Unlocking High Capacity and Fast Na+ Diffusion of Hx CrS2 by Proton-Exchange Pretreatment

Unlocking High Capacity and Fast Na+ Diffusion of Hx CrS2 by Proton-Exchange Pretreatment

© 2023 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 35(2023), 10 vom: 20. März, Seite e2209811
1. Verfasser: Stiles, Joseph W (VerfasserIn)
Weitere Verfasser: Soltys, Anna L, Song, Xiaoyu, Lapidus, Saul H, Arnold, Craig B, Schoop, Leslie M
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article batteries electrodes pretreatment proton exchange
Beschreibung
Zusammenfassung:© 2023 Wiley-VCH GmbH.
This study presents a new material, "Hx CrS2 " (denotes approximate composition) formed by proton-exchange of NaCrS2 which has a measured capacity of 728 mAh g-1 with significant improvements to capacity retention, sustaining over 700 mAh g-1 during cycling experiments. This is the highest reported capacity for a transition metal sulfide electrode and outperforms the most promising proposed sodium anodes to date. Hx CrS2 exhibits a biphasic structure featuring alternating crystalline and amorphous lamella on the scale of a few nanometers. This unique structural motif enables reversible access to Cr redox in the material resulting in higher capacities than seen in the parent structure which features only S redox. Pretreatment by proton-exchange offers a route to materials such as Hx CrS2 which provide fast diffusion and high capacities for sodium-ion batteries
Beschreibung:Date Completed 13.03.2023
Date Revised 13.03.2023
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.202209811