论文标题
在单独的氧气和氢细胞中分裂的光电化学水
Photoelectrochemical water splitting in separate oxygen and hydrogen cells
论文作者
论文摘要
太阳能分解为可持续氢生产和太阳能存储提供了有希望的路径。大规模利用这项技术的最大挑战之一是降低氢的生产成本。在同一细胞中共同生产氢和氧的常规电解质结构，在光电化学（PEC）水分分裂细胞中引起了关键的挑战，这些细胞直接将太阳能和水转化为氢。在这里，我们通过分离氢和氧细胞来克服这些挑战。我们细胞中的离子交换是由辅助电极介导的，并且细胞仅通过金属线连接，从而实现集中式氢的产生。我们证明了在太阳能到水的转化效率为7.5％的单独细胞中产生的氢，使用标准的商业组件可以很容易地超过10％。基本的成本比较表明，我们的方法与常规PEC系统具有竞争力，从而实现了安全且潜在的太阳能氢的生产。
Solar water splitting provides a promising path for sustainable hydrogen production and solar energy storage. One of the greatest challenges towards large-scale utilization of this technology is reducing the hydrogen production cost. The conventional electrolyzer architecture, where hydrogen and oxygen are co-produced in the same cell, gives rise to critical challenges in photoelectrochemical (PEC) water splitting cells that directly convert solar energy and water to hydrogen. Here we overcome these challenges by separating the hydrogen and oxygen cells. The ion exchange in our cells is mediated by auxiliary electrodes, and the cells are connected to each other only by metal wires, enabling centralized hydrogen production. We demonstrate hydrogen generation in separate cells with solar-to-hydrogen conversion efficiency of 7.5%, which can readily surpass 10% using standard commercial components. A basic cost comparison shows that our approach is competitive with conventional PEC systems, enabling safe and potentially affordable solar hydrogen production.
