Zian Xu , Jian Zhu , Zheng Shu , Yu Xia , Rouxi Chen , Shaoqing Chen , Yu Wang , Lin Zeng , Jiacheng Wang , Yongqing Cai , Shi Chen , Fuqiang Huang , Hsing-Lin Wang
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引用次数: 0
Abstract
Metal aggregation, caused by high current density or long-cycling catalysis, severely affects the stability of ruthenium (Ru)-based catalysts toward hydrogen evolution reaction (HER). Herein, we constructed an anti-growth strategy of phosphorus (P)-induced Ru clusters (1.3 nm) integrated with adjacent Ru single atoms on nitrogen (N)-doped carbon fibers (RuSA/NP-PNCFs) for ultra-stable HER. The RuSA/NP-PNCFs exhibit outstanding activity (8 and 132 mV at 10 and 1,000 mA cm−2) and record durability (100,000 cycles and 1,000 h at 600 mA cm−2). Thanks to the optimized binding energy and orbital interaction between Ru and P/N, the size variation is only 0.8 nm, and single atoms are also well preserved. Both experiments and theoretical simulations indicate that the heteroatom P can not only boost the capacity of H2O dissociation but also suppress the aggregation of Ru clusters and single atoms during HER. This work provides an effective strategy for designing stable metal cluster-single-atom systems for advanced electrocatalysts.
期刊介绍:
Joule is a sister journal to Cell that focuses on research, analysis, and ideas related to sustainable energy. It aims to address the global challenge of the need for more sustainable energy solutions. Joule is a forward-looking journal that bridges disciplines and scales of energy research. It connects researchers and analysts working on scientific, technical, economic, policy, and social challenges related to sustainable energy. The journal covers a wide range of energy research, from fundamental laboratory studies on energy conversion and storage to global-level analysis. Joule aims to highlight and amplify the implications, challenges, and opportunities of novel energy research for different groups in the field.