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Issue 17, 2019
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Rapid oxygen diffusive lithium–oxygen batteries using a restacking-inhibited, free-standing graphene cathode film

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Abstract

A graphene-based porous electrode for a lithium–oxygen (Li–O2) battery is investigated for use in next generation energy storage systems. The porosity of the cathode electrode in Li–O2 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–O2 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–O2 battery cathodes.

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

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Publication details

The article was received on 10 Jan 2019, accepted on 22 Mar 2019 and first published on 23 Mar 2019


Article type: Paper
DOI: 10.1039/C9TA00320G
Citation: J. Mater. Chem. A, 2019,7, 10397-10404

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

    I. Jung, H. J. Kwon, M. Kim, D. Kim, J. Kim, H. Lee, D. Yun, S. Byun, D. Yu, H. An, J. Jang, D. Im and H. Lee, J. Mater. Chem. A, 2019, 7, 10397
    DOI: 10.1039/C9TA00320G

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