Nanoperforated graphene hosts for stable lithium metal anodes

Kim Jeong-A (김경아); Kim Dong-Kyu (김동규); Shin Hyeung-Keun (신형근); Jeong Sang-Won (정상원); Hong Young-Hyun (홍연현); Kang Byeong-Jun (강병준); Ahn Wook (안욱); Sure Jagadeesh; Kim Hyun-Kyung (김현경)

doi:10.1007/s42823-024-00775-5

Nanoperforated graphene hosts for stable lithium metal anodes

Carbon Letters
Abbr : Carbon Lett.
2024, 34(7), pp.2027~2033
DOI : 10.1007/s42823-024-00775-5
Publisher : Korean Carbon Society
Research Area : Natural Science > Natural Science General > Other Natural Sciences General
Received : May 21, 2024
Accepted : June 30, 2024
Published : August 1, 2024

Kim Jeong-A ¹, Kim Dong-Kyu ¹, Shin Hyeung-Keun ¹, Jeong Sang-Won ¹, Hong Young-Hyun ¹, Kang Byeong-Jun ¹, Ahn Wook ², Sure Jagadeesh ³, Kim Hyun-Kyung ¹

¹강원대학교
²순천향대학교
³University of Wisconsin-Madison

Accredited

ABSTRACT

Graphene has been extensively investigated as a host material for Li metal anodes owing to its light weight, high electrical conductivity, high surface area, and exceptional mechanical rigidity. Many studies have focused on assembling two-dimensional (2D) graphene sheets into three-dimensional (3D) forms, such as lamination, spheres, and carbon nanotubes; however, little attention has been paid to the technology of modifying 2D graphene sheets. Herein, nanoperforated graphene (NPG) was fabricated through a relatively straightforward process employing metal oxide catalysts based on aqueous solutions. Nanoperforations exhibited a size of approximately 5 nm and were introduced on the graphene sheet and lithiophilic carbonyl groups (C = O) at the edges, facilitating the rapid diffusion of Li+ and lowering the Li nucleation overpotential. In comparison to the reduced graphene oxide (RGO) host, the NPG host exhibited a lower lithium nucleation overpotential and a stable overpotential of ~ 30 mV for over 150 cycles as a stable host structure as a Li metal anode for Li metal batteries.

KEYWORDS

Nanoperforated graphene Lithiophilic groups Host materials Lithium metal batteries

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This paper was written with support from the National Research Foundation of Korea.

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Carbon Letters 2024 KCI Impact Factor : 0.95 KCI-WoS Impact Factor : 4.74

Nanoperforated graphene hosts for stable lithium metal anodes

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* References for papers published after 2024 are currently being built.

Carbon Letters 2024 KCI Impact Factor : 0.95 KCI-WoS Impact Factor : 4.74

Nanoperforated graphene hosts for stable lithium metal anodes

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