论文标题
用于集中氢生产的非耦合光电化学水分分割系统
Decoupled photoelectrochemical water splitting system for centralized hydrogen production
论文作者
论文摘要
光电化学（PEC）水分裂提供了一种优雅的太阳能转化为氢燃料的方法。大规模的氢产生需要稳定，有效的光电剥离和可扩展的PEC细胞，这些细胞适合安全且具有成本效益的操作。最大的挑战之一是收集了分布在太阳能场中的数百万PEC细胞的氢气。在这项工作中，使用100 cm2赤铁矿（A-FE2O3）光抗体和氢氧化镍（Ni（OH）2） /氧羟基（NiooH）电极（NooH）电极作为氧化还原媒介子，使用100 cm2赤铁矿和镍氧化物（Ni（OH）2） /氧化氢氧化物（Ni（OH）2） /镍氢氧化物（Ni（OH）2）设计，设计了一个单独的细胞PEC系统，用于集中氢和氧细胞。系统组件及其配置的工作条件已针对每日周期进行了优化，并在太阳模拟照明下进行了10个8.3 h循环，而在平均短路电流为55.2 mA的情况下，没有额外的偏置。这些结果表明，使用单独的氢和氧细胞成功地运行了脱钩的PEC水分分割系统。
Photoelectrochemical (PEC) water splitting offers an elegant approach for solar energy conversion into hydrogen fuel. Large-scale hydrogen production requires stable and efficient photoelectrodes and scalable PEC cells that are fitted for safe and cost-effective operation. One of the greatest challenges is the collection of hydrogen gas from millions of PEC cells distributed in the solar field. In this work, a separate-cell PEC system with decoupled hydrogen and oxygen cells was designed for centralized hydrogen production, using 100 cm2 hematite (a-Fe2O3) photoanodes and nickel hydroxide (Ni(OH)2) / oxyhydroxide (NiOOH) electrodes as redox mediators. The operating conditions of the system components and their configuration were optimized for daily cycles, and ten 8.3 h cycles were carried out under solar simulated illumination without additional bias at an average short-circuit current of 55.2 mA. These results demonstrate successful operation of a decoupled PEC water splitting system with separate hydrogen and oxygen cells.
