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Realizing both High Energy and High Power Densities by Twisting Three Carbon‐Nanotube‐Based Hybrid Fibers
Author(s) -
Zhang Ye,
Zhao Yang,
Cheng Xunliang,
Weng Wei,
Ren Jing,
Fang Xin,
Jiang Yishu,
Chen Peining,
Zhang Zhitao,
Wang Yonggang,
Peng Huisheng
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201506142
Subject(s) - supercapacitor , carbon nanotube , energy storage , power density , materials science , battery (electricity) , electronics , lithium (medication) , nanotechnology , energy density , optoelectronics , power (physics) , electrical engineering , engineering physics , chemistry , electrochemistry , electrode , physics , engineering , medicine , quantum mechanics , endocrinology
Energy storage devices, such as lithium‐ion batteries and supercapacitors, are required for the modern electronics. However, the intrinsic characteristics of low power densities in batteries and low energy densities in supercapacitors have limited their applications. How to simultaneously realize high energy and power densities in one device remains a challenge. Herein a fiber‐shaped hybrid energy‐storage device (FESD) formed by twisting three carbon nanotube hybrid fibers demonstrates both high energy and power densities. For the FESD, the energy density (50 mWh cm −3 or 90 Wh kg −1 ) many times higher than for other forms of supercapacitors and approximately 3 times that of thin‐film batteries; the power density (1 W cm −3 or 5970 W kg −1 ) is approximately 140 times of thin‐film lithium‐ion battery. The FESD is flexible, weaveable and wearable, which offers promising advantages in the modern electronics.