Metal Oxide-Based Tandem Cells for Self-Biased Photoelectrochemical Water Splitting,ACS Energy Letters

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Metal Oxide-Based Tandem Cells for Self-Biased Photoelectrochemical Water Splitting
ACS Energy Letters ( IF 19.3 ) Pub Date : 2020-02-20 , DOI: 10.1021/acsenergylett.9b02620
Yubin Chen ₁ , Xiaoyang Feng ₁ , Ya Liu ₁ , Xiangjiu Guan ₁ , Clemens Burda _{1,

2} , Liejin Guo ₁

Affiliation

Photoelectrochemical (PEC) water splitting represents a promising route to convert solar energy into clean hydrogen. Constructing tandem cells has emerged as a feasible approach and attracted tremendous attention for self-biased water splitting, especially using low-cost and stable metal oxides. Herein, a state-of-the-art review of metal oxide-based PEC/photovoltaic (PV) tandem cells and PEC tandem cells is comprehensively presented, with a focus on crucial issues of designing efficient tandem devices from the aspects of the photoanodes, photocathodes, and photovoltaics. Different device configurations and efficiency limitations of tandem cells are introduced, and advances of metal oxide-based PEC/PV and PEC tandem cells in terms of material design and device optimization are discussed. Metal oxide-based tandem cells have shown solar-to-hydrogen efficiencies of ∼8%, which is approaching practicality. Perspectives on remaining challenges and potential strategies are outlined.

中文翻译：

基于金属氧化物的串联电池自偏压光电化学水分解

光电化学（PEC）分解水是将太阳能转化为清洁氢的一种有前途的途径。构建串联电池已成为一种可行的方法，并引起了自偏水分解的极大关注，特别是使用低成本且稳定的金属氧化物。本文全面介绍了基于金属氧化物的PEC /光伏（PV）串联电池和PEC串联电池的最新进展，重点是从光电阳极的角度设计高效串联设备的关键问题，光电阴极和光伏电池。介绍了串联电池的不同器件配置和效率限制，并讨论了基于金属氧化物的PEC / PV和PEC串联电池在材料设计和器件优化方面的进展。基于金属氧化物的串联电池显示出约8％的太阳能效率，这已接近实用性。概述了有关剩余挑战和潜在策略的观点。

更新日期：2020-02-20

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