Tailoring Ion-Conducting Interphases on Magnesium Metals for High-Efficiency Rechargeable Magnesium Metal Batteries
- Authors
- Park, Hyeokjun; Lim, Hyung-Kyu; Oh, Si Hyoung; Park, Jooha; Lim, Hee-Dae; Kang, Kisuk
- Issue Date
- Dec-2020
- Publisher
- AMER CHEMICAL SOC
- Citation
- ACS ENERGY LETTERS, v.5, no.12, pp.3733 - 3740
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS ENERGY LETTERS
- Volume
- 5
- Number
- 12
- Start Page
- 3733
- End Page
- 3740
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/186226
- DOI
- 10.1021/acsenergylett.0c02102
- ISSN
- 2380-8195
- Abstract
- Magnesium (Mg) rechargeable batteries are one of the promising high-energy post-lithium battery chemistries exploiting the multivalent charge carrier. However, the use of magnesium metal has been challenging due to the formation of the ion-blocking passivation layer on magnesium metal in most organic electrolytes. Herein, we propose a new strategy to transform the passivating film into a Mg2+-conductive interphase via simple chemisorption of sulfur dioxide molecules on magnesium metal. The facile chemical tuning converts the magnesium oxide-based passivation layer into a magnesium sulfate-like phase, which greatly enhances the charge-transfer capability of multivalent Mg2+ ions. The reduced surface resistance of the magnesium metal results in efficient magnesium stripping/deposition reactions even under conventional ether-based electrolytes. Theoretical calculations support that the facile ionic conduction is attributed to the relatively low Mg2+ dissociation and migration energies in the tailored interphases. Furthermore, we elucidate the degradation mechanism of magnesium electrodes by combining various experimental analyses with computational calculations.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 화학공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/186226)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.