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Anion Storage Chemistry of Organic Cathodes for High‐Energy and High‐Power Density Divalent Metal Batteries

Xiu, Yanlei 1,2; Mauri, Anna 3; Dinda, Sirshendu; Pramudya, Yohanes 3; Ding, Ziming 3; Diemant, Thomas; Sarkar, Abhishek 3; Wang, Liping 2; Li, Zhenyou 1; Wenzel, Wolfgang 3; Fichtner, Maximilian 1,2,3; Zhao-Karger, Zhirong 3
1 Helmholtz-Institut Ulm (HIU), Karlsruher Institut für Technologie (KIT)
2 Post Lithium Storage (POLiS), Karlsruher Institut für Technologie (KIT)
3 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)


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.

Verlagsausgabe §
DOI: 10.5445/IR/1000152098/pub
Veröffentlicht am 21.02.2023
Postprint §
DOI: 10.5445/IR/1000152098
Veröffentlicht am 14.11.2022
DOI: 10.1002/anie.202212339
Zitationen: 12
Web of Science
Zitationen: 11
Zitationen: 14
Cover der Publikation
Zugehörige Institution(en) am KIT Center for Electrochemical Energy Storage Ulm & Karlsruhe (CELEST)
Helmholtz-Institut Ulm (HIU)
Institut für Nanotechnologie (INT)
Karlsruhe Nano Micro Facility (KNMF)
Post Lithium Storage (POLiS)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 09.01.2023
Sprache Englisch
Identifikator ISSN: 1433-7851, 1521-3773
KITopen-ID: 1000152098
HGF-Programm 38.02.01 (POF IV, LK 01) Fundamentals and Materials
Weitere HGF-Programme 43.31.01 (POF IV, LK 01) Multifunctionality Molecular Design & Material Architecture
43.35.03 (POF IV, LK 01) Structural and Functional Behavior of Solid State Systems
Erschienen in Angewandte Chemie International Edition
Verlag John Wiley and Sons
Band 62
Heft 2
Seiten Art.: e202212339
Vorab online veröffentlicht am 21.10.2022
Schlagwörter Anion Storage Chemistry, Divalent Metal Ion Battery, Organic Cathode; 2022-029-031553 TEM
Nachgewiesen in Web of Science
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