Ju, Qiangjian, Ma, Ruguang, Pei, Yu, Guo, Beibei, Li, Zichuang, Liu, Qian, Thomas, Tiju, Yang, Minghui, Hutchings, Graham J.  ORCID: https://orcid.org/0000-0001-8885-1560 and Wang, Jiacheng
2020.
Ruthenium triazine composite: a good match for increasing hydrogen evolution activity through contact electrification.
Advanced Energy Materials
10
(21)
, 2000067.
10.1002/aenm.202000067
|
Preview |
PDF
- Accepted Post-Print Version
Download (734kB) | Preview |
Preview |
PDF
- Supplemental Material
Download (1MB) | Preview |
Abstract
The development of Pt‐free catalysts for the alkaline hydrogen evolution reaction (HER), which is widely used in industrial scale water‐alkali electrolyzers, remains a contemporary and pressing challenge. Ruthenium (Ru) has excellent water‐dissociation abilities and could be an alternative water splitting catalyst. However, its large hydrogen binding energy limits HER activity. Here, a new approach is proposed to boost the HER activity of Ru through uniform loading of Ru nanoparticles on triazine‐ring (C3N3)‐doped carbon (triNC). The composite (Ru/triNC) exhibits outstanding HER activity with an ultralow overpotential of ≈2 mV at 10 mA cm−2; thereby making it the best performing electrocatalyst hitherto reported for alkaline HER. The calculated metal mass activity of Ru/triNC is >10 and 15 times higher than that of Pt/C and Pt/triNC. Both theoretical and experimental studies reveal that the triazine‐ring is a good match for Ru to weaken the hydrogen binding on Ru through interfacial charge transfer via increased contact electrification. Therefore, Ru/triNC can provide the optimal hydrogen adsorption free energy (approaching zero), while maintaining the strong water‐dissociation activity. This study provides a new avenue for designing highly efficient and stable electrocatalysts for water splitting.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Chemistry Research Institutes & Centres > Cardiff Catalysis Institute (CCI) |
| Publisher: | Wiley |
| ISSN: | 1614-6832 |
| Date of First Compliant Deposit: | 17 April 2020 |
| Date of Acceptance: | 23 March 2020 |
| Last Modified: | 06 Nov 2024 10:30 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/131075 |
Citation Data
Cited 50 times in Scopus. View in Scopus. Powered By Scopus® Data
Actions (repository staff only)
 |
Edit Item |
Altmetric
Altmetric