In Situ-Derived Porous SiO2/Carbon Nanocomposite from Lichens for Lithium-Ion Batteries

被引：8
|
作者：
Liu, Xin [1 ,2 ]
Xing, Chao [2 ]
Li, Fangnan [2 ]
Qu, Jie [1 ]
Wang, Chao [2 ]
Lai, Chao [2 ]
机构：
[1] Hunan Normal Univ, Coll Chem & Chem Engn, Changsha 410081, Hunan, Peoples R China
[2] Jiangsu Normal Univ, Sch Chem & Mat Chem, Xuzhou 221116, Jiangsu, Peoples R China
来源：
ENERGY TECHNOLOGY | 2019年 / 7卷 / 08期
基金：
中国国家自然科学基金;
关键词：
biochar; high capacity; lichens; lithium-ion batteries; SiO2; ANODE MATERIALS; RATE PERFORMANCE; RICE HUSKS; CARBON; COMPOSITE; DEPOSITION; CAPACITY; BIOMASS; TIO2;
D O I：
10.1002/ente.201800840
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
A 3D SiO2/carbon nanocomposite is fabricated from lichens successfully. By acid-washing, nanoporous structure can be generated by removing inorganic compounds. Comparing with the SiO2/carbon nanocomposite before acid-washing, the one after acid-washing displays decreased electrochemical reaction resistance and better electrochemical performance as anode materials for the lithium-ion battery. At a current density of 100 mA g(-1), the hierarchical porous SiO2/carbon nanocomposite after acid-washing shows excellent cycle stability. A high reversible capacity of 583.3 mAh g(-1) can still be obtained after 100 cycles, which is much higher than the theoretical capacity of graphite.
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页数：6
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