title: Photoassisted charge behavior of hydrogen storage alloy-TiO2/Pt electrodes.
abstract: The photoassisted charge behavior of hydrogen storage alloy modified with TiO2/Pt nanocomposites (HSA-TiO2/Pt electrode) was investigated. The HSA-TiO2/Pt electrode can be photocharged under current. The mechanism of photoassisted behavior of the HSA-TiO2/Pt electrode was explained through the results of cyclic voltammogram and impedance measurements of the HSA-TiO2/Pt electrode. Upon illumination, the photogenerated electrons can charge the electrode, but the photogenerated holes may oxidize the hydrogen storage alloy to form a layer of metal oxide. Because the current could keep the electrode active, the H atoms produced by photogenerated electrons diffused to the hydrogen storage alloy and a metal hydride formed. The electrode delivered a higher discharge capacity due to the assistance of photocharge.
authors.affiliation: Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
authors.forename: G T
authors.initials: GT
authors.lastname: Wang
authors.forename: J P
authors.initials: JP
authors.lastname: Tu
authors.forename: W K
authors.initials: WK
authors.lastname: Zhang
authors.forename: X L
authors.initials: XL
authors.lastname: Wang
authors.forename: H
authors.initials: H
authors.lastname: Huang
authors.forename: X P
authors.initials: XP
authors.lastname: Gan