Understanding H 2 Evolution Electrochemistry to Minimize Solvated Water Impact on Zinc‐Anode Performance
University of Wollongong · The University of Adelaide · +3 more institutions
Abstract
Abstract H 2 evolution is the reason for poor reversibility and limited cycle stability with Zn‐metal anodes, and impedes practical application in aqueous zinc‐ion batteries (AZIBs). Here, using a combined gas chromatography experiment and computation, it is demonstrated that H 2 evolution primarily originates from solvated water, rather than free water without interaction with Zn 2+ . Using linear sweep voltammetry (LSV) in salt electrolytes, H 2 evolution is evidenced to occur at a more negative potential than zinc reduction because of the high overpotential against H 2 evolution on Zn metal. The hypothesis is tested and, using a glycine additive to reduce solvated water, it is confirmed that H 2 evolution…
Citation impact
- FWCI
- 27.51
- Percentile
- 100%
- References
- 50
Authors
11- FYFuhua Yang
University of Wollongong, The University of Adelaide
- JAJodie A. Yuwono
Australian National University, The University of Adelaide
- JHJunnan Hao
The University of Adelaide
- JLJun Long
Tsinghua–Berkeley Shenzhen Institute, Tsinghua University
- LYLibei Yuan
University of Wollongong, The University of Adelaide
Topics & keywords
- Materials science
- Zinc
- Electrochemistry
- Galvanic anode
- Anode
- Inorganic chemistry
- Metallurgy
- Cathodic protection
- Clean water and sanitation