摘要
采用水热法制备了一种含铝金属有机骨架材料,其在高温下发生炭化得到多孔碳,最后与硫复合制得锂硫电池正极材料.XRD图谱显示在高温炭化时多孔碳样品出现了部分石墨化.N2等温吸附-脱附测试分析显示合成的多孔碳材料含有微孔和介孔结构.对不同载硫量的锂硫电池进行了充放电性能测试,结果显示S质量分数为46.3%的样品在0.01 C倍率下首次放电容量达到1272 mA·h/g;在0.1 C倍率下首次放电容量为934 mA·h/g,循环性能良好.
An aluminum metal-organic framework （ MOF ） was prepared by hydrothermal method. Porous carbon was produced by direct carbonization of MOFs and then was loaded with sulfur. XRD patterns show that the porous carbon is partially graphitized during the high temperature carbonization. N2 sorption isotherms illustrate that the porous carbon contain both microporous and mesoporous structures. Charge-discharge tests were carried out among hierarchically sulfur loading lithium sulfur batteries. The initial discharge capacity of S/C-46. 3 sample is 1272 mA＆#183;h/g at 0.01 C and 934 mA＆#183;h/g at 0.1 C with good cycle performance.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2014年第8期1715-1719,共5页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:U0734002)
国家'九七三'计划项目(批准号:2011CB935700
2014CB931800)
中国航空基金(批准号:2013ZF51069)资助~~
关键词
金属有机骨架
多孔碳
正极材料
锂硫电池
Metal-organic framework
Porous carbon
Cathode material
Lithium sulphur battery
