Highly crystalline Ni-doped FeP/carbon hollow nanorods as all-pH efficient and durable hydrogen evolving electrocatalysts

Science Advances
Xue Feng LuXiong Wen David Lou

Abstract

Herein, we report the synthesis of uniform hollow nanorods of Ni-doped FeP nanocrystals hybridized with carbon as electrocataysts for the electrocatalytic hydrogen evolution reaction (HER). These hollow nanorods are prepared based on the etching and coordination reaction between metal-organic frameworks and phytic acid, followed by a pyrolysis process. Benefiting from the abundant active sites, the improved mass and charge transport capability, the optimized Ni-doped FeP/C hollow nanorods exhibit excellent HER activities for achieving a current density of 10 mA cm-2 at an overpotential of 72, 117, and 95 mV in acidic, neutral, and alkaline media, respectively, as well as superior stability. X-ray photoelectron spectroscopy and basic density functional theory calculations suggest that the improved HER activity originates from the synergistic modulation of the active components, structural and electronic properties. This protocol provides a general and friendly strategy to construct hollow phosphides for energy-related applications.

References

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Citations

Nov 9, 2019·Chemistry : a European Journal·Xiaomin MaBin Zhang
Sep 19, 2019·Angewandte Chemie·Xue Feng LuXiong Wen David Lou
May 19, 2020·Advanced Materials·Zhe LiXi-Wen Du
Oct 31, 2020·Advanced Materials·Lang MaLi Qiu
Dec 16, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Yunmei DuLei Wang
Feb 23, 2021·Chemical Communications : Chem Comm·Kaifa LuXin-Yao Yu
Dec 15, 2020·Angewandte Chemie·Huabin ZhangXiong Wen David Lou
Mar 23, 2021·Advanced Materials·Ben ZhangChong Cheng

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Methods Mentioned

BETA
scanning
transmission electron microscopy
x-ray photoelectron spectroscopy
atomic emission spectroscopy

Software Mentioned

Quantum ESPRESSO

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