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.

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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