Mechanically Robust Self-Organized Crack-Free Nanocellular Graphene with Outstanding Electrochemical Properties in Sodium Ion Battery

Wong-Young Park; Jiuhui Han; Jongun Moon; Soo-Hyun Joo; Takeshi Wada; Yuji Ichikawa; Kazuhiro Ogawa; Hyoung Seop Kim; Mingwei Chen; Hidemi Kato

doi:10.1002/adma.202311792

Mechanically Robust Self-Organized Crack-Free Nanocellular Graphene with Outstanding Electrochemical Properties in Sodium Ion Battery

Adv Mater. 2024 Feb 9:e2311792. doi: 10.1002/adma.202311792. Online ahead of print.

Authors

Wong-Young Park¹, Jiuhui Han^{2

3}, Jongun Moon^{4

5}, Soo-Hyun Joo^{1

6}, Takeshi Wada¹, Yuji Ichikawa⁷, Kazuhiro Ogawa⁷, Hyoung Seop Kim^{4

8

9}, Mingwei Chen¹⁰, Hidemi Kato¹

Affiliations

¹ Institute for Materials Research, Tohoku University, Katahira 2-1-1, Sendai, 980-8577, Japan.
² Tianjin Key Laboratory of Advanced Functional Porous Materials, Institute for New Energy Materials and Low-Carbon Technologies, Tianjin University of Technology, 391 Binshui West Road, Tianjin, 300384, China.
³ Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, 6-3 Aoba, Sendai, 980-8578, Japan.
⁴ Department of Materials Science and Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Pohang, 37673, Republic of Korea.
⁵ Division of Advanced Materials Engineering, Center for Advanced Powder Materials and Parts, Kongju National University, 1223-24 Cheonan-daero, Cheonan, 31080, Republic of Korea.
⁶ Department of Materials Science and Engineering, Dankook University, 119 Dandae-ro, Cheonan, 31116, Republic of Korea.
⁷ Fracture and Reliability Research Institute (FRI), Tohoku University, 6-6-11 Aoba, Sendai, 980-8579, Japan.
⁸ Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Katahira 2-1-1, Sendai, 980-8577, Japan.
⁹ Institute for Convergence Research and Education in Advanced Technology, Yonsei University, Yonsei-ro 50, Seoul, 03722, Republic of Korea.
¹⁰ Department of Materials Science and Engineering, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD, 21218-2681, USA.

PMID: 38336362
DOI: 10.1002/adma.202311792

Abstract

Crack-free nanocellular graphenes are attractive materials with extraordinary mechanical and electrochemical properties, but their homogeneous synthesis on the centimeter scale is challenging. Here, a strong nanocellular graphene film achieved by the self-organization of carbon atoms using liquid metal dealloying and employing a defect-free amorphous precursor is reported. This study demonstrates that a Bi melt strongly catalyzes the self-structuring of graphene layers at low processing temperatures. The robust nanoarchitectured graphene displays a high-genus seamless framework and exhibits remarkable tensile strength (34.8 MPa) and high electrical conductivity (1.6 × 10⁴ S m^-1 ). This unique material has excellent potential for flexible and high-rate sodium-ion battery applications.

Keywords: crack-free; liquid metal dealloying; multifunctional; nanocellular graphene.

Abstract

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