Growth of radial microspheres of Ni-Co-O at porous Ti and its phosphorization for high efficient hydrogen evolution. (1st January 2018)

• Record Type: Journal Article
• Authors: Zhou, Mao; Liu, Ya; Fa, Dejuan; Qian, Lihong; Miao, Yuqing
• Is Part Of: Electrochimica acta. Volume 259(2018)
• Page Start: 329
• Page End: 337
• Publication Date: 2018-01-01
• Subjects: Ni-Co-P -- Ni-Co-P -- Radial microspheres -- Phosphorization; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2017.11.001
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: The phosphorized radial microspheres of Ni-Co-O on a porous Ti plate (Ni-Co-O/Ti) were fabricated for the electrocatalysis of hydrogen evolution reaction (HER). They are characterized by SEM, TEM, XRD, XPS and BET. The Ni-Co-P/Ti exhibited the low onset potential of −100 mV, achieving the current densities of 10 and 50 mA/cm 2 at the overpotentials of 20 and 80 mV, respectively. The Tafel slope is approximately 43 mV/dec, which is close to that of commercial Pt catalyst and lower than many previous reports. On the other hand, the Ni-Co-O/Ti exhibited high electrocatalytic oxidation of glucose with a relatively low onset potential at 0.29 V, where glucose was introduced to decrease the cell potential of water splitting. Graphical abstract: