Facile synthesis of MoS2/N-doped macro-mesoporous carbon hybrid as efficient electrocatalyst for hydrogen evolution reaction. (12th April 2018)

• Record Type: Journal Article
• Authors: Chen, Xiaoling; Zhang, Kangning; An, Zhenzhen; Wang, Lina; Wang, Yan; Sun, Sen; Guo, Tong; Zhang, Dongxia; Xue, Zhonghua; Zhou, Xibin; Lu, Xiaoquan
• Is Part Of: International journal of hydrogen energy. Volume 43:Number 15(2018)
• Page Start: 7326
• Page End: 7337
• Publication Date: 2018-04-12
• Subjects: Molybdenum disulfide -- N-doped macro-mesoporous carbon -- Solvothermal method -- Hydrogen evolution reaction; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2018.02.163
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: A novel three-dimensional (3D) hybrid consisting of molybdenum disulfide nanosheets (MoS2 ) uniformly bound at N-doped macro-mesoporous carbon (N-MMC) surface was fabricated by the solvothermal method. The resulting MoS2 /N-MMC hybrid possesses few-layer MoS2 nanosheets structure with abundant edges of MoS2 exposed as active sites for hydrogen evolution reaction (HER), in sharp contrast to large aggregated MoS2 nanoflowers without N-MMC. The high electric conductivity of N-MMC and an abundance of exposed edges on the MoS2 nanosheets make the hybrid excellent electrocatalytic performance with a low onset potential of 98 mV, a small Tafel slope of 52 mV/decade, and a current density of 10 mA cm −2 at the overpotential of 150 mV. Moreover, the MoS2 /N-MMC hybrid exhibits outstanding electrochemical stability and structural integrity owing to the strong bonding between MoS2 nanosheets and N-MMC. Graphical abstract: Highlights: A 3D hybrid of N-doped macro-mesoporous carbon decorated with MoS2 nanosheets is fabricated by a hydrothermal method. The conductivity of MoS2 /N-MMC is increased after the participation of N-MMC. MoS2 /N-MMC may expose the more active sites for HER. MoS2 /N-MMC demonstrates excellent HER activity and excellent stability.