Supremely elastic gel polymer electrolyte enables a reliable electrode structure for silicon-based anodes

Qingquan Huang, Jiangxuan Song, Yue Gao, Daiwei Wang, Shuai Liu, Shufu Peng, Courtney Usher, Alan Goliaszewski, Donghai Wang

Research output: Contribution to journalArticle

Abstract

Silicon-based materials are promising anodes for next-generation lithium-ion batteries, owing to their high specific capacities. However, the huge volume expansion and shrinkage during cycling result in severe displacement of silicon particles and structural collapse of electrodes. Here we report the use of a supremely elastic gel polymer electrolyte to address this problem and realize long-term stable cycling of silicon monoxide anodes. The high elasticity of the gel polymer electrolyte is attributed to the use of a unique copolymer consisting of a soft ether domain and a hard cyclic ring domain. Consequently, the displacement of silicon monoxide particles and volume expansion of the electrode were effectively reduced, and the damage caused by electrode cracking is alleviated. A SiO|LiNi0.5Co0.2Mn0.3O2 cell shows 70.0% capacity retention in 350 cycles with a commercial-level reversible capacity of 3.0 mAh cm−2 and an average Coulombic efficiency of 99.9%.

Original languageEnglish (US)
Article number5586
JournalNature communications
Volume10
Issue number1
DOIs
StatePublished - Dec 1 2019

Fingerprint

Silicon
Electrolytes
Anodes
Polymers
Electrodes
anodes
Gels
electrolytes
gels
electrodes
polymers
silicon
cycles
Ether
expansion
Elasticity
Copolymers
shrinkage
electric batteries
ethers

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

Cite this

Huang, Qingquan ; Song, Jiangxuan ; Gao, Yue ; Wang, Daiwei ; Liu, Shuai ; Peng, Shufu ; Usher, Courtney ; Goliaszewski, Alan ; Wang, Donghai. / Supremely elastic gel polymer electrolyte enables a reliable electrode structure for silicon-based anodes. In: Nature communications. 2019 ; Vol. 10, No. 1.
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abstract = "Silicon-based materials are promising anodes for next-generation lithium-ion batteries, owing to their high specific capacities. However, the huge volume expansion and shrinkage during cycling result in severe displacement of silicon particles and structural collapse of electrodes. Here we report the use of a supremely elastic gel polymer electrolyte to address this problem and realize long-term stable cycling of silicon monoxide anodes. The high elasticity of the gel polymer electrolyte is attributed to the use of a unique copolymer consisting of a soft ether domain and a hard cyclic ring domain. Consequently, the displacement of silicon monoxide particles and volume expansion of the electrode were effectively reduced, and the damage caused by electrode cracking is alleviated. A SiO|LiNi0.5Co0.2Mn0.3O2 cell shows 70.0{\%} capacity retention in 350 cycles with a commercial-level reversible capacity of 3.0 mAh cm−2 and an average Coulombic efficiency of 99.9{\%}.",
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Supremely elastic gel polymer electrolyte enables a reliable electrode structure for silicon-based anodes. / Huang, Qingquan; Song, Jiangxuan; Gao, Yue; Wang, Daiwei; Liu, Shuai; Peng, Shufu; Usher, Courtney; Goliaszewski, Alan; Wang, Donghai.

In: Nature communications, Vol. 10, No. 1, 5586, 01.12.2019.

Research output: Contribution to journalArticle

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AU - Huang, Qingquan

AU - Song, Jiangxuan

AU - Gao, Yue

AU - Wang, Daiwei

AU - Liu, Shuai

AU - Peng, Shufu

AU - Usher, Courtney

AU - Goliaszewski, Alan

AU - Wang, Donghai

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