Uneven Co–N–C-coated graphene as a durable support for low-loading Pt oxygen reduction catalyst

Muyu Xu; Wenhui Ni; Yichen Wei; Jun Wang; Mingyu Liu; Ruoxuan Zhi; Junying Wang; Zelin Wu; Huinian Zhang; Junzhong Wang

doi:10.1039/D5CC05415J

Uneven Co–N–C-coated graphene as a durable support for low-loading Pt oxygen reduction catalyst

Muyu Xu,†^a Wenhui Ni,†^a Yichen Wei,^a Jun Wang,^a Mingyu Liu,^a Ruoxuan Zhi,^a Junying Wang,

*^b Zelin Wu,*^a Huinian Zhang*^c and Junzhong Wang

*^a

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* Corresponding authors

^a Institutes of Physical Science and Information Technology, Anhui Graphene Carbon Fiber Research Center, Anhui University, Hefei 230601, China
E-mail: 1592577524@qq.com, wangjz@ahu.edu.cn

^b Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
E-mail: wangjy@sxicc.ac.cn

^c School of Energy and Power Engineering, North University of China, Taiyuan 030051, China
E-mail: zhanghuinian123@nuc.edu.cn

Abstract

An uneven Co–N–C layer coated on electrochemically-exfoliated graphene as an active support (E_1/2 0.788 V) to stabilize low-amount Pt catalyst was synthesized. The catalyst exhibited superior oxygen reduction activity (0.72 A mg_Pt⁻¹) and durability (10 mV loss after 50k cycles) in acid. Graphene reinforced the metal–support interaction, benefitting the conductivity, activity and durability of the catalyst.

This article is part of the themed collection: Advances in Low-Dimensional Materials for Optoelectronic Devices, Energy Catalysis, and Storage

Chemical Communications

Uneven Co–N–C-coated graphene as a durable support for low-loading Pt oxygen reduction catalyst

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Uneven Co–N–C-coated graphene as a durable support for low-loading Pt oxygen reduction catalyst

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