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PtM/M x B y (M=Ni, Co, Fe) Heterostructured Nanobundles as Advanced Electrocatalyst for Hydrogen Evolution Reaction
Author(s) -
Yuan Mengyu,
Xu Hui,
Wang Cheng,
Wang Yong,
Wang Yuan,
Wang Xiaomei,
Du Yukou
Publication year - 2021
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202101874
Subject(s) - overpotential , electrocatalyst , catalysis , materials science , electrochemistry , nanomaterial based catalyst , chemical engineering , boron , current density , hydrogen , nanotechnology , inorganic chemistry , chemistry , nanoparticle , electrode , biochemistry , physics , organic chemistry , quantum mechanics , engineering
Optimizing the electronic and synergistic effect of hybrid electrocatalysts based on Pt and Pt‐based nanocatalysts is of tremendous importance towards a superior hydrogen evolution performance under both acidic and alkaline conditions. However, developing an ideal Pt‐based hydrogen evolution reaction (HER) electrocatalyst with moderated electronic structure as well as strong synergistic effect is still a challenge. Herein, we fabricated boron (B)‐doped PtNi nanobundles by a two‐step method using NaBH 4 as the boron source to obtain PtNi/Ni 4 B 3 heterostructures with well‐defined nanointerfaces between PtNi and Ni 4 B 3 , achieving an enhanced catalytic HER performance. Especially, the PtNi/Ni 4 B 3 nanobundles (PtNi/Ni 4 B 3 NBs) can deliver a current density of 10 mA cm −2 at the overpotential of 14.6 and 26.5 mV under alkaline and acidic media, respectively, as well as outstanding electrochemical stability over 40 h at the current density of 10 mA cm −2 . Remarkably, this approach is also universal for the syntheses of PtCo/Co 3 B and PtFe/Fe 49 B with outstanding electrocatalytic HER performance.