naa a22 4500 510820913 CHVBK 20180411083531.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s11814-013-0085-9 doi (NATIONALLICENCE)springer-10.1007/s11814-013-0085-9 Electrochemical performance of Ni/TiO2 hollow sphere in proton exchange membrane water electrolyzers system [Elektronische Daten] [Jayeeta Chattopadhyay, Rohit Srivastava, Prem Srivastava] This work presents the electrocatalytic evaluation of Ni/TiO2 hollow sphere materials in PEM water electrolysis cell. All the electrocatalysts have shown remarkably enhanced electrocatalytic properties in comparison with their performance in aqueous electrolysis cell. According to cyclic voltammetric results, 0.36 A cm−2 peak current density has been exhibited in hydrogen evolution reaction (HER) from 30 wt% Ni/TiO2 electrocatalyst. 15 wt% Ni-doped titania sample has shown the best result in oxygen evolution reaction (OER) with the anodic peak current density of 0.3 A cm−2. In the anodic polarization curves, the performance of 15 wt% Ni/TiO2 hollow sphere electrocatalyst was evaluated up to 140 mA cm−2 at comparatively lower over-potential value. 20 wt% Ni/TiO2 hollow sphere electrocatalyst has also shown electrochemical stability in PEM water electrolyzer for 48 h long analysis. The comparative electrocatalytic behavior of hollow spherical materials with non-sphericals is also presented, which clearly shows the influence of hollow spherical structure in greater electrocatalytic activity of the materials. The physical characterization of all the hollow spherical materials is presented in this work, which has confirmed their better electrochemical behavior in PEM water electrolyzer. Korean Institute of Chemical Engineers, Seoul, Korea, 2013 Titania Hollow Sphere nationallicence PEM Water Electrolyzer nationallicence Electrocatalysts nationallicence Nickel nationallicence Chattopadhyay Jayeeta Department of Applied Chemistry, Birla Institute of Technology, Deoghar Extension Campus, 814 142, Jasidih, Jharkhand, India aut Srivastava Rohit Department of Applied Chemistry, Birla Institute of Technology, Deoghar Extension Campus, 814 142, Jasidih, Jharkhand, India aut Srivastava Prem Department of Applied Chemistry, Birla Institute of Technology, Deoghar Extension Campus, 814 142, Jasidih, Jharkhand, India aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/8(2013-08-01), 1571-1577 0256-1115 30:8<1571 2013 30 11814 https://doi.org/10.1007/s11814-013-0085-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-013-0085-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chattopadhyay Jayeeta Department of Applied Chemistry, Birla Institute of Technology, Deoghar Extension Campus, 814 142, Jasidih, Jharkhand, India aut NATIONALLICENCE 700 1- Srivastava Rohit Department of Applied Chemistry, Birla Institute of Technology, Deoghar Extension Campus, 814 142, Jasidih, Jharkhand, India aut NATIONALLICENCE 700 1- Srivastava Prem Department of Applied Chemistry, Birla Institute of Technology, Deoghar Extension Campus, 814 142, Jasidih, Jharkhand, India aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/8(2013-08-01), 1571-1577 0256-1115 30:8<1571 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer