摘要
Na-Se电池因其较高的理论容量,被认为具有较高的研究价值.但是由于其在充放电过程中的仍存在大倍率性能弱,充放电容量低的问题.所以需要设计新的电池结构材料以解决上述问题.本文通过一步热解法利用过渡金属镍原位催化生长碳纳米管,用Ni/CTs修饰聚丙烯隔膜用于Na-Se电池中以改善其电化学性能.结果表明,使用Ni/CTs修饰的隔膜在Na-Se电池中表现出良好的循环和倍率性能.在0.2 C电流密度下循环100圈后仍有354 mAh g^(-1)的比容量,在20 C的大电流密度下仍具有213 mAh g^(-1)的比容量,并且回到1 C电流密度下仍有283.7 mAh g^(-1)的比容量.
Na-Se battery is considered to have high research value because of its high theoretical capacity.However,there is still problems of weak large rate performance and low capacity of charge and discharge.It is necessary to develop materials that could resolve the above problems.In this research,nickel was used to catalyze the in-situ growth of carbon nanotubes by one-step pyrolysis,and the product(Ni/CTs)was used to modify the polypropylene membrane to improve the electrochemical performance of Na-Se battery.As a result,membranes modified with Ni/CTs showed good cycling and rate performance in Na-Se battery,it still has 354 mAh g^(-1) specific capacity after 100 cycles at 0.2 C and 213 mAh g^(-1) specific capacity at 20 C.And it still has a specific capacity of 283.7 mAh g^(-1) at 1 C.
作者
李嘉胤
胡云飞
张金津
钱程
郑裕欣
曹丽云
刘一军
黄剑锋
LI Jia-yin;HU Yun-fei;ZHANG Jin-jin;QIAN Cheng;ZHENG Yu-xin;CAO Li-yun;LIU Yi-jun;HUANG Jian-feng(School of Materials Science and Engineering, Xi′an Key Laboratory of Green Manufacture of Ceramic Materials, Shaanxi University of Science & Technology, Xi′an 710021, China;Guangdong Monalisa Group Co., Ltd., Foshan 528211, China)
出处
《陕西科技大学学报》
北大核心
2022年第3期130-135,共6页
Journal of Shaanxi University of Science & Technology
基金
国家自然科学基金项目(52073166)
广东蒙娜丽莎集团股份有限公司科研项目(GF-YF-JS-2021-009)。
作者简介
李嘉胤(1987-),男,陕西咸阳人,副教授,博士,研究方向:纳米能源材料;通讯作者:黄剑锋(1970-),男,重庆人,教授,博士生导师,研究方向:纳米能源材料,huangjf@sust.edu.cn。
