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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
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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