Coupled Biphase (1T-2H)-MoSe2 on Mold Spore Carbon for Advanced Hydrogen Evolution Reaction

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

6 Scopus Citations
View graph of relations

Author(s)

  • Shengjue Deng
  • Changzhi Ai
  • Mi Luo
  • Bo Liu
  • Yan Zhang
  • Yahao Li
  • Shiwei Lin
  • Guoxiang Pan
  • Qinqin Xiong
  • Xiuli Wang
  • Xinhui Xia
  • Jiangping Tu

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number1901796
Journal / PublicationSmall
Volume15
Issue number30
Online published7 Jun 2019
Publication statusPublished - 26 Jul 2019

Abstract

Performance breakthrough of MoSe2-based hydrogen evolution reaction (HER) electrocatalysts largely relies on sophisticated phase modulation and judicious innovation on conductive matrix/support. In this work the controllable synthesis of phosphate ion (PO43−) intercalation induced-MoSe2 (P-MoSe2) nanosheets on N-doped mold spore carbon (N-MSC) forming P-MoSe2/N-MSC composite electrocatalysts is realized. Impressively, a novel conductive N-MSC matrix is constructed by a facile mold fermentation method. Furthermore, the phase of MoSe2 can be modulated by a simple phosphorization strategy to realize the conversion from 2H-MoSe2 to 1T-MoSe2 to produce biphase-coexisted (1T-2H)-MoSe2 by PO43- intercalation (namely, P-MoSe2), confirmed by synchrotron radiation technology and spherical aberration-corrected TEM (SACTEM). Notably, higher conductivity, lower bandgap and adsorption energy of H+ are verified for the P-MoSe2/N-MSC with the help of density functional theory (DFT) calculation. Benefiting from these unique advantages, the P-MoSe2/N-MSC composites show superior HER performance with a low Tafel slope (≈51 mV dec-1) and overpotential (≈126 mV at 10 mA cm-1) and excellent electrochemical stability, better than 2H-MoSe2/N-MSC and MoSe2/carbon nanosphere (MoSe2/CNS) counterparts. This work demonstrates a new kind of carbon material via biological cultivation, and simultaneously unravels the phase transformation mechanism of MoSe2 by PO43- intercalation.

Research Area(s)

  • hydrogen evolution reaction, mold spore carbon, molybdenum selenide, phase modulation, phosphate ion intercalation

Citation Format(s)

Coupled Biphase (1T-2H)-MoSe2 on Mold Spore Carbon for Advanced Hydrogen Evolution Reaction. / Deng, Shengjue; Ai, Changzhi; Luo, Mi; Liu, Bo; Zhang, Yan; Li, Yahao; Lin, Shiwei; Pan, Guoxiang; Xiong, Qinqin; Liu, Qi; Wang, Xiuli; Xia, Xinhui; Tu, Jiangping.

In: Small, Vol. 15, No. 30, 1901796, 26.07.2019.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review