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Deciphering Water Oxidation Catalysts:The Dominant Role of Surface Chemistry over Reconstruction Degree in Activity Promotion

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Nano-Micro Letters 2025年第3期17卷 340-354页

作者： Li An Jianyi Li Yuanmiao Sun Jiamin Zhu Justin Zhu Yeow Seow Hong Zhang Nan Zhang Pinxian Xi Zhichuan J.Xu Chun‑Hua Yan State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceFrontiers Science Center for Rare IsotopesCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000People’s Republic of China School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore Faculty of Materials Science and Energy Engineering Institute of Technology for Carbon NeutralityShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055People’s Republic of China Key Laboratory of Electromagnetic Materials and Devices National Center for International Research On Photoelectric and Energy MaterialsSchool of Materials and EnergyElectron Microscopy CenterYunnan UniversityKunming 650091People’s Republic of China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030People’s Republic of China Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsPKU‑HKU Joint Laboratory in Rare Earth Materials and Bioinorganic ChemistryPeking UniversityBeijing 100871People’s Republic of China

Water splitting hinges crucially on the availability of electrocatalysts for the oxygen evolution *** surface reconstruction has been widely observed in perovskite catalysts,and the reconstruction degree has been often correlated with the activity ***,a systematic study on the roles of Fe substitution in activation of perovskite LaNiO_(3)is *** substituting Fe content influences both current change tendency and surface reconstruction ***_(0.9)Fe_(0.1)O_(3)is found exhibiting a volcano-peak intrinsic activity in both pristine and reconstructed among all substituted perovskites in the LaNi_(1-x)Fe_(x)O_(3)(x=0.00,0.10,0.25,0.50,0.75,1.00)*** reconstructed LaNi_(0.9)Fe_(0.1)O_(3)shows a higher intrinsic activity than most reported NiFe-based ***,density functional theory calculations reveal that Fe substitution can lower the O 2p level,which thus stabilize lattice oxygen in LaNi0.9Fe0.1O3 and ensure its long-term ***,it is vital interesting that activity of the reconstructed catalysts relied more on the surface chemistry rather than the reconstruction *** effect of Fe on the degree of surface reconstruction of the perovskite is decoupled from that on its activity enhancement after surface *** finding showcases the importance to customize the surface chemistry of reconstructed catalysts for water oxidation.

关键词： Oxygen evolution reaction Perovskite oxides Doping Activation and reconstruction

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The interfacial engineering of metal electrodes for high-specific-energy and long-lifespan batteries

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iEnergy 2022年第2期1卷 204-222页

作者： Haomiao Li Yi Shen Zhuchan Zhang Anran Cheng Kangli Wang Xianbo Zhou Peng Cai Yujie Zhang Mengjun Li Min Zhou Wei Wang Ruxing Wang Kai Jiang School of Electrical and Electronic Engineering Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and TechnologyWuhan 430074China School of Material Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China

High-specific-energy batteries with long-lifespan are the development aspiration for energy storage *** electrodes with high specific capacity and low reduction potential are potential candidates for next-generation high-specific-energy ***,the stability of the metal electrode batteries is constantly suffered from the unstable interface issue during the plat-ing/stripping process,such as dendrite formation,dynamic evolution of solid electrolyte interphase,and other accompanied side *** solve these challenges,numerous researches have been intensively studied based on the interfacial engineering of metal electrodes,including electrode configuration optimization,interfacial chemistry regulation and solid-solid interface construc-tion,and the recent progress is elaborately introduced in this ***,the dendrite issues cannot be entirely prohibited in solid metal electrodes,which motivate the search for potential ***-metal electrodes with completely reversible structural changes and high mass transfer rate are rendered as an effective approach to solve the dendrite ***,the development of liquid metal electrode batteries is reviewed in this paper,in which the interfacial issues are explicated and some commendable achievements are *** the end,the implementation of interfacial engineering and the development roadmap of the metal electrode batteries are prospected.

关键词： Metal electrodes interfacial engineering metal dendrites solid state batteries liquid metal batteries

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Study on the Deterioration Characteristics of ECR Glass Fiber in Composite Insulators Under Acid-Heat Conditions 18th

Study on the Deterioration Characteristics of ECR Glass Fibe...

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18th Annual Conference of China Electrotechnical Society, ACCES 2023

作者： Huang, Ziheng Zhang, Dandan Lu, Ming Gao, Chao Li, Zhenbiao Wan, Zhiyu You, Yuwei Wang, Zehong School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan430074 China Ministry of Education Wuhan430074 China State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan430074 China Henan Key Laboratory of Power Transmission Line Galloping Prevention and Control Technology State Grid Henan Electric Power Research Institute Zhengzhou450052 China

ISBN: (纸本)9789819710638

During the actual operation of composite insulators, they may be affected by various deterioration factors. Acid generated by partial discharge and abnormal heating may accelerate the deterioration of ECR glass fibers in composite insulators, leading to decay-like fracture of composite insulators. In this article, the deterioration experiment of ECR glass fibers comprehensively considered the effects of acid and temperature. The acid heat deterioration experiment of ECR glass fibers were conducted to investigate the changes in morphology and mechanical properties of ECR glass fibers. The results showed that the degradation effect of acid solution on ECR glass fibers was not significant at room temperature, while the surface of ECR glass fibers deteriorated by acid heat became rough and a large amount of powdery debris appeared;Meanwhile, compared to nitric acid, oxalic acid has a more severe degradation effect on glass fibers. After 12 days of deterioration with 1mol/L oxalic acid at 80 ℃, the tensile strength and elastic modulus of glass fibers decrease by more than 90%;After acid heat degradation, there are a large number of "debris" on the surface of the glass fiber. Fiber damage and fracture phenomena occur at the same time. © Beijing Paike Culture Commu. Co., Ltd. 2024.

关键词： Tensile strength

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Low-Carbon Operation of Power Systems with Solar-Assisted Carbon Capture Power Plants Considering Interval-Probabilistic Cvar

SSRN

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SSRN 2024年

作者： Liang, Shuhao Lou, Suhua Luo, Yi State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan430074 China

By leveraging solar thermal energy to offset the power output loss and broaden the net output adjustable range of carbon capture units, solar-assisted carbon capture power plants possess benefits in terms of energy economy, reserve capacity, and carbon emission reduction. This study focuses on the operation and scheduling of this advanced low-carbon power generation technology within power systems featuring high wind power penetration. Firstly, based on the analysis of the operational mechanism and energy flow relationship of solar-assisted carbon capture power plants, a flexible operation model is proposed to elucidate their characteristics in power generation, carbon capture, and thermal storage. Additionally, the conventional output and net output operation ranges of various carbon capture power plants are quantitatively studied by constructing a two-dimensional coordinate diagram. Secondly, based on the mathematical theory of interval-probabilistic CVaR, a quantified risk assessment method is introduced to evaluate the supply-demand imbalance risk in system operation, incorporating both interval and probabilistic uncertainty variables. Thirdly, a risk-aware operation scheduling model is developed to explore the capability of solar-assisted carbon capture power plants in enhancing the system's operation economic benefits and reducing the system's supply-demand imbalance risk. Finally, the numerical simulation and sensitivity analysis results on the modified IEEE-39 bus system have validated the low-carbon economic benefits and risk mitigation capability of solar-assisted carbon capture power plants participating in the system's operation. © 2024, The Authors. All rights reserved.

关键词： Wind power

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Enabling ultrafast lithium-ion conductivity of Li_(2)ZrCl_(6) by indium doping

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Chinese Chemical Letters 2022年第10期33卷 4635-4639页

作者： Shuai Chena Chuang Yu Shaoqing Chen Linfeng Peng Cong Liao Chaochao Wei Zhongkai Wu Shijie Cheng Jia Xie State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China School of Materials Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China

Solid-state batteries with high energy density and safety are promising next-generation battery ***,lithium oxide and lithium sulfide electrolytes suffer low ionic conductivity and poor electrochemical stability,*** halide solid electrolyte shows high conductivity and good compatibility with the pristine high-voltage cathode but limited applications due to the high price of rare ***-based lithium halides with low cost and high stability possess great ***,a small amount of In^(3+)is introduced in Li_(2)ZrCl_(6) to synthesize Li_(2.25)Zr_(0.75)In_(0.25)Cl_(6) electrolytes with a high room temperature Li-ion conductivity of 1.08 mS/***-state batteries using Li_(2.25)Zr_(0.75)In_(0.25)Cl_(6)/Li_(5.5)PS_(4.5)Cl_(1.5) bilayer solid electrolytes combined with Li-In anode and pristine LiNi_(0.7)Mn_(0.2)Co_(0.1)O_(2) cathode deliver high initial discharge capacities under different cut-off *** work provides an effective strategy for enhancing the conductivity of Li2ZrCl6 electrolytes,promoting their applications in solid-state batteries.

关键词： Solid electrolyte Li_(2)ZrCl_(6) Li-ion conductivity In-doping Solid-state battery

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High Energy Density Li-ion Battery by Ultra-thick Dry Coating Cathode 5

High Energy Density Li-ion Battery by Ultra-thick Dry Coatin...

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5th International Conference on Power engineering, ICPE 2024

作者： Wang, Fengqian Zhong, Jun Du, Jinqiao Tian, Jie Tang, Shun Cao, Yuan-Cheng Huazhong University of Science and Technology School of Materials Science and Engineering Wuhan China Shenzhen Power Supply Co. Ltd China Southern Power Grid Shenzhen China Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Engineering and Echnology Wuhan China

ISBN: (纸本)9798331531140

In the pursuit of a sustainable future, lithium-ion battery is an indispensable energy storage device in grid-scale energy storage systems. However, the prevalent cathode electrode manufacturing processes encounter obstacles in terms of their environmental harmfulness and costliness, primarily attributed to the toxic solvent desiccation and reclamation stages. Moreover, the reliance on lithium-ion batteries particularly underscores the necessity for augmenting energy density, both in terms of volume and weight, with the cathode as the pivotal factor. Dry electrode fabrication emerges as an economical approach to attain heightened material loadings. Herein, we utilize binder fibrillation method to prepare 5 kinds of thickness cathode, the research shows that the dry electrode exhibits a capacity retention of 51.7%, surpassing the 44.3% retention of the traditional wet-based electrode at a loading of roughly 30 mg c m-2(4 mAh / cm2) and is also capable of performing at ultra-high loadings up to 100 mg cm -2 (20 mAh / cm2). This exceptional cycling endurance can be attributed to a robust, interconnected binder fiber by air mill and enhanced mechanical attributes. © 2024 IEEE.

关键词： Binders

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A Coordinated Control Strategy for PV-BESS Combined System and Optimal Configuration of Energy Storage System 5th

A Coordinated Control Strategy for PV-BESS Combined System a...

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5th International Conference on Energy Storage and Intelligent Vehicles, ICEIV 2022

作者： Jin, Chu Yang, Yan Zuo, Zhengmin Luo, Shuxin Wen, Jinyu Grid Planning & Research Center of Guangdong Power Grid Corporation Guangzhou510080 China State Key Laboratory of Advanced Electromagnetic Engineering and Technology College of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan430074 China

ISBN: (纸本)9789819910267

With the increase of photovoltaic (PV) power penetration level in the system, the requirements for PV integration is becoming stricter to guarantee the secure and stable operation of the grid. PV stations will be possibly required to perform like a synchronous generator which could participate in frequency regulation, reactive power support as well as provide inertia apart from ramp rate control and the energy storage system is a promising solution. A coordinated control strategy for Photovoltaic-Battery Energy Storage System (PV-BESS) based on virtual synchronous generator (VSG) and reactive current injection is proposed in this paper. The PV station is able to provide virtual inertia, deal with energy exchange between PV-BESS system and conventional power grid as well as response to the system frequency change, thus improving the stability of the power system effectively. Moreover, the influences of control parameters on system performance are studied and the optimal configuration method of BESS is illustrated by using sensitivity analysis, providing reference for BESS configuration in the system. © 2023, Beijing Paike Culture Commu. Co., Ltd.

关键词： Energy storage

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Enhanced Dynamic Phase Stability and Suppressed Mn Dissolution in Low-Tortuosity Spinel LMO Electrode

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Energy Material Advances 2022年第1期2022卷 24-32页

作者： Renjie He Sheng Lei Mengchuang Liu Mingsheng Qin Wei Zhong Shijie Cheng Jia Xie State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074P.R.China State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China School of Chemistry and Chemical Engineering Huazhong University of Science and TechnologyWuhan 430074China

Microspinel LiMn_(2)O_(4)(LMO)is a widely used cathode material in power lithium-ion ***,inevitable Mn dissolution and dynamic phase instability will cause the degradation of microspinel LMO during ***,a low-tortuosity LMO(LMO-LT)electrode is fabricated by an ice-templating method,which exhibits enhanced dynamic phase stability,alleviated Mn dissolution,and rare particle microcracks during *** is shown that the low-tortuosity electrode enables fast lithium-ion diffusion and thus small concentration polarization,leading to uniform electrochemical reaction within microregions of the LMO-LT ***,the fast lithium-ion transport kinetics and even mesoscopic scale reactions of the LMO-LT electrode effectively alleviate irreversible phase transition and Mn dissolution as well as suppress crack generation in LMO *** a result,the full cell[negative-to-positive capacity ratio(N/P)=1.1]with thick LMO-LT cathode(13 mg cm^(−2))and Li_(4)Ti_(5)O_(12) anode sustains 80.0%capacity over 200 *** LMO-LT electrode further delivers 78.9%capacity of that at 0.1 C at the high rate of 5 *** work provides an important strategy to enhance dynamic phase stability and suppress Mn dissolution at the mesoscopic scale,promoting the development of high-performance LMO electrodes.

关键词： electrode lithium kinetics

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A critical survey of technologies of large offshore wind farm integration: summary, advances, and perspectives

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Protection and Control of Modern Power Systems 2022年第1期7卷 233-264页

作者： Bo Yang Bingqiang Liu Hongyu Zhou Jingbo Wang Wei Yao Shaocong Wu Hongchun Shu Yaxing Ren Faculty of Electric Power Engineering Kunming University of Science and TechnologyKunming 650500China State Key Laboratory of Advanced Electromagnetic Engineering and Technology (Huazhong University of Science and Technology)Wuhan 430074Hubei ProvinceChina Warwick Manufacturing Group University of WarwickCoventry CV47ALUK

Offshore wind farms(OWFs)have received widespread attention for their abundant unexploited wind energy poten-tial and convenient locations *** are rapidly developing towards having large capacity and being located further away from *** is thus necessary to explore effective power transmission technologies to connect large OWFs to onshore *** present,three types of power transmission technologies have been proposed for large OWF *** are:high voltage alternating current(HVAC)transmission,high voltage direct current(HVDC)transmission,and low-frequency alternating current(LFAC)or fractional frequency alternating current *** work undertakes a comprehensive review of grid connection technologies for large OWF *** with previous reviews,a more exhaustive summary is provided to elaborate HVAC,LFAC,and five HVDC topologies,consisting of line-commutated converter HVDC,voltage source converter HVDC,hybrid-HVDC,diode rectifier-based HVDC,and all DC transmission *** fault ride-through technologies of the grid connection schemes are also presented in detail to provide research references and guidelines for *** addition,a comprehensive evalu-ation of the seven grid connection technologies for large OWFs is proposed based on eight specific ***,eight conclusions and six perspectives are outlined for future research in integrating large OWFs.

关键词： Offshore wind farm HVAC HVDC LFAC Fault ride-through

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An ISGW Filtering Antenna with Spurious Modes and Surface Wave Suppression for Millimeter Wave Communications

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China Communications 2023年第11期20卷 1-12页

作者： Lihui Wang Dongya Shen Qiuhua Lin Zhiyong Luo Wenjian Wang Jianpei Chen Zhao Gao Wei Zhang School of Electronics and Communication Engineering Sun Yat-sen UniversityShenzhen 518107China School of Information Science and Engineering Yunnan UniversityKunming 650091China Kuang-Chi Institute of Advanced Technology&State Key Laboratory of Meta-RF Electromagnetic Modulation Technology ShenzhenChina School of Electrics and Information Engineering Yunnan Minzu UniversityKunmingChina Institute of Telecommunication and Navigation Satellites China Academy of Space TechnologyBeijing 100094

In this paper,an integrated substrate gap waveguide(ISGW)filtering antenna is proposed at millimeter wave band,whose surface wave and spurious modes are simultaneously suppressed.A secondorder filtering response is obtained through a coupling feeding scheme using one uniform impedance resonator(UIR)and two stepped-impedance resonators(SIRs).To increase the stopband width of the antenna,the spurious modes are suppressed by selecting the appropriate sizes of the ISGW unit ***,the ISGW is implemented to improve the radiation performance of the antenna by alleviating the propagation of surface *** an equivalent circuit is investigated to reveal the working principle of *** demonstrate this methodology,an ISGW filtering antenna operating at a center frequency of 25 GHz is designed,fabricated,and *** results show that the antenna achieves a stopband width of 1.6f0(center frequency),an out-of-band suppression level of 21 dB,and a peak realized gain of 8.5 dBi.

关键词： filtering antenna integrated substrate gap waveguide millimeter wave communications spurious modes suppression surface wave suppression

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