A photocatalyst-assisted electrolysis system, has been demonstrated to reduce energy consumption and provide stable operation for hydrogen production under intermittent light irradiation. In the photocatalyst-assisted electrolysis system cell, the photocatalyst, PtRu-WO3, stores solar energy as chemical energy via the formation of Fe3+ ions and O2 evolution during the daytime on the anolyte side; subsequently, hydrogen is produced through water electrolysis using the stored solar energy at night on the catholyte side. Simulated and natural solar energy was successfully stored by an energy-buffer system of photocatalyst/Fe2+/3+ ions for stable operation under dark conditions. Additionally, the operation of a large-scale photocatalyst-assisted electrolysis cell (light illumination area of 122.5 cm2) under natural sunlight irradiation was demonstrated. The hydrogen production efficiency was approximately ∼70 % higher than that of a conventional water electrolysis cell using the same electrical power.

中文翻译：

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Pt-Ru 修饰的 WO3 基光催化剂辅助电解混合电池用于制氢


光催化剂辅助电解系统已被证明可以降低能耗，并为间歇性光照下的制氢提供稳定的运行。在光催化剂辅助电解系统电池中，光催化剂 PtRu-WO3 通过在阳极电解体侧白天形成 Fe3+ 离子和 O2 释放，将太阳能储存为化学能;随后，利用阴极侧夜间储存的太阳能通过水电解制氢。通过光催化剂/Fe2+/3+ 离子的能量缓冲系统成功储存了模拟和自然太阳能，以便在黑暗条件下稳定运行。此外，还展示了大型光催化剂辅助电解槽（光照面积为 122.5 cm2）在自然阳光照射下的运行。氢气生产效率比使用相同电力的传统水电解池高约 ∼70 %。