Liquefied-Natural-Gas-Derived Vertical Carbon Layer Deposited on SiO as Cost-Effective Anode for Li-Ion Batteries. Issue 2 (1st February 2022)

• Record Type: Journal Article
• Authors: Ha, Jaeyun; Park, Heonsoo; Kim, Moonsu; Kim, Yong-Tae; Choi, Jinsub
• Is Part Of: Journal of the Electrochemical Society. Volume 169:Issue 2(2022)
• Publication Date: 2022-02-01
• Subjects: silicon monoxide -- Chemical Vapor Deposition -- carbon coating -- liquefied natural gas -- lithium-ion battery; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/1945-7111/ac4bf1
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : Deposition of a carbon layer on silicon monoxide (SiO) is an attractive method for mitigating the inherent low electrical conductivity and significant volume expansion of SiO, which is a promising anode candidate for Li-ion batteries with high energy density. Herein, we report a method for coating SiO with a vertically grown carbon layer via chemical vapor deposition using low-cost liquefied natural gas (LNG), which is 13 times less expensive than commonly used high-purity CH4 . The physical and chemical properties of the carbon-coated samples obtained using CH4 (C-SiO-CH4 ) and LNG (C-SiO-LNG) were identical, and their electrochemical performances were superior to that of pristine SiO. This low-cost, high-volume manufacturing method promotes the industrialization of Si–C materials for next-generation Li-ion batteries.