电化学沉积在掺杂杂原子的石墨烯载体上的铂纳米颗粒作为酸性介质中 ORR 的电催化剂

IF 3.1 4区工程技术 Q2 ELECTROCHEMISTRY

Journal of The Electrochemical Society Pub Date : 2024-09-10 DOI:10.1149/1945-7111/ad7296

Raegan Chambers, Sajid Hussain, Jekaterina Kozlova, Kaupo Kukli, Peeter Ritslaid, Arvo Kikas, Vambola Kisand, Heiki Erikson and Kaido Tammeveski

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引用次数: 0

摘要

利用计时沉积法，通过电化学沉积将铂纳米粒子（PtNPs）附着在不同的单杂原子掺杂（N、S、P 和 B）和双杂原子掺杂（N、B 和 N、P）石墨烯纳米片上，从而使 PtNPs 强力附着在支撑表面。研究了支撑材料对 PtNPs 在酸性介质中氧还原反应（ORR）电催化活性的影响。掺硼石墨烯支持的 PtNPs 表现出最高的比活性（1.26 mA cm-2），而氮和硼双杂原子掺杂石墨烯支持的 PtNPs 在 0.9 V 与可逆氢电极的电压下表现出最高的质量活性（0.70 A mg-1）。ORR 的动力学因掺杂剂的不同而有很大差异，因此得出结论：石墨烯支撑材料的杂原子掺杂会影响 PtNPs 对 ORR 的电催化活性。

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Pt Nanoparticles Electrochemically Deposited onto Heteroatom-Doped Graphene Supports as Electrocatalysts for ORR in Acid Media

Platinum nanoparticles (PtNPs) are attached to different single heteroatom-doped (N, S, P, and B) and dual heteroatom-doped (N, B and N, P) graphene nanosheets via electrochemical deposition using the chronoamperometric method, which allowed for strong attachment of the PtNPs onto the support surface. The effect of the support material on the electrocatalytic activity of the PtNPs on the oxygen reduction reaction (ORR) in acidic media is examined. The PtNPs supported on boron-doped graphene exhibit the highest specific activity (1.26 mA cm−2), and the PtNPs supported on nitrogen and boron dual heteroatom-doped graphene exhibit the highest mass activity (0.70 A mg−1) at 0.9 V vs reversible hydrogen electrode. The kinetics of the ORR vary significantly depending on the dopants, thus concluding that the heteroatom doping of the graphene support material affects the electrocatalytic activity of PtNPs toward the ORR.

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来源期刊

Journal of The Electrochemical Society 工程技术-电化学

CiteScore

7.20

自引率

12.80%

发文量

1369

审稿时长

1.5 months

期刊介绍： The Journal of The Electrochemical Society (JES) is the leader in the field of solid-state and electrochemical science and technology. This peer-reviewed journal publishes an average of 450 pages of 70 articles each month. Articles are posted online, with a monthly paper edition following electronic publication. The ECS membership benefits package includes access to the electronic edition of this journal.