检索结果-南通市图书馆

Asymmetric Electrolytes Design for Aqueous Multivalent Metal Ion Batteries

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第3期16卷 227-253页

作者： Xiaochen Yang Xinyu Wang Yue Xiang longtao ma Wei Huang Frontiers Science Center for Flexible Electronics Institute of Flexible ElectronicsNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China School of materials Science and Engineering Guangdong Provincial Key Laboratory of Advanced Energy Storage MaterialsSouth China University of TechnologyGuangzhou 510641People’s Republic of China

With the rapid development of portable electronics and electric road vehicles,high-energy-density batteries have been becoming front-burner ***,homogeneous electrolyte cannot simultaneously meet diametrically opposed demands of high-potential cathode and low-potential anode,which are essential for high-voltage ***,homogeneous electrolyte is difficult to achieve bi-or multi-functions to meet different requirements of *** comparison,the asymmetric electrolyte with bi-or multi-layer disparate components can satisfy distinct requirements by playing different roles of each electrolyte layer and meanwhile compensates weakness of individual ***,the asymmetric electrolyte can not only suppress by-product sedimentation and continuous electrolyte decomposition at the anode while preserving active substances at the cathode for high-voltage batteries with long cyclic *** this review,we comprehensively divide asymmetric electrolytes into three categories:decoupled liquid-state electrolytes,bi-phase solid/liquid electrolytes and decoupled asymmetric solid-state *** design principles,reaction mechanism and mutual compatibility are also studied,***,we provide a comprehensive vision for the simplification of structure to reduce costs and increase device energy density,and the optimization of solvation structure at anolyte/catholyte interface to realize fast ion transport kinetics.

关键词： Asymmetric electrolyte Aqueous multivalent metal ion batteries Electrochemical stability windows Electrolyte interface

Aqueous Zinc Batteries with Ultra‑Fast Redox Kinetics and High Iodine Utilization Enabled by Iron Single Atom Catalysts

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2023年第8期15卷 368-380页

作者： Xueya Yang Huiqing Fan Fulong Hu Shengmei Chen Kang Yan longtao ma State Key Laboratory of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China Frontiers Science Center for Flexible Electronics Institute of Flexible ElectronicsNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China Department of materials Science and Engineering City University of Hong Kong83 Tat Chee AvenueKowloon 999077Hong KongPeople’s Republic of China

Rechargeable aqueous zinc iodine(ZnǀǀI_(2))batteries have been promising energy storage technologies due to low-cost position and constitutional safety of zinc anode,iodine cathode and aqueous ***,on one hand,the low-fraction utilization of electrochemically inert host causes severe shuttle of soluble polyiodides,deficient iodine utilization and sluggish reaction *** the other hand,the usage of high mass polar electrocatalysts occupies mass and volume of electrode materials and sacrifices device-level energy ***,we propose a“confinement-catalysis”host composed of Fe single atom catalyst embedding inside ordered mesoporous carbon host,which can effectively confine and catalytically convert I_(2)/I^(−)couple and polyiodide ***,the cathode enables the high capacity of 188.2 mah g^(−1)at 0.3 A g^(−1),excellent rate capability with a capacity of 139.6 mah g^(−1)delivered at high current density of 15 A g^(−1)and ultra-long cyclic stability over 50,000 cycles with 80.5%initial capacity retained under high iodine loading of 76.72 wt%.Furthermore,the electrocatalytic host can also accelerate the I^(+)↔I_(2)*** greatly improved electrochemical performance originates from the modulation of physicochemical confinement and the decrease of energy barrier for reversible I−/I_(2)and I_(2)/I^(+)couples,and polyiodide intermediates conversions.

关键词： Aqueous zinc batteries Iodine reduction reaction Fe single atom catalysts

Organic materials-based cathode for zinc ion battery

在线全文

学校读者我要写书评

暂无评论

Smartmat 2022年第4期3卷 565-581页

作者： Huilin Cui longtao ma Zhaodong Huang Ze Chen Chunyi Zhi Department of materials Science and Engineering City University of Hong KongKowloonHong KongChina Frontiers Science Center for Flexible Electronics Institute of Flexible ElectronicsNorthwestern Polytechnical UniversityXi'anChina Hong Kong Center for Cerebro-Cardiovascular Health Engineering(COCHE) ShatinNTHong KongChina Hong Kong Institute for Clean Energy City University of Hong KongKowloonHong KongChina

The quest for advanced energy storage devices with cheaper,safer,more resource-abundant storage has triggered intense research into zinc ion batteries(ZIBs).Among them,organic materials as cathode materials for ZIBs have attracted great interest due to their flexible structure designability,high theoretical capacity,environmental friendliness,and *** numerous organic electrode materials have been studied and different redox mechanisms have been proposed in the past decade,their electrochemical performance still needs further improvement,and the mechanisms require further *** paper provides a systematical overview of three types of organic materials(bipolar-type conductive polymer,n-type conjugated carbonyl compounds,and p-type material)on the energy storage mechanisms and distinct *** then focus on discussing the design strategies to improve electrochemical ***,the challenges and future research directions are discussed to provide a foundation for further developing organic-based ZIBs.

关键词： aqueous electrolyte batteries organic cathode materials zinc ion batteries

A smart safe rechargeable zinc ion battery based on sol-gel transition electrolytes

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science Bulletin 2018年第16期63卷 1077-1086页

作者： Funian Mo Hongfei Li Zengxia Pei Guojin Liang longtao ma Qi Yang Donghong Wang Yan Huang Chunyi Zhi Department of materials Science and Engineering City University of Hong Kong Hong Kong China State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology Harbin 150001 China

Thermal runaway has been a long-standing safety issue impeding the development of high-energy- density batteries. Physical safety designs such as employing circuit-breakers and fuses to batteries are limited by small operating voltage windows and no resumption of original working condition when it is cooled down. Here we report a smart thermoresponsive polymer electrolyte that can be incorporated inside batteries to prevent thermal runaway via a fast and reversible sol-gel transition, and successfully combine this smart electrolyte with a rechargeable Zn/^-Mn02 battery system. At high temperature, bat- tery operation is inhibited as a result of the increased internal resistance caused by the gelation of liquid electrolyte. After cooling down, the electrolyte is spontaneously reversed to sol state and the electro- chemical performance of the battery is restored. More importantly, sol-gel transition enables the smart battery to experience different charge-discharge rates under various temperature levels, providing a smart and active strategy to achieve dynamic and reversible self-protection.

关键词： Rechargeable zinc ion battery Sol-gel electrolyte Reversible transition Gelation Thermoresponsive

Recent Progress of MXene-Based Nanomaterials in Flexible Energy Storage and Electronic Devices

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental materials 2018年第4期1卷 183-195页

作者： Qi Yang Yukun Wang Xinliang Li Hongfei Li Zifeng Wang Zijie Tang longtao ma Funian Mo Chunyi Zhi Department of materials Science and Engineering City University of Hong Kong83 Tat Chee AvenueHong KongChina Chengdu Research Institute City University of Hong KongChengdu 610000China

The increasing demands for wearable electronics have stimulated the rapid development of flexible energy storage *** are considered as promising flexible electrodes due to the ultrahigh volumetric specific capacitance... 详细信息

关键词： batteries electronics flexible MXenes supercapacitors

Inducing Fe 3d Electron Delocalization and Spin‑State Transition of FeN_(4) Species Boosts Oxygen Reduction Reaction for Wearable Zinc–Air Battery

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2023年第4期15卷 23-39页

作者： Shengmei Chen Xiongyi Liang Sixia Hu Xinliang Li Guobin Zhang Shuyun Wang longtao ma Chi‑man Lawrence Wu Chunyi Zhi Juan Antonio Zapien Department of materials Science and Engineering City University of Hong KongHong Kong 999077People’s Republic of China Sustech Core Research Facilities Southern University of Science and Technology1088 Xueyuan BlvdShenzhenGuangdong 518055People’s Republic of China Frontiers Science Center for Flexible Electronics Institute of Flexible ElectronicsNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China Tsinghua Shenzhen International Graduate School Tsinghua UniversityShenzhenGuangdong518055People’s Republic of China

Transition metal-nitrogen-carbon materials(M-N-Cs),particularly Fe-N-Cs,have been found to be electroactive for accelerating oxygen reduction reaction(ORR)*** substantial efforts have been devoted to design Fe-N-Cs with increased active species content,surface area,and electronic conductivity,their performance is still far from ***,there is limited research about regulation on the electronic spin states of Fe centers for Fe-N-Cs electrocatalysts to improve their catalytic ***,we introduce Ti_(3)C_(2) MXene with sulfur terminals to regulate the electronic configuration of FeN_(4) species and dramatically enhance catalytic activity toward *** MXene with sulfur terminals induce the spin-state transition of FeN_(4) species and Fe 3d electron delocalization with d band center upshift,enabling the Fe(II)ions to bind oxygen in the end-on adsorption mode favorable to initiate the reduction of oxygen and boosting oxygen-containing groups adsorption on FeN_(4) species and ORR *** resulting FeN_(4)-Ti_(3)C_(2)Sx exhibits comparable catalytic performance to those of commercial *** developed wearable ZABs using FeN_(4)-Ti_(3)C_(2)Sx also exhibit fast kinetics and excellent *** study confirms that regulation of the electronic structure of active species via coupling with their support can be a major contributor to enhance their catalytic activity.

关键词： Fe 3d electron delocalization Spin-state transition Oxygen reduction reaction Wearable zinc-air batteries

基于非参数回归分析的工业负荷异常值识别与修正方法

在线全文

学校读者我要写书评

暂无评论

电力系统自动化 2017年第18期41卷 53-59页

作者：赵天辉王建学马龙涛朱宇超陕西省智能电网重点实验室(西安交通大学电气工程学院) 陕西省西安市710049 国网铜川供电公司陕西省铜川市727000

工业负荷数据记录了用户的用电模式以及电量需求水平等重要信息,但是会因为干扰而导致记录数据中掺杂有异常值。针对上述问题,文中提出了利用非参数回归理论对工业用户负荷异常值展开辨析和更正。首先,考虑负荷数据时序相关特性,采用统... 详细信息

工业负荷数据记录了用户的用电模式以及电量需求水平等重要信息,但是会因为干扰而导致记录数据中掺杂有异常值。针对上述问题,文中提出了利用非参数回归理论对工业用户负荷异常值展开辨析和更正。首先,考虑负荷数据时序相关特性,采用统计模糊矩阵分类法,对工业用户负荷进行用电模式分类,将负荷数据分为基础用电模式数据集和特殊用电模式数据集。然后,利用基础用电模式数据集,考虑各时刻的负荷数值分布情况,通过非参数回归分析方法提取中心负荷向量,进而构造异常数据域,对负荷异常值进行识别。最后,在常规加权均值法的基础上,引入负荷水平映射关系,完成对负荷异常值的修正。算例采用实际工业负荷数据进行测试,结果表明了所提方法的准确性。

关键词：负荷管理模式分类异常数据识别非参数回归分析

在线全文

学校读者我要写书评

暂无评论

塑壳断路器操作机构疲劳寿命仿真研究

电器与能效管理技术 2020年第3期 8-13页

作者：马龙涛戴铭磊国网西安供电公司陕西西安710032 西安交通大学电力设备电气绝缘国家重点实验室陕西西安710049

为了准确地评估塑壳断路器操作机构的疲劳寿命,本文基于刚柔耦合分析、材料的抗疲劳性能理论及疲劳累积损伤理论,主要利用刚体动力学软件ADAMS及疲劳分析软件nCode,建立了塑壳断路器操作机构疲劳寿命仿真模型。通过仿真分析,得到了塑壳... 详细信息

为了准确地评估塑壳断路器操作机构的疲劳寿命,本文基于刚柔耦合分析、材料的抗疲劳性能理论及疲劳累积损伤理论,主要利用刚体动力学软件ADAMS及疲劳分析软件nCode,建立了塑壳断路器操作机构疲劳寿命仿真模型。通过仿真分析,得到了塑壳断路器主要部件的疲劳寿命及薄弱点,完成了主要部件的材料选型,验证了疲劳寿命仿真方法的可行性。

关键词：塑壳断路器操作机构刚柔耦合动态应力疲劳极限疲劳寿命仿真

在线全文

学校读者我要写书评

暂无评论

氧化锌一维纳米棒的低温制备及其气敏性能

郑州大学学报（工学版） 2016年第3期37卷 52-55页

作者：樊慧庆马龙涛黄丽梅西北工业大学凝固技术国家重点实验室陕西西安710072 西北工业大学材料学院陕西西安710072

采用低温水热法合成了氧化锌(Zn O)一维纳米棒,通过X射线衍射(XRD)和扫描电子显微镜(SEM)及高分辨透射电子显微镜(HRTEM)研究了其相结构与形貌,并测试了基于Zn O一维纳米棒所制作的传感器的气敏性能.研究表明,该气体传感器对体积分数为... 详细信息

采用低温水热法合成了氧化锌(Zn O)一维纳米棒,通过X射线衍射(XRD)和扫描电子显微镜(SEM)及高分辨透射电子显微镜(HRTEM)研究了其相结构与形貌,并测试了基于Zn O一维纳米棒所制作的传感器的气敏性能.研究表明,该气体传感器对体积分数为500×10-6的乙醇的检测灵敏度为35.71,对乙醇气体的响应和恢复时间分别约为7 s和9 s,并具有优良气体选择特性,最后,结合电子释放理论解释了其气敏机理.

关键词：氧化锌一维纳米结构低温合成气敏传感器