Toward waterproof magnesium metal anodes by uncovering water-induced passivation and drawing water-tolerant interphases

Yuanjian Li, Xiang Feng, Gaoliang Yang, Wei Ying Lieu, Lin Fu, Chang Zhang, Zhenxiang Xing, Man-Fai Ng, Qianfan Zhang, Wei Liu (), Jun Lu () and Zhi Wei Seh ()
Additional contact information
Yuanjian Li: Technology and Research (A*STAR)
Xiang Feng: Beihang University
Gaoliang Yang: Technology and Research (A*STAR)
Wei Ying Lieu: Technology and Research (A*STAR)
Lin Fu: Guizhou University
Chang Zhang: ShanghaiTech University
Zhenxiang Xing: Technology and Research (A*STAR)
Man-Fai Ng: Technology and Research (A*STAR)
Qianfan Zhang: Beihang University
Wei Liu: ShanghaiTech University
Jun Lu: Zhejiang University
Zhi Wei Seh: Technology and Research (A*STAR)

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract Magnesium (Mg) metal is a promising anode candidate for high-energy and cost-effective multivalent metal batteries, but suffers from severe surface passivation in conventional electrolytes, especially aqueous solutions. Here, we uncover that MgH2, in addition to the well-known MgO and Mg(OH)2, can be formed during the passivation of Mg by water. The formation mechanism and spatial distribution of MgH2, and its detrimental effect on interfacial dynamics and stability of Mg anode are revealed by comprehensive experimental and theoretical investigations. Furthermore, a graphite-based hydrophobic and Mg2+-permeable water-tolerant interphase is drawn using a pencil on the surface of Mg anodes, allowing them to cycle stably in symmetric (> 900 h) and full cells (> 500 cycles) even after contact with water. The mechanistic understanding of MgH2-involved Mg passivation and the design of pencil-drawn waterproof Mg anodes may inspire the further development of Mg metal batteries with high water resistance.

Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-024-53796-z Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-53796-z

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-024-53796-z

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().