Issue 17, 2023
From the journal:

Materials Chemistry Frontiers

Porous RuO2-Co3O4/C nanocubes as high-performance trifunctional electrocatalysts for zinc–air batteries and overall water splitting†

Jingyi Shi,‡a   Niannian Wang,‡b   Wenhao Du,b   Yi Feng*c  and  Xin-Yao Yu ORCID logo *ad  

* Corresponding authors

a Institutes of Physical Science and Information Technology, Institute of Energy, Hefei Comprehensive National Science Centre (Auhui Energy Laboratory), Auhui University, Hefei 230601, P. R. China
E-mail: yuxinyao@ahu.edu.cn

b Wendian College, Anhui University, Hefei 230601, P. R. China

c Department of Polymer Materials and Engineering, Academy of Chemical Engineering, Hebei University of Technology, Tianjin 300130, P. R. China
E-mail: luckyii0512@hebut.edu.cn

d School of Materials Science and Engineering, Anhui University, Hefei 230601, P. R. China

Abstract

The exploration of high-performance trifunctional electrocatalysts for the oxygen reduction reaction (ORR), the oxygen evolution reaction (OER), and the hydrogen evolution reaction (HER) is quite critical for the development of sustainable energy technologies. Herein, a facile template-engaged approach is developed to synthesize porous RuO2-Co3O4/C (RuCoO/C) nanocubes as advanced trifunctional electrocatalysts. Benefiting from the compositional and structural features, the as-synthesized RuCoO/C nanocubes exhibit high half-wave potential toward the ORR (E1/2@0.83 V) and small overpotentials for the OER (223 mV@10 mA cm−2) and the HER (49 mV@10 mA cm−2), as well as good stability for the ORR/OER/HER. When evaluated in rechargeable zinc–air batteries (ZABs) and water electrolysis cells, the RuCoO/C nanocubes demonstrate both high efficiency and splendid stability. As a proof of concept, an integrated system is established to achieve the production of H2 by ZAB-powered overall water splitting.

Graphical abstract: Porous RuO2-Co3O4/C nanocubes as high-performance trifunctional electrocatalysts for zinc–air batteries and overall water splitting

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Article information

DOI
https://doi.org/10.1039/D3QM00507K
Article type
Research Article
Submitted
03 May 2023
Accepted
26 Jun 2023
First published
27 Jun 2023

Mater. Chem. Front., 2023,7, 3774-3782

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Porous RuO2-Co3O4/C nanocubes as high-performance trifunctional electrocatalysts for zinc–air batteries and overall water splitting

J. Shi, N. Wang, W. Du, Y. Feng and X. Yu, Mater. Chem. Front., 2023, 7, 3774 DOI: 10.1039/D3QM00507K

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