Journal article 581 views 53 downloads
Ionically conducting inorganic binders: a paradigm shift in electrochemical energy storage
,
Venkat Pamidi,
Maximilian Fichtner ,
Anji Munnangi
Green Chemistry, Volume: 24, Issue: 14, Pages: 5620 - 5631
Swansea University Author:
Anji Munnangi
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DOI (Published version): 10.1039/d2gc01389d
Abstract
Among the key components in batteries, binders play a vital role by interconnecting active materials and conductive additives and facilitating the coating of electrode materials on the desired substrates thus enabling the flexible fabrication of batteries. Further, they aid in buffering volume chang...
| Published in: | Green Chemistry |
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| ISSN: | 1463-9262 1463-9270 |
| Published: |
Royal Society of Chemistry (RSC)
2022
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa60467 |
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| Abstract: |
Among the key components in batteries, binders play a vital role by interconnecting active materials and conductive additives and facilitating the coating of electrode materials on the desired substrates thus enabling the flexible fabrication of batteries. Further, they aid in buffering volume changes that arise in electrode materials and enhance their cycling stability. Presently, polyvinylidene fluoride-based binders are employed widely, despite their high cost, non-eco-friendliness, and energy inefficiency. Several water processable binders have been investigated as alternatives, but they suffer from various intrinsic issues. Here, we reveal the potential of several ionically conducting inorganic binders (ICIBs). These ICIBs are not only ionically conducting, but also water processable, chemically compatible, eco-friendly, low-cost, thermally stable (>1000 °C), emission-free, and importantly, safe to use. These inorganic binders outperformed standard polyvinylidene fluoride-based binders in several aspects. Surprisingly, ICIBs are absorbing the exothermic heat evolved by charged cathode materials at high temperatures, which will significantly enhance the safety of the batteries. The unique intrinsic ionic conductive properties combined with binding abilities enabled the flexible processing and functioning of solid-state batteries, otherwise challenging due to the mechanical rigidity, chemical incompatibility, and interfacial issues posed by solid electrolytes. The inorganic binders introduced here will make battery manufacturing and recycling more energy-efficient, eco-friendly, flexible, safe, and above all, cost-effective. |
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| College: |
Faculty of Science and Engineering |
| Funders: |
This work contributes to the research performed at CELEST (Center for Electrochemical Energy Storage Ulm-Karlsruhe) and was funded by the German Research Foundation (DFG) under project ID 390874152 (POLiS Cluster of Excellence, EXC 2154). MAR acknowledges Engineering and Physical Sciences Research Council (EPSRC): grant – EP/V014994/1. |
| Issue: |
14 |
| Start Page: |
5620 |
| End Page: |
5631 |