There is a growing need for environmentally friendly, ethical, and cost-effective energy storage. The Bristol Composites Institute’s scientists have devised a revolutionary programmable unidirectional ice-templating approach that enables tailoring the electrochemical performance of next-generation post-lithium-ion batteries while maintaining sustainability and mass availability.
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Based on an ice-templating mechanism, the novel carbon electrode material was developed. These materials are called aerogels, and they are made by growing and then sublimating ice crystals to produce a porous structure of cellulose nanocrystals (a nano-sized version of cellulose). This results in the formation of vast channels inside the structure capable of transporting the massive sodium and potassium ions.
The novel controllable ice-templating technique is being used by scientists to fabricate low-cost cellulose nanocrystals/polyethylene oxide-derived carbon aerogels with hierarchically tailored and vertically aligned channels as electrode materials. These materials are being used to optimise the rate capability and cycling stability of sodium and potassium-ion batteries.
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Scientists found the performance of these novel sodium and potassium ion batteries has been demonstrated to be superior to that of several previous comparable systems, and they are made of a material generated sustainably – cellulose.
Benefiting from the renewable nature of the precursor and the comparatively cheap cost of the ecologically benign synthesis method, scientists feel that this study may pave the way for large-scale deployments of sustainable electric cars and energy storage systems in the near future.
Reference- Bristol Composites Institute, journal Advanced Functional Materials, Clean Technica