Novel Sepiolite-Based Materials for Lithium- and Sodium-Ion Storage

被引：18
|
作者：
Jiang, Wenwu [1 ]
Jiang, Yunhong [1 ]
Zhao, Shijun [1 ]
Peng, Jinfeng [2 ]
Qin, Wei [3 ]
Ouyang, Donghong [1 ,4 ]
Ding, Yanhuai [1 ]
机构：
[1] Xiangtan Univ, Inst Rheol Mech, Xiangtan 411105, Hunan, Peoples R China
[2] Xiangtan Univ, Sch Mech Engn, Xiangtan 411105, Hunan, Peoples R China
[3] Changsha Univ Sci & Technol, Sch Mat Sci & Engn, Changsha 410114, Hunan, Peoples R China
[4] Xiangtan Sepiolite Technol Co LTD, Res Inst Sepiolite, Xiangtan 411100, Hunan, Peoples R China
来源：
ENERGY TECHNOLOGY | 2020年 / 8卷 / 03期
基金：
中国国家自然科学基金;
关键词：
anode materials; Li-ion batteries; Na-ion batteries; natural sepiolite; TiO2; ANODE MATERIAL; ANATASE TIO2; CATHODE MATERIAL; BATTERY ANODE; DOPED CARBON; PERFORMANCE; COMPOSITE; NANOMATERIALS; FABRICATION; NANOTUBES;
D O I：
10.1002/ente.201901262
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：
Natural sepiolite is widely used as an inorganic template to prepare functional nanomaterials. Herein, raw sepiolite and ultrafine TiO2 nanocrystals-decorated sepiolite nanofibers are fabricated by a hydrothermal reaction followed by an annealing process. For Li-storage, the TiO2/sepiolite composites exhibit higher specific capacity and a longer lifespan than raw sepiolite. At a current density of 0.3 A g(-1), the optimized TiO2/sepiolite composites deliver a discharge capacity of 1811 and 618 mAh g(-1) at 1st and 300th cycle, respectively. In addition, the composites show a very stable specific capacity of 100 mAh g(-1) at a current density of 0.1 A g(-1) for Na-storage up to 100 cycles.
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页数：7
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