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Different surface modification methods and coating materials of zinc metal anode

Journal of energy Chemistry 2022年第3期31卷 397-412,I0011页

作者： Feng Tao Yong Liu Xinyuan Ren Jing Wang Yazhou Zhou Yingjie Miao Fengzhang Ren Shizhong Wei Jianmin Ma Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology Henan Key Laboratory of Non-Ferrous Materials Science&Processing TechnologySchool of Materials Science and EngineeringHenan University of Science and TechnologyLuoyang 471023HenanChina National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials Henan Key Laboratory of High-Temperature Structural and Functional MaterialsHenan University of Science and TechnologyLuoyang 471003HenanChina School of Art&Design Henan University of Science and TechnologyLuoyang 471023HenanChina School of Physics and Electronics Hunan UniversityChangsha 410082HunanChina School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina

Rechargeable aqueous Zn-ion batteries(AZIBs)are one of the most promising energy storage devices for large-scale energy storage owing to their high specific capacity,eco-friendliness,low cost and high ***,zinc metal anodes suffer from severe dendrite growth and side reactions,resulting in the inferior electrochemical performance of *** address these problems,surface modification of zinc metal anodes is a facile and effective method to regulate the interaction between the zinc anode and an *** this review,the current challenges and strategies for zinc metal anodes are ***,recent advances in surface modification strategies to improve their electrochemical performance are concluded and ***,challenges and prospects for future development of zinc metal anodes are *** hope this review will be useful for designing and fabricating highperformance AZIBs and boosting their practical applications.

关键词： Zn-ion batteries Zinc metal anode Surface modification Solvent casting method Wet chemistry method

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Structure,far-infrared spectroscopy,microwave dielectric properties,and improved low-temperature sintering characteristics of tri-rutile Mg_(0.5)Ti_(0.5)TaO_(4) ceramics

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Journal of Advanced Ceramics 2023年第2期12卷 296-308页

作者： Hongyu YANG Liang CHAI Guangchao LIANG Mengjiang XING Zixuan FANG Xing ZHANG Tianying QIN Enzhu LI Academy of Advanced Interdisciplinary Research Xidian UniversityXi’an 710071China National Engineering Research Center of Electromagnetic Radiation Control Materials University of Electronic Science and Technology of ChinaChengdu 610054China Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education University of Electronic Science and Technology of ChinaChengdu 610054China Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhou 313001China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China Sichuan Province Key Laboratory of Information Materials and Devices Application Chengdu University of Information TechnologyChengdu 610225China

In this study,tri-rutile type Mg_(0.5)Ti_(0.5)TaO_(4) ceramics were synthesized,where the structure–property relationship,especially the structural configuration and intrinsic dielectric origin of Mg_(0.5)Ti_(0.5)TaO_(4) ceramics,and the low-firing characteristics were *** is found that the tri-rutile structural type is unambiguously identified through the Rietveld refinement analysis,the selected area electron diffraction(SAED),and the high-resolution transmission electron microscopy(HRTEM)along the[110]zone *** the increase in sintering temperature,the densification and uniformity of crystal growth play important roles in regulating the microwave dielectric properties of Mg_(0.5)Ti_(0.5)TaO_(4) ***,theoretical dielectric properties calculated by the far-infrared reflective spectra approached the experimental values,indicating the importance of structural features to dielectric ***,a glass additive with high matching relevance with ceramics has been developed to decrease the high sintering temperature of Mg_(0.5)Ti_(0.5)TaO_(4) ceramics,where 2–4 wt%Li_(2)O–MgO–ZnO–B_(2)O_(3)–SiO_(2)(LMZBS)glass frit was adopted to reduce the suitable temperature from 1275 to 1050℃ without significantly deteriorating the microwave dielectric ***,Mg_(0.5)Ti_(0.5)TaO_(4) ceramics containing 2 wt% glass addition sintered at 1050℃for 4 h possess excellent microwave dielectric properties:dielectric constant(ε_(r))=44.3,quality factor multiplied by resonant frequency(Q×f)=23,820 GHz(f=6.2 GHz),and the temperature coefficient of resonant frequency(τ_(f))=123.2 ppm/℃.

关键词： Mg0.5Ti0.5TaO4 ceramics crystal structure low-temperature sintering

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Fire Status Sensing of Oil-immersed Power Transformers Based on TOPSIS Method and Combination Weighting of Game Theory

Fire Status Sensing of Oil-immersed Power Transformers Based...

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IEEE International Conference on energy Internet (ICEI)

作者： Xinyu Pi Tao Feng Xunjian Xu Yi Ouyang Yahui Wang Xingren Su State Key Laboratory of Disaster Prevention and Reduction for Power Grid Transmission and Distribution Equipment State Grid Hunan Electric Power Company Disaster Prevention and Reduction Center Changsha China College of Automation and Electronic Engineering Xiangtan University & Hunan Engineering Research Center of Multi-Energy Cooperative Control Technology Xiangtan China

ISBN: (数字)9798331523558

ISBN: (纸本)9798331523565

The oil-immersed power transformer plays a crucial role in ensuring the safe and stable operation of the entire power system, highlighting the significance of enhancing the precision of its fire detection Aiming at the problems of difficulty in status sensing and inaccurate sensing results of traditional oil-immersed transformer status sensing models, a fire status sensing model for oil-immersed power transformers based on TOPSIS (Technique for order preference by similarity to an ideal solution) method and combination weighting of game theory is proposed in this paper. The model combines subjective weighting with objective weighting, while using game theory to determine the subjective and objective weight coefficients, eliminating human influence, and the TOPSIS method determines the final status sensing results. The test data of oil-imm supplied by a power company serves as the verification and analysis sample. This paper focuses on the oil-immersed power transformer, a key equipment in the power system, and carries out research on fire state sensing, which promotes the progress of state sensing technology and is of great significance to ensure the safe and stable operation of the power system and the normal life of residents, and providing early warning of potential fires, which holds significant practical implications in engineering.

关键词： energy Internet Companies Oil insulation Reliability theory Sensors Power transformers Game theory Monitoring

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A non-intrusive load identification method considering unknown loads

A non-intrusive load identification method considering unkno...

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Cyber-energy Systems and Intelligent energy (ICCSIE), International Conference on

作者： Jun Xiao Mao Tan Yaqing Gong Chengchen Liao School of Automation and Electronic Information Xiangtan University Xiangtan China Hunan National Center for Applied Mathematics Xiangtan University Xiangtan China School of Automation and Electronic Information Xiangtan University Xiangtan Country Hunan Engineering Research Center of Multi-energy Cooperative Control Technology Xiangtan University Xiangtan China

The current non-intrusive recognition model has complex input features and model structure. In addition, it usually can only identify known loads in training dataset and cannot identify unknown loads that are outside the training dataset, which makes it difficult to be applied to dynamic user-side monitoring environment. To this end, we propose a non-intrusive load identification method considering unknown loads—One Class Load Identification Network(OC-LIN), which can accurately identify both known and unknown loads. The proposed method consists of two main parts: (1) a load identification network that accurately identify loads using fusion V-I trajectory feature and odd harmonic amplitude feature; (2) an one class method in deep support vector data description (DSVDD) to identify unknown loads. Through the validation of the PLAID 2018 dataset, the proposed method not only identifies the unknown loads efficiently, but also improves the identification precision among the known loads.

关键词：

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Vulnerability analysis of cyber-physical system based on improved structural entropy 4

Vulnerability analysis of cyber-physical system based on imp...

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4th IEEE Conference on energy Internet and energy System Integration, EI2 2020

作者： Li, Long Li, Zhenwen Liu, Ying Xiao, Zhenfeng Cai, Ye Liu, Fang Hunan Electric Power Company Dispatch Control Center State Grid Corporation Changsha China Changsha University of Science and Technology School of Electrical and Information Engineering Changsha China Hunan Electric Power Company Limited Economic Technical Research Institute Hunan Key Laboratory of Energy Internet Supply-demand and Operation Changsha China

ISBN: (纸本)9781728196060

With the continuous integration of the power grid and the information network, the vulnerability analysis of cyber-physical system considering the interaction between networks become more important. Based on the complex network theory, a topology model of power cyber-physical network is established, and improved structural entropy is proposed, which considering node differences, edge differences, and node dependency differences. Taking the hunan Electric Power Cyber-Physical System as an example, the simulation results show that the improved structural entropy can identify important nodes in the power grid. the dependent network is more vulnerable than a single network, nodes with high-degree and high-betweenness play a key role in maintaining the operation of the system, and the robustness of system will also be reduced when a few nodes with low-degree and low-betweenness fail. © 2020 IEEE.

关键词： Cyber Physical System

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Systematic control technologies for gaseous pollutants from non-ferrous metallurgy

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Journal of Environmental Sciences 2023年第1期123卷 65-82页

作者： Hui Liu Fenghua Shen Qingzhu Li Minneng Wen Hongliang Zhang Linhua Jiang Chenghang Zheng Yan Liu Tao Liu Liyuan Chai School of Metallurgy and Environment Central South UniversityChangsha 410083China Chinese National Engineering Research Center for Control&Treatment of Heavy Metal Pollution Changsha 410083China State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China College of Environmental Science and Engineering Tongji UniversityShanghai 200092China State Key Lab of Clean Energy Utilization State Environmental Protection Engineering Center for Coal-Fired Air Pollution ControlZhejiang UniversityHangzhou 310027China Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores of Ministry of Education School of MetallurgyNortheastern UniversityShenyang 110819China School of Resource and Environmental Engineering Wuhan University of Science and TechnologyWuhan 430081China

Air pollutant emissions represent a critical challenge in the green development of the non-ferrous metallurgy *** work studied the emission characteristics,formation mechanisms,phase transformation and separation of typical air pollutants,such as heavy metal particles,mercury,sulfur oxides and fluoride,during non-ferrous smelting.A series of purification technologies,including optimization of the furnace throat and hightemperature discharge,were developed to collaboratively control and recover fine particles from the flue gas of heavy metal smelting processes,including copper,lead and *** improvements have been realized in wet scrubbing technology for removing mercury,fluoride and SO_(2)from flue ***-liquid sulfidation technology by applying H_(2)S was invented to recycle the acid scrubbing wastewater more efficiently and in an eco-friendly *** on digital technology,a source reduction method was designed for sulfur and fluoride control during the whole aluminum electrolysis *** desulfurization technologies were developed for catalytic reduction of the sulfur content in petroleum coke at low temperature and catalytic reduction of SO_(2)to elemental *** work has established the technology for coupling multi-pollutant control and resource recovery from the flue gas from non-ferrous metallurgy,which provides the scientific theoretical basis and application technology for the treatment of air pollutants in the non-ferrous metallurgy industry.

关键词： Non-ferrous smelting Gaseous pollutant Flue gas purification Acid wastewater Heavy metal

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Enhanced selective recovery of powder carrier-supported biofilms for enrichment of denitrifying functional bacteria

Water Research X

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Water research X 2025年 28卷

作者： Wang, Chengxian Lu, Bin Wu, Boran Chen, Jin Wu, Zhigen Han, Hongbo Dai, Xiaohu Chai, Xiaoli Hu, Dian Shandong Engineering Research Center for Biogas Qingdao New Energy Shandong Laboratory Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao266101 China State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and Engineering Tongji University 1239 Siping Road Shanghai 200092 China Hunan Sanyou Environmental Protection Co. Ltd. Changsha410205 China School of International Liberal Studies Waseda University Tokyo 1690051 Japan

An innovative integrated fixed-film activated sludge (IFAS) system using high-concentration powder carriers was developed to promote microbial growth and optimize community distribution, achieving high efficiency denitrification in municipal wastewater. A critical challenge remains the efficient recovery of carrier biofilm from activated sludge. In this study, multi-layer density gradient centrifugation was employed to characterize the biochemical characteristics and microbial distribution patterns of sludge. Under the optimal cyclone inflow velocity of 3.5 ± 0.5 m/s, the aged cell can efficiently be detached from biofilm sludge via the cyclone separation unit, increased the proportion of live cells by 20 %. The cyclone separation unit can also successfully separate suspended and biofilm sludge, enriching denitrifying bacteria in the underflow sludge and phosphate accumulating organisms (PAOs) in overflow sludge. Compared to overflow sludge, underflow sludge (biofilm) exhibited a 33 % increase in particle size and a 0.51-fold increase in denitrification rate constants, leading to improvements of nitrogen and phosphorus removal efficiencies exceeding 73 %. This study proposes a novel strategy for precise regulation of dual sludge ages, addressing the contradiction between the long generation cycles of denitrifying microorganisms and the short generation cycles of PAOs. These findings provide valuable insights for the targeted enrichment of denitrifying microorganisms within carrier biofilm, enhancing denitrification and phosphorus removal during the expansion and upgrading of municipal wastewater treatment plants. © 2025

关键词： Biofilms

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Low-firing and temperature stability regulation of tri-rutile MgTa_(2)O_(6)microwave dielectric ceramics

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International Journal of Minerals,Metallurgy and Materials 2024年第8期31卷 1935-1943页

作者： Chengzhi Xu Hongyu Yang Hongcheng Yang Linzhuang Xing Yuan Wang Zhimin Li Enzhu Li Guorui Zhao School of Advanced Materials and Nanotechnology Xidian UniversityXi’an 710071China Academy of Advanced Interdisciplinary Research Xidian UniversityXi’an 710071China School of New Energy and Materials Southwest Petroleum UniversityChengdu 610500China National Engineering Research Center of Electromagnetic Radiation Control Materials and Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education University of Electronic Science and Technology of ChinaChengdu 610054China Songshan Lake Materials Laboratory A1 Building University Innovation ParkDongguan 523808China

A glass frit containing Li_(2)O-MgO-ZnO-B_(2)O_(3)-SiO_(2)component was used to explore the low-temperature sintering behaviors and microwave dielectric characteristics of tri-rutile MgTa_(2)O_(6)ceramics in this *** good low-firing effects are presented due to the high matching relevance between Li_(2)O-MgO-ZnO-B_(2)O_(3)-SiO_(2)glass and MgTa_(2)O_(6)*** pure tri-rutile MgTa_(2)O_(6)structure remains unchanged,and high sintering compactness can also be achieved at 1150℃.We found that the Li_(2)O-MgO-ZnO-B_(2)O_(3)-SiO_(2)glass not only greatly improves the low-temperature sintering characteristics of MgTa_(2)O_(6)ceramics but also maintains a high(quality factor(Q)×resonance frequency(f))value while still improving the temperature ***,great microwave dielectric characteristics when added with 2wt%Li_(2)O-MgO-ZnO-B_(2)O_(3)-SiO_(2)glass can be achieved at 1150℃:dielectric constant,ε_(r)=26.1;Q×f=34267 GHz;temperature coefficient of resonance frequency,τ_(f)=-8.7×10^(-6)/℃.

关键词： MgTa_(2)O_(6) ceramic microwave dielectric characteristics glass

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Optimization of SRM Direct Instantaneous Torque control Strategy based on Improved Firefly Algorithm

Optimization of SRM Direct Instantaneous Torque Control Stra...

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IEEE Conference on energy Internet and energy System Integration (EI2)

作者： Jiangyong Liu Lixiong Wang Lingzhi Yi Guanghui Zhu Xinjian Yin College of Information Engineering Xiangtan University Hunan Province Engineering Research Center for Multi-Energy Collaborative Control Technology Xiangtan China XEMC Wind Power Co. Ltd Xiangtan China

ISBN: (数字)9781728131375

ISBN: (纸本)9781728131382

The direct instantaneous torque control has weak anti-interference ability and insufficient torque ripple optimization. In this paper, a method based on improved firefly algorithm to optimize SRM direct instantaneous torque control is proposed. On the basic of proportional integral control, the improved firefly algorithm is used to optimize the parameters which will help to find the optimal simulation parameters automatically. The method proposed in this paper has reduced torque ripple and improved dynamic response of the system. The experimental simulation verifies its effectiveness.

关键词： Reluctance motors Torque Optimization Torque control Torque measurement Inductance

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A nanoscale observation to explain the discrepancy of electron exchange capacities between biochar containing comparable surface redox-active moieties

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Biochar 2022年第1期4卷 503-517页

作者： Shasha Li Liming Shao Hua Zhang Xuemin Lu Fan Lü Pinjing He State Key Laboratory of Pollution Control and Resource Reuse Tongji UniversityShanghai 200092People’s Republic of China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092People’s Republic of China Institute of Waste Treatment and Reclamation Tongji UniversityShanghai 200092People’s Republic of China Shanghai Multi-Source Solid Waste Collaborative Treatment and Energy Engineering Technology Research Center ShanghaiPeople’s Republic of China

Biochar,possessing electron exchange capacities(EEC),is generally involved in environmental redox reactions due to the presence of redox-active moieties(RAMs).The phenomenon that chars containing comparable RAMs possess differential EEC revealed that the accessibility of RAMs is important to the redox ***,many studies have focused on the type of RAMs,whereas the distribution has been insufficiently ***,we achieved nanoscale observation of electroactive moieties on the surface of six chars using a conductive atomic force *** the two specific kinds of chars with submicron particles and opposite current distributions,the submicron particles took up only 1-4‰wt of biochar accounting for approximately 30-50%of electron-donating capacity(EDC),and electron-accepting capacity(EAC)became 87%and 1.40 times as before after removing submicron particles,***,the combined impact of RAMs and surface topography(that uneven distribution of RAMs resulted in outstanding EEC by enhancing accessibility)was ***,direct evidence of the link between char structure and EEC(that condensed aromatic structures were indispensable to EAC while both heteroatoms and amorphous aromatics contributed to EDC)was *** findings can aid in understanding the functions of biochar in biotic and abiotic redox processes.

关键词： Biochar Pyrogenic chars Redox property Electron exchange capacity C-AFM

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