Issue 6, 2016
From the journal:

Journal of Materials Chemistry A

Cloud-like graphene nanoplatelets on Nd0.5Sr0.5CoO3−δ nanorods as an efficient bifunctional electrocatalyst for hybrid Li–air batteries†

Changmin Kim,a   Ohhun Gwon,a   In-Yup Jeon,a   Youngsik Kim,a   Jeeyoung Shin,b   Young-Wan Ju,*a   Jong-Beom Baek*a  and  Guntae Kim*a  

* Corresponding authors

a Department of Energy Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Republic of Korea
E-mail: ywju@unist.ac.kr, jbbaek@unist.ac.kr, gtkim@unist.ac.kr

b Department of Mechanical Engineering, Dong-Eui University, Busan, Republic of Korea

Abstract

With the recognition of metal–air batteries as promising candidates for clean and efficient energy storage, the development of inexpensive and effective bifunctional catalysts for the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) has become one of the most important topics in this field. Herein, we designed new composite catalysts consisting of a nanorod type Nd0.5Sr0.5CoO3−δ (NSC) perovskite and edge-iodinated graphene nanoplatelets (IGnPs) as bifunctional catalysts for ORR and OER. Interestingly, the simple application of ultrasonication endowed the catalyst with a fascinating morphology comprising cloud-like IGnPs on NSC nanorods (NSC@IGnP). Benefiting from the unique morphological features, NSC@IGnP provides superior bifunctional activities toward both ORR and OER, remarkable cell performance, and exceptionally high stability for hybrid Li–air batteries.

Graphical abstract: Cloud-like graphene nanoplatelets on Nd0.5Sr0.5CoO3−δ nanorods as an efficient bifunctional electrocatalyst for hybrid Li–air batteries

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Article information

DOI
https://doi.org/10.1039/C5TA08493H
Article type
Paper
Submitted
22 Oct 2015
Accepted
08 Jan 2016
First published
11 Jan 2016
This article is Open Access
Creative Commons BY-NC license

J. Mater. Chem. A, 2016,4, 2122-2127

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Cloud-like graphene nanoplatelets on Nd0.5Sr0.5CoO3−δ nanorods as an efficient bifunctional electrocatalyst for hybrid Li–air batteries

C. Kim, O. Gwon, I. Jeon, Y. Kim, J. Shin, Y. Ju, J. Baek and G. Kim, J. Mater. Chem. A, 2016, 4, 2122 DOI: 10.1039/C5TA08493H

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