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Flexible cupric oxide photocathode with enhanced stability for renewable hydrogen energy production from solar water splitting

机译:柔性氧化铜氧化物光电阴极,具有来自太阳能水分裂的可再生氢能量生产的增强稳定性

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摘要

CuO is a promising but unstable photocathode in solar water splitting. Herein, a flexible CuO photocathode is prepared and its degradation mechanisms and stabilization strategies have been discussed. Briefly, we find alkali environment and low light intensity are the critical factors in the stabilization of the CuO photocathode. For practical usage, a composite semiconductor layer, composed of TiO2, La2O3 and NiO, is deposited on the CuO photocathode, which is proved to be effective for enhancing the stabilization of the CuO photocathode. 100% of the photocurrent density has been retained after 20 minutes of continuous illumination. The optimized stable photocurrent density is measured as 0.3 mA cm(-2) at 0.5 V-RHE.
机译:CuO是太阳能分裂的有希望但不稳定的光电阴极。 这里,制备柔性CuO光电阴极,并讨论了其降解机制和稳定策略。 简而言之,我们发现碱环境和低光强度是Cuo光电阴极稳定的关键因素。 为了实际使用,在CuO光电阴极上沉积由TiO 2,La2O3和NiO组成的复合半导体层,其被证明是有效地增强CuO光电阴极的稳定性。 在连续照明20分钟后,100%的光电流密度已保留。 优化的稳定光电流密度在0.5V-rhe下测量为0.3 mA cm(-2)。

著录项

  • 来源
    《RSC Advances》 |2019年第15期|共5页
  • 作者

    Li Yang; Luo Kai;

  • 作者单位

    Jiangsu Univ Sci &

    Technol Sch Energy &

    Power Zhenjiang 212003 Jiangsu Peoples R China;

    Jiangsu Univ Sci &

    Technol Sch Energy &

    Power Zhenjiang 212003 Jiangsu Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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