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Title: Current Collector Corrosion in Ca-Ion Batteries

Journal Article · · Journal of the Electrochemical Society
DOI:https://doi.org/10.1149/2.0811508jes· OSTI ID:1392318

With significant improvements in electrical energy storage, researchers could change the way energy is generated and used. We report that one emerging approach is to change the cation that shuttles charge from lithium to calcium. Calcium cations, roughly the same size as Na+, have many attributes that make them a desirable charge carrier for energy storage applications, including deposition voltage and a porous passivation layer. However, system level issues, such as corrosion, have yet to be investigated. Corrosion of the current collectors must be considered whenever you change the electrolyte and we show that this is particularly true for calcium based systems. Reversible charge/discharge behavior that is due to corrosion can be seen with stainless steel in electrolytes containing calcium salts. This reversible behavior is similar to what might be expected from materials that are intercalating Ca, making the interpretation of electrochemical data challenging. Lastly, we have found that this corrosion reaction requires either carbon black and/or a transition metal oxide to catalyze the reaction, making it more difficult to detect. Unlike stainless steel, Graphite foil electrodes do not show high voltage reactions and can be used as a tool for testing Ca-ion cathode materials, although some reactions at low potentials have been observed.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Joint Center for Energy Storage Research (JCESR)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1392318
Journal Information:
Journal of the Electrochemical Society, Vol. 162, Issue 8; ISSN 0013-4651
Publisher:
The Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 29 works
Citation information provided by
Web of Science

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Cited By (5)

Calcium-Ion Batteries: Current State-of-the-Art and Future Perspectives journal July 2018
Toward a Reversible Calcium‐Sulfur Battery with a Lithium‐Ion Mediation Approach journal February 2019
2,5-Dimethoxy-1,4-Benzoquinone (DMBQ) as Organic Cathode for Rechargeable Magnesium-Ion Batteries journal January 2016
Practical Stability Limits of Magnesium Electrolytes journal January 2016
Laboratory-Based X-ray Absorption Spectroscopy on a Working Pouch Cell Battery at Industrially-Relevant Charging Rates journal January 2019

Figures / Tables (6)


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