Nanoreactor of Nickel-Containing Carbon-Shells as Oxygen Reduction Catalyst.

Li, Bing; Nam, Honggi; Zhao, Jiong; Chang, Jian; Lingappan, Niranjanmurthi; Yao, Fei; Lee, Tae Hoon; Lee, Young Hee · Adv Mater · 2017

basic_science · Level V

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Abstract

A Pt-free nanoreactor, consisting of N-doped hollow carbon nanocapsules with encapsulated Ni nanoparticles, is developed for high-performance oxygen reduction reaction (ORR) catalyst. The nanoreactor effect improves its catalytic activity for ORR mainly in a 4e<sup>-</sup> pathway. The presence of Ni nanoparticles within the nanoreactor significantly enhances the stability with a current retention of 90% after 40 h.