Wu Shengye, Chen Ding, Li Shang, Zeng Yuting, Wang Tao, Zhang Jian, Yu Jun, Mu Shichun, Tang Haolin
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China.
Key Laboratory of Fuel Cell Technology of Hubei Province, Wuhan University of Technology, Wuhan, 430070, China.
Adv Sci (Weinh). 2023 Dec;10(35):e2304179. doi: 10.1002/advs.202304179. Epub 2023 Oct 25.
Developing cost-efficient bifunctional water splitting catalysts is crucial for sustainable hydrogen energy applications. Herein, ruthenium (Ru)-incorporated and phosphorus (P)-doped nickel molybdate (Ru-NiMoO(P) ) nanosheet array catalysts are synthesized. Due to the synergy of Ru clusters and NiMoO(P) by the modulated electronic structure and the rich active sites, impressively, Ru-NiMoO(P) exhibits superior OER (194 mV @ 50 mA cm ) and HER (24 mV @ 10 mA cm ) activity in alkaline media, far exceeding that of commercial Pt/C and RuO catalysts. Meanwhile, as bifunctional catalyst, to drive the overall water splitting at the current density of 10 mA cm , Ru-NiMoO(P) requires only 1.45 V and maintaining stable output for 100 h. Furthermore, Ru-NiMoO(P) also possesses excellent capability for seawater electrolysis hydrogen production. Moreover, the successful demonstration of wind and solar hydrogen production systems provide the feasibility of the ultra-low Ru loading catalyst for large-scale hydrogen production in the future.
开发具有成本效益的双功能水分解催化剂对于可持续氢能应用至关重要。在此,合成了掺钌(Ru)和磷(P)掺杂的钼酸镍(Ru-NiMoO(P))纳米片阵列催化剂。由于Ru团簇与NiMoO(P)之间通过调制电子结构和丰富的活性位点产生协同作用,令人印象深刻的是,Ru-NiMoO(P)在碱性介质中表现出优异的析氧反应(在50 mA cm时为194 mV)和析氢反应(在10 mA cm时为24 mV)活性,远远超过商业Pt/C和RuO催化剂。同时,作为双功能催化剂,为了在10 mA cm的电流密度下驱动整体水分解,Ru-NiMoO(P)仅需要1.45 V,并能保持100小时的稳定输出。此外,Ru-NiMoO(P)还具有出色的海水电解制氢能力。此外,风能和太阳能制氢系统的成功示范为未来大规模制氢的超低Ru负载催化剂提供了可行性。