Aluminum is more abundant when compare to Li. It is commonly used as foils in the lab as well as in the hotel industry. The foils are disposed of after single use. If this material is used in battery, then the cost can be reduced significantly. This idea was mooted by one of my senior research colleague.
Aluminum is more abundant when compared to Li. It is commonly used as foils in the lab as well as in the hotel industry. The foils are disposed of after single use. If this material is used in battery, then the cost can be reduced significantly. This idea was mooted by one of my senior research colleagues.
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The trivalent charge carrier, Al3+ has both advantages[1] and (performance) disadvantages[2] (low[2,3] Al-electrolytes' stability and conductivity, Al-plating/stripping[3]) of some existing (lab.) Al-batteries.
1. Αdvantages: "(i) the most abundant metal in the Earth's crust, (ii) trivalent charge carrier storing three times more charge with each ion transfer in comparison with Li, (iii) the volumetric capacity of the Al anode is four times higher than that of Li while their gravimetric capacities are comparable, (iv) employing a metallic Al anode does not have a major safety risk as is the case for alkali metals. However, there are serious obstacles to the practical development of Al batteries such as the complicated nature of trivalent Al3+ intercalation into the cathode of Al-ion batteries and corrosion of the metallic Al anode in aqueous electrolytes.", in:
Electrochemical energy storage by aluminum as a lightweight and cheap anode/charge carrier https://pubs.rsc.org/en/content/articlelanding/2017/SE/C7SE00050B
2. Disadvantages: "Unlike lithium-ion batteries, where the mobile ion is Li+, aluminum forms a complex with chloride in most electrolytes and generates an anionic mobile charge carrier, usually AlCl4− or Al2Cl7−.", in:
Team designs aluminum-ion batteries with graphene electrode https://www.graphene-info.com/team-designs-aluminum-ion-batteries-graphene-electrode
3. Aluminum electrolytes for Al dual-ion batteries [Open Access] https://www.nature.com/articles/s42004-020-00365-2
Dear Dr.Ioannis Samaras,
Thank you for your response. Not much work has been done in this area and the initial problems associated with this metal ion can be overcome when more research is carried out.
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