Special NaBH 4 hydrolysis achieving multiple-surface-modifications promotes the high-throughput water oxidation of CoN nanowire arrays

• Published in: Dalton transactions : an international journal of inorganic chemistry 2023-07, Vol.52 (28), p.9714-9720
• Main Authors: Liu, Sirui, Shi, Yuxin, Xu, Lingling, Zhan, Weican, Chen, Meixi, Pan, Xiaoyue, Yao, Yuqing, Cai, Jiajie, Zhang, Mingyi, Ma, Xinzhi
• Format: Article
• Language: English
• ISSN: 1477-9226; 1477-9234
• DOI: 10.1039/d3dt01339a

Designing an excellent OER catalyst in an alkaline environment is severe yet essential for industrial H application under the electrochemical technique. This study has achieved multiple modifications on CoN nanowires, the classic OER catalyst, a facile room-temperature NaBH spontaneous hydrolysis. This facile process simultaneously generates oxygen vacancies and robust BN species. It wraps hydrophilic BO motifs on the OER response CoN nanowires, producing OER active Co-N-B species, increasing active numbers and guaranteeing structural stability. It suggests that a low NaBH concentration (0.1 mol L ) treatment endows CoN /CC with excellent OER performance and robust structure, which can drive a current density of 50 mA cm with only 325 mV overpotentials with more than 24 hours' durability. Even, the catalyst can drive 1000 mA cm around 480 mV overpotential. This study allows a novel strategy for designing high-performance OER catalysts.