选择性
软件部署
材料科学
还原(数学)
光电子学
纳米技术
计算机科学
化学
催化作用
数学
几何学
生物化学
操作系统
作者
Kyra M. K. Yap,Sang‐Won Lee,Myles A. Steiner,Jaime E. Avilés Acosta,Dongkyun Kang,Dong Hwan Kim,Emily L. Warren,Adam C. Nielander,Thomas F. Jaramillo
出处
期刊:Chem catalysis
[Elsevier]
日期:2023-06-01
卷期号:3 (6): 100641-100641
被引量:2
标识
DOI:10.1016/j.checat.2023.100641
摘要
Integrated solar fuels and photoelectrochemical (PEC) CO2 reduction (CO2R) are promising pathways toward producing value-added chemicals from CO2. However, improvements are needed in activity and selectivity as well as in fundamental understanding of device behavior to engender wide deployment. We report two single-junction, integrated photocathodes for PEC CO2R based on TOPCon Si and GaAs substrates, which achieve −10 mA cm−2 at −0.33 V vs. RHE with 41% selectivity to C2+ products and at −0.03 V vs. RHE with 27% selectivity to C2+ products, respectively. We investigated the viability of a light-mediated strategy to direct selectivity in buried-junction PEC devices and confirmed that these devices could be optimized independently and described by the physics-based models of the individual components. Finally, we designed a framework to assess operational modes for PEC CO2R devices and demonstrated this framework under continuous galvanostatic control and variable illumination conditions.
科研通智能强力驱动
Strongly Powered by AbleSci AI