Autor: |
Xinxuan Duan, Qihao Sha, Pengsong Li, Tianshui Li, Guotao Yang, Wei Liu, Ende Yu, Daojin Zhou, Jinjie Fang, Wenxing Chen, Yizhen Chen, Lirong Zheng, Jiangwen Liao, Zeyu Wang, Yaping Li, Hongbin Yang, Guoxin Zhang, Zhongbin Zhuang, Sung-Fu Hung, Changfei Jing, Jun Luo, Lu Bai, Juncai Dong, Hai Xiao, Wen Liu, Yun Kuang, Bin Liu, Xiaoming Sun |
Jazyk: |
angličtina |
Rok vydání: |
2024 |
Předmět: |
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Zdroj: |
Nature Communications, Vol 15, Iss 1, Pp 1-11 (2024) |
Druh dokumentu: |
article |
ISSN: |
2041-1723 |
DOI: |
10.1038/s41467-024-46140-y |
Popis: |
Abstract Seawater electrolysis offers a renewable, scalable, and economic means for green hydrogen production. However, anode corrosion by Cl- pose great challenges for its commercialization. Herein, different from conventional catalysts designed to repel Cl- adsorption, we develop an atomic Ir catalyst on cobalt iron layered double hydroxide (Ir/CoFe-LDH) to tailor Cl- adsorption and modulate the electronic structure of the Ir active center, thereby establishing a unique Ir-OH/Cl coordination for alkaline seawater electrolysis. Operando characterizations and theoretical calculations unveil the pivotal role of this coordination state to lower OER activation energy by a factor of 1.93. The Ir/CoFe-LDH exhibits a remarkable oxygen evolution reaction activity (202 mV overpotential and TOF = 7.46 O2 s−1) in 6 M NaOH+2.8 M NaCl, superior over Cl--free 6 M NaOH electrolyte (236 mV overpotential and TOF = 1.05 O2 s−1), with 100% catalytic selectivity and stability at high current densities (400-800 mA cm−2) for more than 1,000 h. |
Databáze: |
Directory of Open Access Journals |
Externí odkaz: |
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