期刊
ACS NANO
卷 12, 期 4, 页码 3140-3148出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.7b09003
关键词
rechargeable zinc ion batteries; yarn battery; polyacrylamide; waterproof stretchable
类别
资金
- NSFC/RGC Joint Research Scheme [N_CityU123/15]
- City University of Hong Kong [PJ7004645]
- Science & Technology Department of Sichuan Province [2017JY0088]
- Chengdu Research Institute, City University of Hong Kong
Emerging research toward next-generation flexible and wearable electronics has stimulated the efforts to build highly wearable, durable, and deformable energy devices with excellent electrochemical performances. Here, we develop a high-performance, waterproof, tailorable, and stretchable yarn zinc ion battery (ZIB) using double-helix yarn electrodes and a cross-linked polyacrylamide (PAM) electrolyte. Due to the high ionic conductivity of the PAM electrolyte and helix structured electrodes, the yarn ZIB delivers a high specific capacity and volumetric energy density (302.1 mAh g(-1) and 53.8 mWh cm(-3), respectively) as well as excellent cycling stability (98.5% capacity retention after 500 cycles). More importantly, the quasi-solid-state yarn ZIB also demonstrates superior knittability, good stretchability (up to 300% strain), and superior waterproof capability (high capacity retention of 96.5% after 12 h underwater operation). In addition, the long yarn ZIB can be tailored into short ones, and each part still functions well. Owing to its weavable and tailorable nature, a 1.1 m long yarn ZIB was cut into eight parts and woven into a textile that was used to power a long flexible belt embedded with 100 LEDs and a 100 cm(2) flexible electroluminescent panel.
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