AI Article Synopsis
- Multivalent batteries, particularly using polytriphenylamine (PTPAn) composites, show great potential for sustainable energy storage through efficient anion storage.
- The PTPAn cathode displays impressive performance in magnesium and calcium systems, achieving high cell voltages over 3 V, with significant power and energy densities.
- With the addition of a calcium-tin (Ca-Sn) alloy anode, these batteries can last for 3000 cycles while maintaining 60% capacity retention, indicating a promising future for divalent ion batteries.
Article Abstract
Multivalent batteries show promising prospects for next-generation sustainable energy storage applications. Herein, we report a polytriphenylamine (PTPAn) composite cathode capable of highly reversible storage of tetrakis(hexafluoroisopropyloxy) borate [B(hfip) ] anions in both Magnesium (Mg) and calcium (Ca) battery systems. Spectroscopic and computational studies reveal the redox reaction mechanism of the PTPAn cathode material. The Mg and Ca cells exhibit a cell voltage >3 V, a high-power density of ∼∼3000 W kg and a high-energy density of ∼∼300 Wh kg , respectively. Moreover, the combination of the PTPAn cathode with a calcium-tin (Ca-Sn) alloy anode could enable a long battery-life of 3000 cycles with a capacity retention of 60 %. The anion storage chemistry associated with dual-ion electrochemical concept demonstrates a new feasible pathway towards high-performance divalent ion batteries.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10107827 | PMC |
| http://dx.doi.org/10.1002/anie.202212339 | DOI Listing |
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