Peptide-Assisted 2-D Assembly toward Free-Floating Ultrathin Platinum Nanoplates as Effective Electrocatalysts

Enbo Zhu, Xucheng Yan, Shiyi Wang, Mingjie Xu, Chen Wang, Haotian Liu, Jin Huang, Wang Xue, Jin Cai, Hendrik Heinz, Yujing Li*, Yu Huang

*此作品的通讯作者

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51 引用 (Scopus)

摘要

We demonstrate the 2-D anisotropic formation of ultrathin free-floating Pt nanoplates from the assembly of small nanocrystals using T7 peptide (Ac-TLTTLTN-CONH2). As-formed nanoplates are rich in grain boundaries that can promote their catalytic activities. Furthermore, we demonstrate that a minor number of Pd atoms can selectively deposit on and stabilize the grain boundaries, which leads to enhanced structure stability. The Pd-enhanced Pt polycrystal nanoplates show great oxygen reduction reaction activities with 15.5 times higher specific activity and 13.7 times higher mass activity than current state-of-the-art commercial Pt/C electrocatalysts as well as 2.5 times higher mass activity for hydrogen evolution reaction compared with Pt/C.

源语言英语
页(从-至)3730-3736
页数7
期刊Nano Letters
19
6
DOI
出版状态已出版 - 12 6月 2019

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