Industrially weavable metal/cotton yarn air electrodes for highly flexible and stable wire-shaped Li-O2 batteries

Li-O2 batteries feature extremely high energy density, making their wire-shaped devices a promising candidate for wearable energy-storage application. However, it is a major challenge to explore industrially feasible electrodes for this type of linear batteries. Herein, for the first time, we have d...

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Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2017-02, Vol.5 (7), p.3638-3644
Main Authors: Lin, Xiujing, Kang, Qi, Zhang, Ziqiang, Liu, Ruiqing, Li, Yi, Huang, Zhendong, Feng, Xiaomiao, Ma, Yanwen, Huang, Wei
Format: Article
Language:English
Subjects:
Bending
Carbon nanotubes
Cotton
Electrodes
Feasibility
Metal air batteries
Strategy
Yarns
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Summary:Li-O2 batteries feature extremely high energy density, making their wire-shaped devices a promising candidate for wearable energy-storage application. However, it is a major challenge to explore industrially feasible electrodes for this type of linear batteries. Herein, for the first time, we have demonstrated an effective strategy to fabricate a feasible electrode on a large scale by dyeing industrially weavable and highly conductive metal/cotton yarns with the active material ink, RuO2-coated nitrogen-doped carbon nanotube (CNT). The obtained wire-shaped Li-O2 battery exhibits a high discharge capacity of 1981 mA h gcarbon-1 at a current density of 320 mA gcarbon-1 and could stably work beyond 100 cycles (more than 600 hours) without obvious degradation, even under bending conditions. The new freestanding type electrode will represent a critical step towards the production and practical application of flexible Li-O2 batteries.
ISSN:2050-7488
2050-7496
DOI:10.1039/c6ta09806a