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A novel calcium fluorinated alkoxyaluminate salt as a next step towards Ca metal anode rechargeable batteries
Ca metal anode rechargeable batteries are seen as a sustainable high-energy density and high-voltage alternative to the current Li-ion battery technology due to the low redox potential of Ca metal and abundance of Ca. Electrolytes are key enablers on the path towards next-generation battery systems....
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10335333/ https://www.ncbi.nlm.nih.gov/pubmed/37441279 http://dx.doi.org/10.1039/d3ta02084c |
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author | Pavčnik, Tjaša Forero-Saboya, Juan D. Ponrouch, Alexandre Robba, Ana Dominko, Robert Bitenc, Jan |
author_facet | Pavčnik, Tjaša Forero-Saboya, Juan D. Ponrouch, Alexandre Robba, Ana Dominko, Robert Bitenc, Jan |
author_sort | Pavčnik, Tjaša |
collection | PubMed |
description | Ca metal anode rechargeable batteries are seen as a sustainable high-energy density and high-voltage alternative to the current Li-ion battery technology due to the low redox potential of Ca metal and abundance of Ca. Electrolytes are key enablers on the path towards next-generation battery systems. Within this work, we synthesize a new calcium tetrakis(hexafluoroisopropyloxy) aluminate salt, Ca[Al(hfip)(4)](2), and benchmark it versus the state-of-the-art boron analogue Ca[B(hfip)(4)](2). The newly developed aluminate-based electrolyte exhibits improved performance in terms of conductivity, Ca plating/stripping efficiency, and oxidative stability as well as Ca battery cell performance. A marked improvement of 0.5 V higher oxidative stability can pave the path towards high-voltage Ca batteries. A critical issue of solvent quality during salt synthesis is identified as well as solvent decomposition at the Ca metal/electrolyte interface, which leads to passivation of the Ca metal anode. However, the new aluminate salt with preferable electrochemical properties over the existing boron analogue opens up a new area for future Ca battery research based on aluminium compounds. |
format | Online Article Text |
id | pubmed-10335333 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-103353332023-07-12 A novel calcium fluorinated alkoxyaluminate salt as a next step towards Ca metal anode rechargeable batteries Pavčnik, Tjaša Forero-Saboya, Juan D. Ponrouch, Alexandre Robba, Ana Dominko, Robert Bitenc, Jan J Mater Chem A Mater Chemistry Ca metal anode rechargeable batteries are seen as a sustainable high-energy density and high-voltage alternative to the current Li-ion battery technology due to the low redox potential of Ca metal and abundance of Ca. Electrolytes are key enablers on the path towards next-generation battery systems. Within this work, we synthesize a new calcium tetrakis(hexafluoroisopropyloxy) aluminate salt, Ca[Al(hfip)(4)](2), and benchmark it versus the state-of-the-art boron analogue Ca[B(hfip)(4)](2). The newly developed aluminate-based electrolyte exhibits improved performance in terms of conductivity, Ca plating/stripping efficiency, and oxidative stability as well as Ca battery cell performance. A marked improvement of 0.5 V higher oxidative stability can pave the path towards high-voltage Ca batteries. A critical issue of solvent quality during salt synthesis is identified as well as solvent decomposition at the Ca metal/electrolyte interface, which leads to passivation of the Ca metal anode. However, the new aluminate salt with preferable electrochemical properties over the existing boron analogue opens up a new area for future Ca battery research based on aluminium compounds. The Royal Society of Chemistry 2023-05-23 /pmc/articles/PMC10335333/ /pubmed/37441279 http://dx.doi.org/10.1039/d3ta02084c Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/ |
spellingShingle | Chemistry Pavčnik, Tjaša Forero-Saboya, Juan D. Ponrouch, Alexandre Robba, Ana Dominko, Robert Bitenc, Jan A novel calcium fluorinated alkoxyaluminate salt as a next step towards Ca metal anode rechargeable batteries |
title | A novel calcium fluorinated alkoxyaluminate salt as a next step towards Ca metal anode rechargeable batteries |
title_full | A novel calcium fluorinated alkoxyaluminate salt as a next step towards Ca metal anode rechargeable batteries |
title_fullStr | A novel calcium fluorinated alkoxyaluminate salt as a next step towards Ca metal anode rechargeable batteries |
title_full_unstemmed | A novel calcium fluorinated alkoxyaluminate salt as a next step towards Ca metal anode rechargeable batteries |
title_short | A novel calcium fluorinated alkoxyaluminate salt as a next step towards Ca metal anode rechargeable batteries |
title_sort | novel calcium fluorinated alkoxyaluminate salt as a next step towards ca metal anode rechargeable batteries |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10335333/ https://www.ncbi.nlm.nih.gov/pubmed/37441279 http://dx.doi.org/10.1039/d3ta02084c |
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