结构化学2024，Vol.43Issue(1) ：6-15.DOI:10.1016/j.cjsc.2023.100191

Nanostructured Pt@RuOx catalyst for boosting overall acidic seawater splitting

Zimo Peng Quan Zhang Gaocan Qi Hao Zhang Qian Liu Guangzhi Hu Jun Luo Xijun Liu
结构化学2024，Vol.43Issue(1) ：6-15.DOI:10.1016/j.cjsc.2023.100191
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Nanostructured Pt@RuOx catalyst for boosting overall acidic seawater splitting

Zimo Peng 1Quan Zhang 1Gaocan Qi 2Hao Zhang 1Qian Liu 3Guangzhi Hu 4Jun Luo 5Xijun Liu6
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作者信息

  • 1. Institute for New Energy Materials & Low-Carbon Technologies,School of Materials Science and Engineering,Tianjin University of Technology,Tianjin,300384,China
  • 2. School of Materials Science and Engineering,Tianjin University of Technology,Tianjin 300384,China
  • 3. Institute for Advanced Study,Chengdu University,Chengdu,610106,China
  • 4. Institute for Ecological Research and Pollution Control of Plateau Lakes,School of Ecology and Environmental Science,Yunnan University,Kunming,650091,China
  • 5. ShenSi Lab,Shenzhen Institute for Advanced Study,University of Electronic Science and Technology of China,Longhua District,Shenzhen,518110,China
  • 6. State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures,Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials,MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials,School of Resources,Environment and Materials,Guangxi University,Nanning,530004,China
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Abstract

In the domain of acidic water splitting,designing bifunctional catalysts that marry high activity with enduring stability is a formidable challenge.Herein,we have constructed platinum-containing ruthenium oxide nano-particles(Pt@RuOx NPs)to achieve excellent overall water splitting performance in acidic electrolytes.Pt@RuOx NPs demonstrate exceptional catalytic activity for both the hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)in acidic seawater,requiring overpotentials of only 20 and 157 mV,respectively to achieve a current density of 10 mA cm-2.Furthermore,in 0.5 M H2SO4,this catalyst exhibits high HER(19 mV)and OER(236 mV)catalytic activities.The two-electrode water splitting system composed of bifunctional Pt@RuOx NPs requires cell voltages of only 1.442 and 1.465 V to deliver a current density of 10 mA cm-2 in acidic seawater and 0.5 M H2SO4.Remarkably,this catalyst displays remarkable stability in the water splitting process.It is shown that the introduction of Pt could augment oxygen vacancies and enhance catalytic activity signifi-cantly.The synergy between Pt and Ru further contributes to the improved performance.Additionally,we have observed that acidic seawater holds distinct advantages for acidic water splitting,along with a thorough explo-ration of the relationship between Cl-concentration and catalytic performance.This study not only provides a strategy to improve the catalytic activity and stability of ruthenium-based catalysts for water splitting in acidic environments,but also unveils the promoting effect of Cl-on the catalytic activity in acidic water splitting.

Key words

Acidic water splitting/Bifunctional catalysts/Pt@RuOx nanoparticles/Synergistic effect

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基金项目

国家自然科学基金(51971157)

国家自然科学基金(22075211)

深圳市科技计划(JCYJ20210324115412035)

深圳市科技计划(JCYJ20210324123202008)

深圳市科技计划(JCYJ20210324122803009)

深圳市科技计划(ZDSYS20210813095534001)

Guangdong Foundation for Basic and Applied Basic Research Program(2021A1515110880)

出版年

2024
结构化学
中国化学会 中国科学院福建物质结构研究所

结构化学

CSCD
影响因子：0.44
ISSN：0254-5861
参考文献量60
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