Zhao Changhao, Wei Fen, Lv Haolin, Zhao Dengke, Wang Nan, Li Ligui, Li Nanwen, Wang Xiufang
Guangdong Engineering & Technology Research Center of Topic Precise Drug Delivery System, School of Pharmacy, Guangdong Pharmaceutical University, 280 Waihuan Dong Road, University Town, Guangzhou 510006, China.
Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China.
Materials (Basel). 2021 Mar 17;14(6):1473. doi: 10.3390/ma14061473.
It remains an urgent demand and challenging task to design and fabricate efficient, stable, and inexpensive catalysts toward sustainable electrochemical water splitting for hydrogen production. Herein, we explored the use of Fe(III) ion-assisted aniline polymerization strategy to embed bimetallic CoFeP nanospheres into the nitrogen-doped porous carbon framework (referred CoFeP-NC). The as-prepared CoFeP-NC possesses excellent hydrogen evolution reaction (HER) performance with the small overpotential (η) of 81 mV and 173 mV generated at a current density of 10 mA cm in acidic and alkaline media, respectively. Additionally, it can also efficiently catalyze water oxidation (OER), which shows an ideal overpotential (η) of 283 mV in alkaline electrolyte (pH = 14). The remarkable catalytic property of CoFeP-NC mainly stems from the strong synergetic effects of CoFeP nanospheres and carbon network. On the one hand, the interaction between the two can make better contact between the electrolyte and the catalyst, thereby providing a large number of available active sites. On the other hand, it can also form a network to offer better durability and electrical conductivity (8.64 × 10 S cm). This work demonstrates an efficient method to fabricate non-noble electrocatalyst towards overall water splitting, with great application prospect.
设计和制造高效、稳定且廉价的催化剂用于可持续电化学水分解制氢仍然是一项紧迫的需求和具有挑战性的任务。在此，我们探索了使用铁（III）离子辅助苯胺聚合策略将双金属CoFeP纳米球嵌入氮掺杂多孔碳框架（简称CoFeP-NC）。所制备的CoFeP-NC具有优异的析氢反应（HER）性能，在酸性和碱性介质中，在电流密度为10 mA cm时分别产生81 mV和173 mV的小过电位（η）。此外，它还能有效催化水氧化（OER），在碱性电解质（pH = 14）中显示出283 mV的理想过电位（η）。CoFeP-NC卓越的催化性能主要源于CoFeP纳米球与碳网络之间强烈的协同效应。一方面，两者之间的相互作用可使电解质与催化剂之间实现更好的接触，从而提供大量可用的活性位点。另一方面，它还能形成网络以提供更好的耐久性和电导率（8.64 × 10 S cm）。这项工作展示了一种制备用于全水分解的非贵金属电催化剂的有效方法，具有广阔的应用前景。
