Rapid oxygen diffusive lithium-oxygen batteries using a restacking-inhibited, free-standing graphene cathode film

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Title
Rapid oxygen diffusive lithium-oxygen batteries using a restacking-inhibited, free-standing graphene cathode film
Author(s)
In-Sun Jung; Hyuk Jae Kwon; Mokwon Kim; Doyoung Kim; Jung-Hwa Kim; Hyangsook Lee; Dongjin Yun; Sunjung Byun; Daeun Yu; Hyunju An; Jaeduck Jang; Dongmin Im; Hyoyoung Lee
Publication Date
2019-05
Journal
JOURNAL OF MATERIALS CHEMISTRY A, v.7, no.17, pp.10397 - 10404
Publisher
ROYAL SOC CHEMISTRY
Abstract
© The Royal Society of Chemistry. A graphene-based porous electrode for a lithium-oxygen (Li-O 2 ) battery is investigated for use in next generation energy storage systems. The porosity of the cathode electrode in Li-O 2 batteries is a key factor in increasing their oxygen diffusion rate and electrochemical activity, and enables a longer cycle life. In addition, the adsorption behavior of the electrolyte is an important factor for the charging process and diffusion of oxygen. We report the fabrication of a restacking-inhibited film cathode using corrugated and highly porous reduced graphene flakes that have an outstanding capacity and cycle life. We have demonstrated a robust porous cathode film for the next generation Li-O 2 batteries, which provides (1) rich voids and spaces for oxygen-related reactions, (2) easy accessibility to the electrolyte and rapid oxygen diffusion. This study can be applied for the design of new solution-processed graphene and the development of Li-O 2 battery cathodes
URI
https://pr.ibs.re.kr/handle/8788114/5975
ISSN
2050-7488
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
Files in This Item:
Rapid oxygen_Journal of Materials Chemistry A_Hyoyoung Lee.pdfDownload

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