Hydrogen has emerged as a promising clean energy carrier,and the development of cost-effective electrocatalysts that retain high activity under acidic media is crucial for advancing proton exchange membrane water elec...Hydrogen has emerged as a promising clean energy carrier,and the development of cost-effective electrocatalysts that retain high activity under acidic media is crucial for advancing proton exchange membrane water electrolysis(PEMWE).Here,we propose the SiO_(x)/RuCoO_(x)nanoparticles(SiO_(x)/RuCoO_(x)NPs)as bifunctional electrocatalysts for efficient hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)under acidic media.The Ru-O-Si interface,along with charge transfer between Ru and Co,modulates the d-band electronic structure of the Ru site,achieving superior performance with a low HER overpotential of 18 mV at 10 mA cm^(-2)and a turnover frequency of 8.86 H_(2)s^(-1)at 100 mV.For OER,the overpotential is 217 mV at 10 mA cm^(-2).SiO_(x)/RuCoO_(x)NPs exhibit a cell voltage of 1.482 V at 10 mA cm^(-2)with an energy conversion efficiency of 83.0%.This work takes a significant step toward achieving efficient and cost-effective bifunctional electrocatalysts for water splitting,playing a critical role in the transition to clean energy technologies.展开更多
基金financially supported by the National Natural Science Foundation of China(No.61921005)the Key R&D Project of Nantong(No.GZ2024004)
文摘Hydrogen has emerged as a promising clean energy carrier,and the development of cost-effective electrocatalysts that retain high activity under acidic media is crucial for advancing proton exchange membrane water electrolysis(PEMWE).Here,we propose the SiO_(x)/RuCoO_(x)nanoparticles(SiO_(x)/RuCoO_(x)NPs)as bifunctional electrocatalysts for efficient hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)under acidic media.The Ru-O-Si interface,along with charge transfer between Ru and Co,modulates the d-band electronic structure of the Ru site,achieving superior performance with a low HER overpotential of 18 mV at 10 mA cm^(-2)and a turnover frequency of 8.86 H_(2)s^(-1)at 100 mV.For OER,the overpotential is 217 mV at 10 mA cm^(-2).SiO_(x)/RuCoO_(x)NPs exhibit a cell voltage of 1.482 V at 10 mA cm^(-2)with an energy conversion efficiency of 83.0%.This work takes a significant step toward achieving efficient and cost-effective bifunctional electrocatalysts for water splitting,playing a critical role in the transition to clean energy technologies.
