Fabrication of hierarchical SrTiO3@MoS2 heterostructure nanofibers as efficient and low-cost electrocatalysts for hydrogen-evolution reactions

Lun Zhang; Juanjuan Yin; Kuo Wei; Bingfan Li; Tifeng Jiao; Yan Chen; Jingxin Zhou; Qiuming Peng

doi:10.1088/1361-6528/ab70ff

Fabrication of hierarchical SrTiO₃@MoS₂ heterostructure nanofibers as efficient and low-cost electrocatalysts for hydrogen-evolution reactions

Nanotechnology. 2020 May 15;31(20):205604. doi: 10.1088/1361-6528/ab70ff. Epub 2020 Jan 28.

Authors

Lun Zhang¹, Juanjuan Yin, Kuo Wei, Bingfan Li, Tifeng Jiao, Yan Chen, Jingxin Zhou, Qiuming Peng

Affiliation

¹ State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, People's Republic of China. Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, People's Republic of China.

PMID: 31995537
DOI: 10.1088/1361-6528/ab70ff

Abstract

The construction of low-cost, high-performance electrocatalysts instead of platinum catalysts is critical to solving the energy crisis. Here, using simple electrospinning and hydrothermal methods, new MoS₂ nanosheets on SrTiO₃ nanofibers (NFs) and 2D SrTiO₃@MoS₂ heterostructure NFs are synthesized. In addition, SrTiO₃@MoS₂ heterostructure NFs are compared with bare SrTiO₃ NFs and MoS₂ nanosheets. Importantly, the prepared SrTiO₃@MoS₂ heterostructure shows better hydrogen-evolution reaction performance than other MoS₂-based electrocatalysts with an overpotential of 165 mV at 10 mA cm^-2, a Tafel slope of 81.41 mV dec^-1, and long-term electrochemical durability of 3000 cycles. Therefore, the present work strongly demonstrates the positive synergy between SrTiO₃ NFs and layered MoS₂, and also provides a strategy for preparing low-cost and high-activity water-decomposition electrocatalysts.