Wang Shuai, Jang Haeseong, Wang Jia, Wu Zexing, Liu Xien, Cho Jaephil
State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao, 266042, P.R. China.
Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-798, South Korea.
ChemSusChem. 2019 Feb 21;12(4):830-838. doi: 10.1002/cssc.201802909. Epub 2019 Jan 23.
It remains a tremendous challenge to develop a low-cost, earth-abundant, and efficient catalyst with multifunctional activities for the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and oxygen reduction reaction (ORR). Herein, a facile and scalable avenue was developed to prepare amorphous Co-P/Co-N-C supported on N, P co-doped porous carbon (Co-P/Co-N-C/NPC) with a large specific surface area (1462.9 m g ) and abundant reactive sites including Co-P, Co-N and NPC. The prepared electrocatalyst exhibits outstanding catalytic performance for HER (η=234 mV at 10 mA cm ), OER (η=374 mV at 10 mA cm ), and ORR (E =0.89 V, vs. reversible hydrogen electrode). Benefiting from the excellent HER performance and outstanding OER activity, the Co-P/Co-N-C/NPC delivers a current density of 10 mA cm for overall water splitting at a cell voltage of 1.59 V, which is comparable with the IrO -Pt/C couple electrode.
开发一种用于析氢反应（HER）、析氧反应（OER）和氧还原反应（ORR）的具有多功能活性的低成本、地球上储量丰富且高效的催化剂仍然是一项巨大的挑战。在此，我们开发了一种简便且可扩展的方法来制备负载在N、P共掺杂多孔碳（Co-P/Co-N-C/NPC）上的非晶态Co-P/Co-N-C，其具有大的比表面积（1462.9 m² g⁻¹）以及包括Co-P、Co-N和NPC在内的丰富活性位点。所制备的电催化剂对HER（在10 mA cm⁻²时η = 234 mV）、OER（在10 mA cm⁻²时η = 374 mV）和ORR（E = 0.89 V，相对于可逆氢电极）表现出优异的催化性能。得益于出色的HER性能和优异的OER活性，Co-P/Co-N-C/NPC在1.59 V的电池电压下实现了10 mA cm⁻²的全水解电流密度，这与IrO₂-Pt/C双电极相当。
