Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 53, Issue 30, Pages 7864-7869Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201402388
Keywords
carbon-based materials; electrochemistry; lithium-ion batteries; nanotubes
Categories
Funding
- MOST [2011CB932503]
- NSFC [21225417]
- STCSM [12nm0503200]
- Fok Ying Tong Education Foundation
- Program for Special Appointments of Professors at Shanghai Institutions of Higher Learning
- Program for Outstanding Young Scholars from the Organization Department of the CPC Central Committee
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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.
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