摘要
针对采用涂敷法制备电极材料时,运行一段时间后会出现电极的比容量性能下降较快的问题,利用热注入的方法,合成电化学性能优异、尺寸约为100 nm的Ni_(3)S_(4)纳米棒.研究表明:制备小尺寸的纳米材料作为超级电容器的电极材料,有利于反应过程中电解液的快速渗透,能够进一步提高其电化学性能;制备的Ni_(3)S_(4)纳米棒正极材料可以在0~0.55 V的电压区间内稳定工作;在电流密度为1 A·g^(-1)时,其比容量可达1097 F·g^(-1),在电流密度为20 A·g^(-1)时比容量仍可保持在740 F·g^(-1)左右;在电流密度为10 A·g^(-1)时,对Ni_(3)S_(4)纳米棒正极材料进行10000次循环测试,正极材料的保持率可达到91%.
To solve the problem that the specific capacitance of the electrode was decreased rapidly after running for a period of time,the Ni_(3)S_(4)nanorods with excellent electrochemical performance and with size of about 100 nm were synthesized by thermal injection method.The results show that the preparation of small nanomaterials as electrode material of supercapacitor is conducive to the rapid infiltration of electrolyte during the reaction process,and the electrochemical performance can be further improved.The prepared Ni_(3)S_(4) nanorods can work stably in the voltage range from 0 to 0.55 V.When the current density is 1 A·g^(-1),the specific capacity reaches 1097 F·g^(-1).When the current density is 20 A·g^(-1),the specific capacity still remains about 740 F·g^(-1).The retention rate of the material can reach 91%when it is tested for 10000 cycles at 10 A·g^(-1).
作者
马骏
吉内德
苏冬云
褚岩
孟祥康
MA Jun;SYED Junaid Ali;SU Dongyun;CHU Yan;MENG Xiangkang(School of Aviation and Transportation,Jiangsu College of Engineering and Technology,Nantong,Jiangsu 226006,China;Nantong Institute of Materials Engineering Technology,Nanjing University,Nantong,Jiangsu 226000,China;Department of Basic Sciences,Mathematics and Humanities,Dawood University of Engineering and Technology,Karachi 74800,Pakistan;College of Mechanical Engineering,Nantong Vocational University,Nantong,Jiangsu 226007,China;College of Engineering and Applied Sciences,Nanjing University,Nanjing,Jiangsu 210093,China)
出处
《江苏大学学报（自然科学版）》
CAS
北大核心
2022年第3期341-345,共5页
Journal of Jiangsu University：Natural Science Edition
基金
国家自然科学基金资助项目(21950410523)
中国博士后科学基金资助项目(2019M653175)
国际青年科学家研究奖·国际(地区)合作与交流项目(2020)
江苏省自然科学基金资助面上项目(BK20161289)
江苏省“六大人才高峰”培养对象项目(2018-XCL-206)
江苏省“333工程”高层次人才项目(2022)
江苏省“青蓝工程”中青年学术带头人项目(2017)
江苏省产学研合作项目(BY2021311)
南通市“226工程”高层次人才项目([2016]Ⅲ-439)
南通市科技计划项目(MS12020063,MSZ21010)
2021年江苏省交通运输职业教育研究项目重点课题(2021-B09)
江苏工程职业技术学院重大项目(GYKY/2020/1)
江苏省高等教育教改研究立项课题(2021JSJG036)。
关键词
正极材料
硫化镍
热注入法
纳米棒
循环性能
超级电容器
cathode material
nickel sulfide
heat injection method
nanorods
cycle performance
supercapacitor
