Platinum Nanoparticle-Supported Electrocatalysts Functionalized by Carbonization of Protic Ionic Liquid and Organic Salts
Platinum Nanoparticle-Supported Electrocatalysts Functionalized by Carbonization of Protic Ionic Liquid and Organic Salts
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DOI：
10.1021/acsaem.8b00539
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发表时间：
2018-06
影响因子：
6.4
通讯作者：
Reiko Izumi;Yueh-Yun Yao;T. Tsuda;T. Torimoto;S. Kuwabata
中科院分区：
文献类型：
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作者：
Reiko Izumi;Yueh-Yun Yao;T. Tsuda;T. Torimoto;S. Kuwabata
利用质子型离子液体(PIL)和有机盐(POS)的碳化过程，将铂纳米颗粒负载的碳电催化剂功能化，用于氧还原反应。用PIL-N，N-二乙基-N-甲基硫酸氢铵([DEMA][HSO4])和POS二苯基硫酸氢铵([DPA][HSO4])制备的催化剂，由于催化剂上的铂纳米粒子与碳化的PIL/POS混合物很好地包裹在一起，因此具有很高的长期稳定性。尽管碳化过程使铂纳米颗粒变大，从而降低了质量活性，但令人惊讶的是，它实现了比商业上可用的铂纳米颗粒电催化剂的四倍以上的高比活性。
A novel approach involving a carbonization process of a protic ionic liquid (PIL) and organic salt (POS) is used to functionalize Pt-nanoparticle-supported carbon electrocatalysts for oxygen reduction reaction. The catalyst prepared using PIL N,N-diethyl-N-methylammonium hydrogen sulfate ([DEMA][HSO4]) and POS diphenylammonium hydrogen sulfate ([DPA][HSO4]) has a high long-term stability of catalytic performance because the Pt nanoparticles on the catalyst are well encapsulated with the carbonized PIL/POS mixture. Although the carbonization process enlarges the Pt nanoparticles and consequently reduces mass activity, surprisingly it realizes a high specific activity more than four times as much as a commercially available Pt nanoparticle electrocatalyst.