논문 해외 국제전문학술지(SCI급) Boosting electrochemical stability and hydrogen evolution activity of small-Pt nanoparticles by rational decoration on Cu nanowires composited with carbon black
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2023-06
- 학술지명 INORGANIC CHEMISTRY COMMUNICATIONS
- 발행처명 ELSEVIER
- 발행국가 해외
- 논문언어 외국어
홈페이지논문 초록 (Abstract)
A Copper nanowire (Cu NW) decorated small-Pt nanoparticles composited with carbon black (Cu-x@Pt-y NW/C) is rationally designed by a hydrothermal route, in which, Cu NWs act as a backbone core for accelerating the electron transfer rate while carbon black acts as a support to aid a uniform distribution of Cu-x@Pt-y NW resulting in enlarging the electrochemically active surface area of Cu-x@Pt-y NW/C catalysts. The composited material (Cu-x@Pt-y NW/C) demonstrated the boosting of both electrocatalytic activity and durability towards hydrogen evolution reaction. The 40-Cu-3@Pt-2 NW/C catalyst (containing 17 wt% Pt) requires just only a potential of 32 mV to produce the current density at 10 mA.cm(-2) which is the same potential value (30 mV) as a benchmark-commercial Pt/C catalyst (20 wt% Pt). Especially, 40-Cu-3@Pt-2 NW/C exhibits the lowest Tafel slope of 24.7 mV.dec(-1), lower by 8.8 % than that of commercial Pt/C catalyst (27.1 mV.dec(-1)). The 40Cu(3)@Pt-2 NW/C catalyst shows excellent long-term stability with an undeviating current density over 22 h (chronoamperometry measurement tested at current density of 20 mA.cm(-2)) compared to Pt/C catalyst.