Tin-graphene tubes as anodes for lithium-ion batteries with high volumetric and gravimetric energy densities

Runwei Mo, Xinyi Tan, Fan Li, Ran Tao, Jinhui Xu, Dejia Kong, Zhiyong Wang, Bin Xu, Xiang Wang, Chongmin Wang, Jinlai Li, Yiting Peng () and Yunfeng Lu ()
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Runwei Mo: University of California
Xinyi Tan: University of California
Fan Li: University of California
Ran Tao: University of California
Jinhui Xu: University of California
Dejia Kong: University of California
Zhiyong Wang: University of California
Bin Xu: Jilin University
Xiang Wang: Pacific Northwest National Laboratory
Chongmin Wang: Pacific Northwest National Laboratory
Jinlai Li: ENN Group, Langfang
Yiting Peng: Shanghai University of Electric Power
Yunfeng Lu: University of California

Nature Communications, 2020, vol. 11, issue 1, 1-11

Abstract: Abstract Limited by the size of microelectronics, as well as the space of electrical vehicles, there are tremendous demands for lithium-ion batteries with high volumetric energy densities. Current lithium-ion batteries, however, adopt graphite-based anodes with low tap density and gravimetric capacity, resulting in poor volumetric performance metric. Here, by encapsulating nanoparticles of metallic tin in mechanically robust graphene tubes, we show tin anodes with high volumetric and gravimetric capacities, high rate performance, and long cycling life. Pairing with a commercial cathode material LiNi0.6Mn0.2Co0.2O2, full cells exhibit a gravimetric and volumetric energy density of 590 W h Kg−1 and 1,252 W h L−1, respectively, the latter of which doubles that of the cell based on graphite anodes. This work provides an effective route towards lithium-ion batteries with high energy density for a broad range of applications.

Date: 2020
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DOI: 10.1038/s41467-020-14859-z

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