| Title: |
A corrosion-resistant RuMoNi catalyst for efficient and long-lasting seawater oxidation and anion exchange membrane electrolyzer |
| Authors: |
Xin Kang; Fengning Yang; Zhiyuan Zhang; Heming Liu; Shiyu Ge; Shuqi Hu; Shaohai Li; Yuting Luo; Qiangmin Yu; Zhibo Liu; Qiang Wang; Wencai Ren; Chenghua Sun; Hui-Ming Cheng; Bilu Liu |
| Source: |
Nature Communications, Vol 14, Iss 1, Pp 1-10 (2023) |
| Publisher Information: |
Nature Portfolio, 2023. |
| Publication Year: |
2023 |
| Collection: |
LCC:Science |
| Subject Terms: |
Science |
| Description: |
Abstract Direct seawater electrolysis is promising for sustainable hydrogen gas (H2) production. However, the chloride ions in seawater lead to side reactions and corrosion, which result in a low efficiency and poor stability of the electrocatalyst and hinder the use of seawater electrolysis technology. Here we report a corrosion-resistant RuMoNi electrocatalyst, in which the in situ-formed molybdate ions on its surface repel chloride ions. The electrocatalyst works stably for over 3000 h at a high current density of 500 mA cm−2 in alkaline seawater electrolytes. Using the RuMoNi catalyst in an anion exchange membrane electrolyzer, we report an energy conversion efficiency of 77.9% and a current density of 1000 mA cm−2 at 1.72 V. The calculated price per gallon of gasoline equivalent (GGE) of the H2 produced is $ 0.85, which is lower than the 2026 technical target of $ 2.0/GGE set by the United Stated Department of Energy, thus, suggesting practicability of the technology. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2041-1723 |
| Relation: |
https://doaj.org/toc/2041-1723 |
| DOI: |
10.1038/s41467-023-39386-5 |
| Access URL: |
https://doaj.org/article/3fa9b6483a454be8a20fa98cdbe38dec |
| Accession Number: |
edsdoj.3fa9b6483a454be8a20fa98cdbe38dec |
| Database: |
Directory of Open Access Journals |