Anion Storage Chemistry of Organic Cathodes for High-Energy and High-Power Density Divalent Metal Batteries.
Yanlei XiuAnna MauriSirshendu DindaYohanes PramudyaZiming DingThomas DiemantAbhishek SarkarLiping WangZhenyou LiWolfgang WenzelMaximilian FichtnerZhirong Zhao-KargerPublished in: Angewandte Chemie (International ed. in English) (2022)
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) 4 ] 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 -1 and a high-energy density of ∼∼300 Wh kg -1 , 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.
Keyphrases
- ion batteries
- ionic liquid
- solid state
- single cell
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- molecular docking
- gold nanoparticles
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- mesenchymal stem cells
- oxidative stress
- current status
- high resolution
- label free
- molecular dynamics simulations
- cell proliferation
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- oxide nanoparticles
- liquid chromatography