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Angew Chem Int Ed Engl. 2016 Nov 7;55(46):14384-14388. doi: 10.1002/anie.201607951. Epub 2016 Oct 12.

A Self-Healing Aqueous Lithium-Ion Battery.

Author information

1
State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, Shanghai, 200438, China.
2
Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University, Shanghai, 200438, China.
3
Energy Materials Lab, Materials Research Center, Samsung Advanced Institute of Technology, Samsung Electronics Co., LTD., 130 Samsung-ro, Suwon-si, Gyeonggi-do, 443803, South Korea.
4
Samsung R&D Institute China, Beijing, 100028, China.
5
Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University, Shanghai, 200438, China. ygwang@fudan.edu.cn.
6
State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, Shanghai, 200438, China. penghs@fudan.edu.cn.

Abstract

Flexible lithium-ion batteries are critical for the next-generation electronics. However, during the practical application, they may break under deformations such as twisting and cutting, causing their failure to work or even serious safety problems. A new family of all-solid-state and flexible aqueous lithium ion batteries that can self-heal after breaking has been created by designing aligned carbon nanotube sheets loaded with LiMn2 O4 and LiTi2 (PO4 )3 nanoparticles on a self-healing polymer substrate as electrodes, and a new kind of lithium sulfate/sodium carboxymethylcellulose serves as both gel electrolyte and separator. The specific capacity, rate capability, and cycling performance can be well maintained after repeated cutting and self-healing. These self-healing batteries are demonstrated to be promising for wearable devices.

KEYWORDS:

carbon nanotubes; flexible electronics; lithium-ion batteries; nanotechnology; self-healing polymers

PMID:
27730753
DOI:
10.1002/anie.201607951

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