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Title: Wettable carbon felt framework for high loading Li-metal composite anode

Journal Article · · Nano Energy

Li metal anode has received extensive attention due to its high specific capacity and low potential vs. Li/Li+ for lithium batteries. However, dendrite growth, volume change and "dead" Li formation during cycling hinder its practical application. Here we report an innovated cuprite-coated carbon felt as current collector, with ultralight 3D framework and significantly improved Li-metal loading through thermal infusion. The Li-metal anode has a high Li content of 90 wt.%. The cuprite coating improves the lithiophilicity of carbon felt remarkably, due to the surface affinity reaction between cuprite and Li. Moreover, the porous carbon felt provides good electronic connection and buffer space to accommodate volume change during Li stripping/plating. It leads to uniformly distributed local current density and preference of Li stripping/plating in the highly dispersed concave areas, with suppressed formation of dendrites and “dead” Li. The Li composite electrode shows excellent cycle stability with low polarization in both symmetric and full cells. Hence, this work opens a new approach for the development of high loading Li composite anodes for advanced Li metal batteries.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); USDOE
Grant/Contract Number:
SC0012704
OSTI ID:
1502810
Alternate ID(s):
OSTI ID: 1637191
Report Number(s):
BNL-211428-2019-JAAM
Journal Information:
Nano Energy, Vol. 60, Issue C; ISSN 2211-2855
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 102 works
Citation information provided by
Web of Science

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Cited By (5)

Stable Li Metal Anode Enabled by Space Confinement and Uniform Curvature through Lithiophilic Nanotube Arrays journal November 2019
Inside or Outside: Origin of Lithium Dendrite Formation of All Solid‐State Electrolytes journal September 2019
Self-supported TiN nanorod array/carbon textile as a lithium host that induces dendrite-free lithium plating with high rates and long cycle life journal January 2020
Protection of lithium anodes by fibrous silica nanospheres journal January 2020
In Situ Conversion of Cu 3 P Nanowires to Mixed Ion/Electron‐Conducting Skeleton for Homogeneous Lithium Deposition journal November 2019