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Atomic Layer Co 3 O 4 Nanosheets: The Key to Knittable Zn–Air Batteries
Author(s) -
Chen Xu,
Zhong Cheng,
Liu Bin,
Liu Zhi,
Bi Xuanxuan,
Zhao Naiqing,
Han Xiaopeng,
Deng Yida,
Lu Jun,
Hu Wenbin
Publication year - 2018
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201702987
Subject(s) - materials science , battery (electricity) , energy storage , nanotechnology , electronics , catalysis , layer (electronics) , chemical engineering , electrical engineering , chemistry , power (physics) , biochemistry , physics , quantum mechanics , engineering
Flexible, wearable, and portable energy storage devices with high‐energy density are crucial for next‐generation electronics. However, the current battery technologies such as lithium ion batteries have limited theoretical energy density. Additionally, battery materials with small scale and high flexibility which could endure the large surface stress are highly required. In this study, a yarn‐based 1D Zn–air battery is designed, which employs atomic layer thin Co 3 O 4 nanosheets as the oxygen reduction reaction/oxygen evolution reaction catalyst. The ultrathin nanosheets are synthesized by a high‐yield and facile chemical method and show a thickness of only 1.6 nm, corresponding to few atomic layers. The 1D Zn–air battery shows high cycling stability and high rate capability. The battery is successfully knitted into clothes and it shows high stability during the large deformation and knotting conditions.