Citation: Yunqie Deng, Linjing Yang, Yakun Wang, Lili Zeng, Jiayuan Yu, Bo Chen, Xiaoli Zhang, Weijia Zhou. Ruthenium nanoclusters anchored on cobalt phosphide hollow microspheres by green phosphating process for full water splitting in acidic electrolyte[J]. Chinese Chemical Letters, ;2021, 32(1): 511-515. doi: 10.1016/j.cclet.2020.03.076 shu

Ruthenium nanoclusters anchored on cobalt phosphide hollow microspheres by green phosphating process for full water splitting in acidic electrolyte

Yunqie Deng ^a ,
Linjing Yang ^{a, b} ,
Yakun Wang ^a ,
Lili Zeng ^a ,
Jiayuan Yu ^a ,
Bo Chen ^c ,
Xiaoli Zhang ^{d, **,} ,
Weijia Zhou ^{a, b, *,}

a.
Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China
b.
Shandong Collaborative Innovation Center of Technology and Equipements for Biological Diagnosis and Therapy, Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Ji'nan 250022, China
c.
Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
d.
School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China

^**

xiaolizhang.z@gmail.com

eszhouwj@scut.edu.cn

Received Date: 11 March 2020
Revised Date: 28 March 2020
Accepted Date: 30 March 2020
Available Online: 15 April 2020

Figures(5)

Transition metal phosphide (TMP) based electrocatalysts possessing special crystal and electronic structures attract broad attention in the field of electrocatalysis. Immense effort is made to optimize TMP catalysts aiming to satisfy the electrochemical catalysis performance. In this work, an environmentally friendly in situ green phosphating strategy and spatial limiting effect of the RuCo precursor is employed to fabricate the ruthenium nanoclusters anchored on cobalt phosphide hollow microspheres (Ru NCs/Co₂P HMs). The obtained Ru NCs/Co₂P HMs electrocatalysts exhibit high hydrogen evolution reaction (HER) activity at wide pH ranges, which require an overpotential of 77 mV to achieve the current density of 10 mA/cm² in 0.5 mol/L H₂SO₄ and 118 mV in 1.0 mol/L KOH. Besides, the multifunctional Ru NCs/Co₂P HMs exhibit good oxygen evolution reaction (OER) activity with an overpotential of 197 mV to reach the current density of 10 mA/cm² in 0.5 mol/L H₂SO₄, which is below that of the commercial RuO₂ electrocatalyst (248 mV). A two-electrode electrolyzer is assembled as well, in acid electrolyte, it achieves a current density of 10 mA/cm² at a voltage of 1.53 V, which is superior to that of the benchmark of precious metal-based electrolyzer (1.58 V).
- Green phosphating,
- Cobalt phosphide,
- Ruthenium nanocluster,
- Hydrogen evolution reaction,
- Water splitting
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