Oxygen reduction electrocatalysts sophisticated by using Pt nanoparticle-dispersed ionic liquids with electropolymerizable additives
Oxygen reduction electrocatalysts sophisticated by using Pt nanoparticle-dispersed ionic liquids with electropolymerizable additives
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DOI：
10.1039/c8ta03465f
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发表时间：
2018-07-07
影响因子：
11.9
通讯作者：
Kuwabata, Susumu
中科院分区：
文献类型：
--
作者：
Izumi, Reiko;Yao, Yu;Kuwabata, Susumu
固态的质子有机盐（POS）二苯硫酸氢铵（[DPA][HSO 4]）的电聚合反应在N-2饱和的0.1M HCl O 4水溶液中进行，并且毫无困难地形成导电聚（二苯胺）。在Pt纳米颗粒改性的碳电催化剂上的Pt纳米颗粒和碳载体之间的薄离子液体（IL）层处也观察到该反应，所述Pt纳米颗粒改性的碳电催化剂使用N，N-二乙基-N-甲基硫酸氢铵（[DEMA][HSO 4]）质子IL与[DPA][HSO 4] POS制备。类似的Pt纳米颗粒电催化剂使用不同的电聚合添加剂，包括硫酸氢苯铵（[PhNH 3][HSO 4]）。在IL层的局部电聚合反应可以赋予氧还原电催化剂更好的电化学表面积和质量活性保留率。所得电催化剂的性能取决于电可聚合物质。
The electropolymerization reaction of protic organic salt (POS) diphenylammonium hydrogen sulfate ([DPA][HSO4]) in the solid state proceeds in a N-2-saturated 0.1 M HClO4 aqueous solution, and conductive poly(diphenylamine) is formed without difficulty. This reaction has also been observed at the thin ionic liquid (IL) layer between Pt nanoparticles and carbon support on Pt nanoparticle-modified carbon electrocatalysts prepared using a N,N-diethyl-N-methylammonium hydrogen sulfate ([DEMA][HSO4]) protic IL with a [DPA][HSO4] POS. Similar Pt nanoparticle electrocatalysts are fabricated using different electropolymerizable additives, including phenylammonium hydrogen sulfate ([PhNH3][HSO4]). A local electropolymerization reaction at the IL layer can confer a better electrochemical surface area and mass activity retention rates on oxygen reduction electrocatalysts. The performance of the resulting electrocatalysts is dependent on the electropolymerizable species.