过电位
化学
电化学
兴奋剂
吸附
纳米颗粒
Atom(片上系统)
氢原子
催化作用
氢
物理化学
纳米技术
电极
材料科学
有机化学
光电子学
烷基
嵌入式系统
计算机科学
作者
Daiya Kobayashi,Hirokazu Kobayashi,Dongshuang Wu,Shinya Okazoe,Kohei Kusada,Tomokazu Yamamoto,Takaaki Toriyama,Shuichi Matsumura,Shogo Kawaguchi,Yoshiki Kubota,Susan Meñez Aspera,Hiroshi Nakanishi,S. Arai,Hiroshi Kitagawa
摘要
We report novel PtW solid-solution nanoparticles (NPs) produced through electrochemical cleaning of core/shell PtW@WO3 NPs. The resulting PtW NPs achieved a record hydrogen evolution reaction (HER) performance as a class of Pt-based solid-solution alloys. A current density of 10 mA cm-2 was reached with an overpotential of 19.4 mV, which is significantly lower than that of a commercial Pt catalyst (26.3 mV). The PtW NPs also exhibited long-term stability. Theoretical calculations revealed that negatively charged Pt atoms adjacent to a W atom provide favorable hydrogen adsorption energies for the HER, realizing significantly enhanced HER activity.
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