(1/2)(ORR))of 0.72 V,which surpasses the commercial Pt/C and RuO_(2) *** theory calculation results reveal that the excellent bifunctional electrocatalytic activity can be attributed to the charge redistribution of Co of Co-N_(x) induced by the synergistic effects of well-tuned active sites of Co_(3)O_(4)-Co nanoparticle and Co-N_(x),thus optimizing the rate-determining step of the desorption of O_(2)^(*)intermediate in ORR and OH^(*)intermediate in *** rechargeable Zn-air batteries with our bifunctional catalysts exhibit superior performance as well as high cycling *** simple-effective optimization strategy offers prospects for tuning the active site of MOF derived bifunctional catalyst in electrochemical energy devices.

关键词： dual-active sites bifunctional oxygen electrocatalysts metal−organic frameworks Zn-air batteries density functional theory(DFT)

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在导电陶瓷基体中加入hBN薄片来创制材料性能的各向异性

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Science China materials 2023年第11期66卷 4317-4325页

作者：梁华岳邹冀刘晶晶顾熠涵季伟王子涵王为民傅正义 Hubei Longzhong Laboratory Wuhan University of Technology Xiangyang Demonstration ZoneXiangyang 441000China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China Jingdezhen Huaxun Special Ceramics Co. Ltd.Jingdezhen 333000China

导电陶瓷的物理性能由连续的导电基体所决定,调控困难.在这项研究中,通过在陶瓷基体中引入hBN薄片,成功实现了导电陶瓷力学和物理性能各向异性的调控.以包含TiN、Al、硼和hBN的混合粉末为原料,通过放电等离子烧结制备了两种hBN含量不同... 详细信息

导电陶瓷的物理性能由连续的导电基体所决定,调控困难.在这项研究中,通过在陶瓷基体中引入hBN薄片,成功实现了导电陶瓷力学和物理性能各向异性的调控.以包含TiN、Al、硼和hBN的混合粉末为原料,通过放电等离子烧结制备了两种hBN含量不同的导电TiB_(2)-AlNhBN陶瓷.在垂直于烧结压力的方向上,TiB_(2)-AlN-60vol%hBN陶瓷在室温下的弯曲强度、断裂韧性、电导率和热导率分别为151±6.34MPa、2.62±0.31MPam^(1/2)、5.3×10^(5)S m^(−1)和77.87Wm^(-1)K^(-1).而在平行于烧结压力的方向上,室温电导率和热导率分别降低到2.0×10^(5)S m^(−1)和32.25Wm^(-1)K^(-1).这些差异是通过在导电基体中加入少量额外排列的hBN薄片而产生的,为材料选择和设计提供了新的机会.

关键词： hexagonal boron nitride texture microstructure mechanical property physical property

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Phosphate-Based Ionic Liquids for advanced Interface Modification in Perovskite Photovoltaics: Novel Insights for Ionic Liquid Molecule Design

SSRN

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SSRN 2024年

作者： Yang, Guo Wang, Fei Zhou, Chao Sun, Yonggui Wang, Taomiao Li, Qiannan Li, Yongjun Liang, Xiao Zhou, Xianfang Zhu, Quanyao Lin, Haoran Hu, Hanlin Hoffmann Institute of Advanced Materials Shenzhen Polytechnic University 7098 Liuxian Boulevard Shenzhen518055 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Wuhan China

Interface modification stands out as a crucial method to enhance the performance of perovskite solar cells. This study explores the utilization of the ionic liquid 1-Methyl-3-propylimidazolium phosphate (MPIMPH), containing phosphate (PO43-) groups, as a modifier for SnO2/perovskite interfaces. Detailed investigations delve into the specific impact of IL MPIMPH on defects in tin dioxide, perovskite defects, perovskite crystallization, morphology, and overall device performance. Initially, Density Functional Theory (DFT) is employed to evaluate the defect passivation potential of different anions on tin vacancies within the SnO2 matrix, revealing the exceptional defect passivation ability of the PO43- group. Chemical interactions between ILs MPIMPH and SnO2, as well as perovskite, are confirmed, establishing a fundamental basis for interface defect passivation. ILs-based interface modification enhances interface contact, influencing the lead iodide conversion into perovskite and perovskite crystallization, ultimately leading to the formation of high-quality perovskite thin films. ILs also effectively suppress interfacial charge recombination and optimize the energy alignment of the SnO2/perovskite interface to enhance carrier extraction. Benefiting from the interface modification with ILs, the optimized device achieved an impressive device efficiency of 24.24% with remarkable durability. This work provides an novel aspect for designing ionic liquids to enhance interface modification, contributing to upscaling and application of perovskite photovoltaics. © 2024, The Authors. All rights reserved.

关键词： Perovskite

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Improvement of Mechanical Properties and Wall Thickness Uniformity of Hollow Ceramic Spheres by Biaxial Rotation Slurry Injection technology

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Journal of Wuhan University of technology(materials Science) 2025年第3期 619-626页

作者：王秋阳周建 LIU Guizhen WANG Lin DING Zhongjun State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology National Deep Sea Center

Ceramic hollow spheres have great potential for deep-sea ***,the irregularity of the conventional molding process,among other reasons,results in low wall thickness uniformity of hollow *** solve this problem,in this work,we developed a biaxial rotation grouting process for deep-sea ceramic hollow buoyancy spheres,which improves the drawbacks of the traditional rotary grouting method that results in poor wall thickness uniformity of the hollow spheres due to its irregular rotational *** this paper,an experimental study was carried out to investigate the effects of different rotational methods,rotational speeds,rotational time,solid phase content,*** the wall thickness uniformity of ceramic hollow *** results show that the hollow floating balls prepared by the biaxial rotation method have the lowest wall thickness standard deviation (0.04) when the rotation speed is 60 rpm,the molding time is 8 min,and the solid phase content is 70 wt%.After the hydrostatic pressure test of 120 MPa,the hydrostatic compressive strength of hollow spheres prepared by the biaxial rotation method was increased by 31.67% compared with that of the traditional process.

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A review of efficient electrocatalysts for the oxygen evolution reaction at large current density

DeCarbon

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DeCarbon 2024年第3期5卷 24-40页

作者： Youtao Yao Jiahui Lyu Xingchuan Li Cheng Chen Francis Verpoort John Wang Zhenghui Pan Zongkui Kou State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070PR China Sanya Science and Education Innovation Park of Wuhan University of Technology Sanya572000PR China Hubei Key Laboratory of Fuel Cell Wuhan University of TechnologyWuhan430070PR China Department of Materials Science and Engineering National University of Singapore117574SingaporeSingapore Institute of Materials Research and Engineering(IMRE) A*STAR(Agency for ScienceTechnology and Research)2 Fusionopolis WaySingapore138634Singapore National University of Singapore(Chongqing)Research Institute Chongqing401123PR China School of Materials Science and Engineering Tongji UniversityShanghai201804PR China

Within the framework of achieving global carbon neutrality,utilizing electrocatalytic water splitting to produce“green hydrogen”holds significant promise as an effective *** strategic development of economic,efficient,and robust anode oxygen evolution reaction(OER)catalysts is one of the imminent bottlenecks for scalable application of electrolyzing water into hydrogen and oxygen,particularly under actual yet harsh operating conditions such as large current density(LCD).In this review,we intend to summarize the advances and challenges in the understanding of the electrocatalytic OER at ***,the impact of LCD on the electron transfer,mass transportation efficiency and catalyst stability is identified and ***,five basic principles for catalyst design,namely the dimension of the materials,surface chemistry,creation of electron transfer pathways,synergy among nano-,micro-,and macroscale structures,and catalyst-support interaction,are systematically ***,the correlation between the synergistic function of the multiscale structures and the catalyst-support interaction is highlighted to direct improvements in catalyst efficiency and durability at the ***,an outlook is prospected to further our understanding of these topics and provide related researchers with potential research areas.

关键词： Oxygen evolution reaction Electrocatalyst Large current density Green hydrogen Water splitting

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碱性和酸性条件下均稳定的高效氧电催化剂:具有多活性中心的多孔纳米片复合材料

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Science China materials 2023年第4期66卷 1407-1416页

作者：夏雁楠程义王锐孟子寒迈耶昆庭赵川张海宁罗任李扬唐浩林 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan 528200China Hunan Provincial Key Laboratory of Nonferrous Value-added Metallurgy Central South UniversityChangsha 410083China School of Chemistry The University of New South WalesSydneyNew South Wales2052Australia

可逆的氧还原反应(ORR)和氧析出反应(OER)需要多种类型的活性中心来缓冲质子耦合/解耦的四电子过程.本文通过一种简单环保的熔融NaCl模板法合成了碳包覆FeNi合金、金属-N物种和N缺陷共掺杂的多孔纳米片(FeNi-N/PCN).得到的FeNi-N/PCN作... 详细信息

可逆的氧还原反应(ORR)和氧析出反应(OER)需要多种类型的活性中心来缓冲质子耦合/解耦的四电子过程.本文通过一种简单环保的熔融NaCl模板法合成了碳包覆FeNi合金、金属-N物种和N缺陷共掺杂的多孔纳米片(FeNi-N/PCN).得到的FeNi-N/PCN作为氧电催化剂在碱性(E_(1/2)为0.88 V_(RHE),E_(j=10)为1.57 V_(RHE))和酸性介质(E_(1/2)为0.78 V_(RHE),E_(j=10)为1.76 V_(RHE))中均表现出优异的ORR和OER性能.此外,该FeNi-N/PCN催化剂在锌空气电池中表现出224 m W c m^(-2)的功率密度和691 m A h g^(-1)的比容量,分别是Pt/RuO_(2)组合的1.34和1.20倍.这些优异的性能可以归因于具有多类型活性位点的层状碳纳米片结构,包括碳包覆FeNi合金、N缺陷和金属-N位点(M–N_(x)).

关键词：碳纳米片 FeNi合金电催化剂锌空气电池氧析出反应多孔纳米片碳包覆酸性介质

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