Photo-assisted chargeability of TiO2-Pt/Mm（Ni3.4Mn0.4Al0.3Co0.7）electrode

WANG Gaitian; TU Jiangping; ZHAO Xuezhi

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Photo-assisted chargeability of TiO₂-Pt/Mm（Ni_3.4Mn_0.4Al_0.3Co_0.7）electrode

更新时间：2025-12-10

- Photo-assisted chargeability of TiO₂-Pt/Mm（Ni_3.4Mn_0.4Al_0.3Co_0.7）electrode
- CIESC Journal Issue 5, Pages: 1278-1282(2008)
- 作者机构：
  
  1. 仲恺农业技术学院信息学院
  2. 浙江大学材料系
  3. 广东商学院数学与计算科学系
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 May 2008，
  
  Published：05 May 2008
- 稿件说明：
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WANG Gaitian, TU Jiangping, ZHAO Xuezhi. Photo-assisted chargeability of TiO₂-Pt/Mm（Ni_3.4Mn_0.4Al_0.3Co_0.7）electrode[J]. CIESC Journal, 2008, (5): 1278-1282.
DOI：

WANG Gaitian, TU Jiangping, ZHAO Xuezhi. Photo-assisted chargeability of TiO₂-Pt/Mm（Ni_3.4Mn_0.4Al_0.3Co_0.7）electrode[J]. CIESC Journal, 2008, (5): 1278-1282. DOI：

摘要

1～8 nm的Pt微粒通过光催化分解法沉积在20～50 nm的TiO2微粒表面，然后把所制备的TiO2-Pt纳米微粒修饰到富La的贮氢合金电极的表面，形成可助光充电的TiO2-Pt/Mm（Ni3.4Mn0.4Al0.3Co0.7）电极（TPM电极），研究了TPM电极的光电化学、可助光充电行为。结果表明：微小的电流对TPM电极的光充电效应有较强的辅助作用。当TPM电极只被光照时，放出的电量较小;而在光照的同时加上一个微弱的电流，可显著改善其光充电性能。通过交流阻抗谱和循环伏安实验研究了其光充电机理。

Abstract

A photo-chargeable TiO2-Pt/Mm（Ni3.4Mn0.4Al0.3Co0.7）electrode（TPM electrodes）was prepared by using a hydrogen storage alloy［Mm（Ni3.4Mn0.4Al0.3Co0.7）］sheet modified with TiO2-Pt nanoparticles prepared by the photo-assisted deposition method.The photo-electrochemical properties and the photo-chargeability of TPM electrode were investigated.The results showed that the TPM could be charged by light with the aid of electric current.But the discharge content of the TPM electrode illuminated only was very small in contrast with the electrode charged by light and electric current.The mechanism was explained by the results of the cyclic voltammogram and electrochemical impedance spectrum of the TPM electrode with or without illumination.

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