Yang Xinran, Shu Yasuhiro, Takada Ryuji, Taniguchi Yurika, Miyake Koji, Uchida Yoshiaki, Nishiyama Norikazu
Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan.
Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University Suita, Osaka, 565-0871, Japan.
Chem Asian J. 2023 Oct 17;18(20):e202300534. doi: 10.1002/asia.202300534. Epub 2023 Sep 13.
The manufacture of efficient and low-cost hydrogen evolution reaction (HER) catalysts is regarded as a critical solution to achieve carbon neutrality. Herein, we developed an economical method to synthesize a CoP-anchored N-doped carbon catalyst via one-step pyrolysis using inexpensive starting materials (cobalt ion salt, phytic acid, and glycine). The size of the CoP nanoparticles was controlled by adjusting the Co/P ratio of the catalysts. Nanoscale CoP particles with adequate exposure to active sites were uniformly anchored on the surface of the conductive nitrogen-doped carbon substrate, ensuring the rapid transfer of electrons and species. When Co/P=0.89, the as-made catalyst exhibited outstanding HER activity, with an extraordinarily low overpotential of 202 mV at 10 mA cm and long-term stability.
高效低成本析氢反应（HER）催化剂的制备被视为实现碳中和的关键解决方案。在此，我们开发了一种经济的方法，使用廉价的起始原料（钴离子盐、植酸和甘氨酸）通过一步热解合成了一种CoP锚定的氮掺杂碳催化剂。通过调节催化剂的Co/P比来控制CoP纳米颗粒的尺寸。具有充分活性位点暴露的纳米级CoP颗粒均匀地锚定在导电氮掺杂碳基底表面，确保电子和物质的快速转移。当Co/P = 0.89时，制备得到的催化剂表现出优异的HER活性，在10 mA cm下过电位极低，仅为202 mV，且具有长期稳定性。
