Title:
HOST MATERIAL FOR STABILIZING LITHIUM METAL ELECTRODE, AND FABRICATING METHOD AND APPLICATIONS OF SAME
Document Type and Number:
WIPO Patent Application WO/2018/081055
Kind Code:
A3
Abstract:
The invention relates to a host material for stabilizing a Li metal electrode, fabricating methods and applications of the same. The host material includes crumpled graphene balls operably defining a scaffold having volumes and voids inside and in between the crumpled graphene balls so as to allow uniform and stable Li deposition/dissolution inside and in between the crumpled graphene balls without electrode volume fluctuations or with sufficiently small electrode volume fluctuations. The crumpled paper ball-like structures of graphene particles can readily assemble to yield the scaffold with scalable Li loading up to 10 mAh cm-2 within tolerable volume fluctuations. High Coulombic efficiency of 97.5% over 750 cycles (1500 hours) is achieved. Plating/stripping Li up to 12 mAh cm-2 on the crumpled graphene scaffold does not experience dendrite growth.
Inventors:
HUANG JIAXING (US)
LUO JIAYAN (US)
LUO JIAYAN (US)
Application Number:
PCT/US2017/057993
Publication Date:
October 11, 2018
Filing Date:
October 24, 2017
Export Citation:
Assignee:
UNIV NORTHWESTERN (US)
International Classes:
H01M4/134; C01B32/184; H01M4/62; H01M10/052
Foreign References:
| US20130344392A1 | 2013-12-26 | |||
| US20150380176A1 | 2015-12-31 | |||
| US20140057113A1 | 2014-02-27 |
Other References:
LIANG, ZHENG ET AL.: "Composite lithium metal anode by melt infusion of lithium into a 3D conducting scaffold with lithiophilic coating", PNAS, vol. 113, no. 11, 15 March 2016 (2016-03-15), pages 2862 - 2867, XP055550589
ZHAO, YUNLONG ET AL.: "Self-adaptive strain-relaxation optimization for high-energy lithium storage material through crumpling of graphene", NATURE COMMUNICATIONS, vol. 5, no. 4565, 1 August 2014 (2014-08-01), pages 1 - 8, XP055550590
ZHAO, YUNLONG ET AL.: "Self-adaptive strain-relaxation optimization for high-energy lithium storage material through crumpling of graphene", NATURE COMMUNICATIONS, vol. 5, no. 4565, 1 August 2014 (2014-08-01), pages 1 - 8, XP055550590
Attorney, Agent or Firm:
XIA, Tim Tingkang (US)
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