| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Materials for Energy Conversion and Storage VI
|
| Presentation Title |
E-16: Enhanced Stability of B-site W Doped Pr0.6Sr0.4Fe1-xWxO3-δ Ceramic Membranes for Water Splitting |
| Author(s) |
Yanbo Liu, Hongwei Cheng, Xiaofang Xu, Qiangchao Sun, Chaoyun Liu, Qian Xu, Xionggang Lu |
| On-Site Speaker (Planned) |
Yanbo Liu |
| Abstract Scope |
A series of perovskite-type oxygen permeable membranes Pr0.6Sr0.4Fe1-xWxO3-δ (PSFW, x=0-0.1) were synthesized by sol-gel method. The effects of W doping on the microstructure, chemical stability, and thermochemical water splitting performance were investigated systematically by X-ray diffraction, scanning electron microscope, X-ray photoelectron spectra and thermal gravity analysis techniques. With the increase of W doping level, the valence of Fe reduced, which improve chemical stability in reducing atmosphere but decreases the oxygen permeability. The results indicated that the relative content of Fe+3/Fe+4 remaining unchanged before and after water splitting experiment, which is due to the doping of W. Those effects are attributed to the increased metal oxygen average binding energy (ABE). Furthermore, at long-time water splitting tests, the hydrogen production rate of membrane PSF decreased about 10%, but membrane PSFW0.1 almost remained stable and showed good chemical stability, which made it promising potential for hydrogen production from water splitting. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |