Durability and Activity Tunable Pt/Graphene Catalyst for Oxygen Reduction Reactions

Piao Zhang; Wenmao Tu; Rui Wang; Shichang Cai; Jing Wu; Qiong Yan; Hongfei Pan; Haining Zhang; Haolin Tang

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Durability and Activity Tunable Pt/Graphene Catalyst for Oxygen Reduction Reactions

机译：耐用性和活性可调节的Pt /石墨烯催化氧还原反应

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We report durability and activity tunable Pt/graphene with micropores controllable graphene as thesupports for oxygen reduction reactions. The graphene supports are prepared by thermal reduction offew-layered graphite oxide in hydrogen atmosphere. Oxygen atoms emission and carbon atomsrearrangement occur during the thermal reduction at variable temperature, thus form tunablemicropores and graphitization degree in the graphene supports. Symmetrical dispersion of Ptnanoparticles with an medial diameter of 2.3 nm loaded on stable graphene supports contribute to asupernal electrochemical surface area, enhanced electrochemical catalytic activity and durabilitytoward oxygen reduction reactions compared to mercantile Pt/C catalyst. The results demonstrate thatdurability and activity tunable Pt/graphene is a promising electrocatalyst for oxygen reduction in fuelcells.

机译：我们报道了具有微孔可控石墨烯作为氧还原反应的载体的耐久性和活性可调的Pt /石墨烯。石墨烯载体是通过在氢气气氛中将还原层状的氧化石墨热还原而制备的。在可变温度下的热还原过程中会发生氧原子的排放和碳原子的重排，从而在石墨烯载体中形成可调节的微孔和石墨化程度。与商业化的Pt / C催化剂相比，负载在稳定石墨烯载体上的中间直径为2.3 nm的铂纳米粒子的对称分散有助于形成卓越的电化学表面积，增强的电化学催化活性和对氧还原反应的耐久性。结果表明，耐久性和活性可调的Pt /石墨烯是一种有前途的燃料电池氧还原电催化剂。

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《International Journal of Electrochemical Science》 |2016年第12期|共16页
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Piao Zhang; Wenmao Tu; Rui Wang; Shichang Cai; Jing Wu; Qiong Yan; Hongfei Pan; Haining Zhang; Haolin Tang;
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2. Ultrafine Pt Nanoparticles Stabilized by MoS2/N-Doped Reduced Graphene Oxide as a Durable Electrocatalyst for Alcohol Oxidation and Oxygen Reduction Reactions [J] . Ramakrishnan S., Karuppannan Mohanraju, Vinothkannan Mohanraj, ACS applied materials & interfaces . 2019,第13期

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4. Preparation of PtSn/C electrocatalysts with high activity and long-term durability toward oxygen reduction reaction by alcohol-reduction process [C] . Bing-Jian Su, Kuan-Wen Wang, Chung-Jen Tseng 6th international conference on environmental catalysis : Abstract book . 2010

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6. Modulating Catalytic Activity and Durability of PtFe Alloy Catalysts for Oxygen Reduction Reaction Through Controlled Carbon Shell Formation [O] . Youngjin Kim, A. Anto Jeffery, Jiho Min, 2019

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8. Electrochemical Investigations on Graphene and Lithium Phthalocyanine as Catalysts for Reversible Oxygen Reduction Reaction in Li-O2 Cells. [R] . Nookala, M. 2015

机译：石墨烯和锂酞菁作为Li-O2细胞可逆氧还原反应催化剂的电化学研究。

Durability and Activity Tunable Pt/Graphene Catalyst for Oxygen Reduction Reactions

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