Elastic and Wearable Wire-Shaped Lithium-Ion Battery with High Electrochemical Performance

被引:331
作者
Ren, Jing [1 ,2 ]
Zhang, Ye [1 ,2 ]
Bai, Wenyu [1 ,2 ]
Chen, Xuli [1 ,2 ]
Zhang, Zhitao [1 ,2 ]
Fang, Xin [1 ,2 ]
Weng, Wei [1 ,2 ]
Wang, Yonggang [3 ,4 ]
Peng, Huisheng [1 ,2 ]
机构
[1] Fudan Univ, State Key Lab Mol Engn Polymers, Dept Macromol Sci, Shanghai 200438, Peoples R China
[2] Fudan Univ, Adv Mat Lab, Shanghai 200438, Peoples R China
[3] Fudan Univ, Inst New Energy, Dept Chem, Shanghai 200438, Peoples R China
[4] Fudan Univ, Inst New Energy, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200438, Peoples R China
关键词
carbon-based materials; electrochemistry; lithium-ion batteries; nanotubes; CATHODE MATERIAL; ENERGY-STORAGE; ANODE MATERIAL; CARBON; SUPERCAPACITORS; FIBER; SAFE; ELECTRODES; NANOWIRES; CAPACITOR;
D O I
10.1002/anie.201402388
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A stretchable wire-shaped lithium-ion battery is produced from two aligned multi-walled carbon nanotube/lithium oxide composite yarns as the anode and cathode without extra current collectors and binders. The two composite yarns can be well paired to obtain a safe battery with superior electrochemical properties, such as energy densities of 27 Whkg(-1) or 17.7 mWhcm(-3) and power densities of 880 Wkg(-1) or 0.56 Wcm(-3), which are an order of magnitude higher than the densities reported for lithium thin-film batteries. These wire-shaped batteries are flexible and light, and 97% of their capacity was maintained after 1000 bending cycles. They are also very elastic as they are based on a modified spring structure, and 84% of the capacity was maintained after stretching for 200 cycles at a strain of 100%. Furthermore, these novel wire-shaped batteries have been woven into lightweight, flexible, and stretchable battery textiles, which reveals possible large-scale applications.
引用
收藏
页码:7864 / 7869
页数:6
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