Journal
SMALL
Volume 18, Issue 42, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.202203778
Keywords
directed transformation; hierarchical nanostructures; interface engineering; RuO; (2)-based electrocatalysts; seawater splitting
Categories
Funding
- National Natural Science Foundation of China [51861135313]
- Sino-German Centre's COVID-19 Related Bilateral Collaborative project [C-0046]
- National 111 project [B20002]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT_15R52]
- Shenzhen Science and Technology Program [JCYJ20210324142010029, GJHZ20210705143204014]
- Guangdong Province International Scientific and Technological Cooperation Projects [2020A0505100036]
- Guangdong Basic and Applied Basic Research Foundation [2019A1515110435, 2021A1515111131, 2022A1515010137, 2022A1515010504]
- NRF [113638]
- South Africa's National Research Foundation through the SARChI Chair in Materials Electrochemistry and Energy Technologies [132739]
- Royal Society [UF150104]
- Prime Minister's Fuel-Choice Initiative - Planning & Budgeting Committee of the Israel Council for Higher Education (CHE)
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An electrocatalyst composed of RuO2 surrounded by interfacial carbon is synthesized through controllable oxidization-calcination. This electrocatalyst provides efficient charge transfer, numerous active sites, and promising activity for pH-universal electrocatalytic overall seawater splitting. A mechanism for the catalytic activity of the composite is proposed based on the experimental results. Finally, a solar-driven system is assembled and used for overall seawater splitting, showing 95% Faraday efficiency.
An electrocatalyst composed of RuO2 surrounded by interfacial carbon, is synthesized through controllable oxidization-calcination. This electrocatalyst provides efficient charge transfer, numerous active sites, and promising activity for pH-universal electrocatalytic overall seawater splitting. An electrolyzer with this catalyst gives current densities of 10 mA cm(-2) at a record low cell voltage of 1.52 V, and shows excellent durability at current densities of 10 mA cm(-2) for up to 100 h. Based on the results, a mechanism for the catalytic activity of the composite is proposed. Finally, a solar-driven system is assembled and used for overall seawater splitting, showing 95% Faraday efficiency.
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