阳极
煅烧
材料科学
假电容
锂(药物)
化学工程
碳纤维
纳米颗粒
锰
无机化学
电化学
纳米技术
电极
复合数
化学
复合材料
催化作用
超级电容器
冶金
有机化学
物理化学
医学
内分泌学
工程类
作者
Xiaohong Tan,Jiawei Liu,Qianhong Huang,Yangjun Wu,Xiaoming Lin,Akif Zeb,Zhongzhi Yuan,Xuan Xu,Yifan Luo
标识
DOI:10.1016/j.jallcom.2021.162569
摘要
Transition metal fluorides have attracted widespread interest in recent years on account of their high energy density. However, their low conductivity and poor cyclability limit their development in next-generation power batteries. Herein, two methods (vapor-solid method and traditional calcination fluorination method) were used to successfully synthesize the manganese fluoride nanoparticle anode material attached on in-situ multi-vacancy carbon. Experimental data shows that vapor-solid method can provide more additional active sites, better electrical conductivity and more space to relieve volume expansion when compared to calcined fluorination. Pseudocapacitance analysis show their exceeding theoretical capacity phenomenon. By comparison, it is found that the spherical hollow manganese fluoride nanoparticles embedded carbon anode material obtained by the vapor-solid method exhibits excellent long cycle performance (450 loops at 1 A g−1, and a capacity of up to 864 mAh g−1, at a current density of 2 A g−1 1700 cycles with a capacity of up to 519 mAh g−1).
科研通智能强力驱动
Strongly Powered by AbleSci AI