A Liquid-Metal-Enabled Versatile Organic Alkali-Ion Battery

A Liquid-Metal-Enabled Versatile Organic Alkali-Ion Battery

© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 31(2019), 11 vom: 20. März, Seite e1806956
1. Verfasser: Ding, Yu (VerfasserIn)
Weitere Verfasser: Guo, Xuelin, Qian, Yumin, Zhang, Leyuan, Xue, Leigang, Goodenough, John B, Yu, Guihua
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article flexible batteries liquid metals organic electrodes potassium-ion batteries sodium-ion batteries
Beschreibung
Zusammenfassung:© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Despite the high specific capacity and low redox potential of alkali metals, their practical application as anodes is still limited by the inherent dendrite-growth problem. The fusible sodium-potassium (Na-K) liquid metal alloy is an alternative that detours this drawback, but the fundamental understanding of charge transport in this binary electroactive alloy anode remains elusive. Here, comprehensive characterization, accompanied with density function theory (DFT) calculations, jointly expound the Na-K anode-based battery working mechanism. With the organic cathode sodium rhodizonate dibasic (SR) that has negligible selectivity toward cations, the charge carrier is screened by electrolytes due to the selective ionic pathways in the solid electrolyte interphase (SEI). Stable cycling for this Na-K/SR battery is achieved with capacity retention per cycle to be 99.88% as a sodium-ion battery (SIB) and 99.70% as a potassium-ion battery (PIB) for over 100 cycles. Benefitting from the flexibility of the liquid metal and the specially designed carbon nanofiber (CNF)/SR layer-by-layer cathode, a flexible dendrite-free alkali-ion battery is achieved with an ultrahigh areal capacity of 2.1 mAh cm-2 . Computation-guided materials selection, characterization-supported mechanistic understanding, and self-validating battery performance collectively promise the prospect of a high-performance, dendrite-free, and versatile organic-based liquid metal battery
Beschreibung:Date Completed 13.03.2019
Date Revised 30.09.2020
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.201806956