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Carbon-based supports for the electrocatalysis under industrially relevant conditions
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作者 Xue Yang xianrui gu +4 位作者 Yang Song guolin Hou Cheng Wang Lichen Liu Wei Lin 《Science China Chemistry》 SCIE EI CAS CSCD 2024年第4期1051-1055,共5页
1 Introduction.Carbon materials are ideal catalyst supports for functional metal components due to their appropriate physicochemical characteristics,such as high surface areas,tunable pore structures,variable morpholo... 1 Introduction.Carbon materials are ideal catalyst supports for functional metal components due to their appropriate physicochemical characteristics,such as high surface areas,tunable pore structures,variable morphologies and versatile surface properties based on chemical modifications,low cost and facile preparations from diverse precursors[1,2]. 展开更多
关键词 VERSATILE FACILE supports
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Improving the water electrolysis performance by manipulating the generated nano/micro-bubbles using surfactants 被引量:2
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作者 Houpeng Wang Zhaoxiang Xu +4 位作者 Wei Lin Xue Yang xianrui gu Wei Zhu Zhongbin Zhuang 《Nano Research》 SCIE EI CSCD 2023年第1期420-426,共7页
The impeded mass transfer rate by on-site-generated gas bubbles at both cathode and anode dramatically reduces the energy conversion efficiency of the proton exchange membrane water electrolyzer(PEMWE).Herein,we repor... The impeded mass transfer rate by on-site-generated gas bubbles at both cathode and anode dramatically reduces the energy conversion efficiency of the proton exchange membrane water electrolyzer(PEMWE).Herein,we report a surfactant-assistant method to accelerate the nano/micro-bubble detachment and the mass transfer rate by reducing the surface tension,resulting in an increase in overall efficiency.Four kinds of surfactants are studied in this work.Only potassium perfluorobutyl sulfonate(PPFBS),which has the structural similarity to Nafion,shows a significant promotion of activity and stability for both hygrogen evolution reaction(HER)and oxygen evolution reaction(OER)in the acidic medium at the high current density region.The HER overpotential at 0.1 A·cm−2 decreased 22%,and the current density at−0.4 V increased 31%by adding PPFBS.The promotion of overall efficiency by PPFBS on a homemade PEMWE was also proven.The reduced surface tension and electrostatic repulsion were the probable origins of the accelerated bubble detachment. 展开更多
关键词 proton exchange membrane water electrolysis BUBBLE OVERPOTENTIAL SURFACTANT electrostatic repulsion
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