1. Solid oxide electrolysis cell with biomimetic micron channel cathode for intermittent and efficient energy storage through hydrogen production.
- Author
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Feng, Zhiqiang, Zhang, Xiangdong, Yue, Yinglei, Qi, Qin, He, Fan, and Luo, Deli
- Subjects
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ENERGY storage , *HYDROGEN storage , *HYDROGEN production , *CATHODES , *ELECTROLYSIS - Abstract
Facile fabrication of solid oxide electrodes with highly orderly hierarchical channels and active triple-phase boundary still remains a great challenge. In this work, an ordered interconnected biomimetic porous electrode structure of micron channel and nano functional layer was realized by a simple two-step method using wood as a template. The vertically arranged micro channel of the biomimetic cathode allows rapid diffusion between water vapor and hydrogen, greatly reducing the concentration polarization of the cathode. A wealth of three-phase boundary formed by the micron channel and the nano-nickel catalytic layer on its surface provides more reaction sites for water molecule decomposition. In addition, the ordered cathode structure better adapts to the intermittent energy storage needs at various time periods, as the nickel in this structure is more difficult to oxidize after cell operation stops. This simple yet effective structure provides a much more feasible approach for designing solid oxide electrolysis cells. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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