Ternary Salt–Solvent Electrolytes for 5 V-Class Anode-less Li-Metal Batteries

The anode-less lithium-metal battery stands out, due to the lowest electrochemical reduction potential of lithium, high capacity, and lightweight nature, making it an optimal choice for constructing rechargeable metal batteries. We explored a distinctive ternary salt–solvent electrolyte formulation to demonstrate an anode-less 5 V Li-metal battery. Salt and solvent components were fine-tuned to synergistically alleviate aluminum dissolution and extend the oxidative stability up to 5.2 V (vs Li/Li+) with the Li-metal interface stabilization. In a 5 V-class cobalt-free LiNi0.5Mn1.5O4–Li anode-less cell, we attained 65 cycles within 20% capacity loss by keeping a 40% Li reserve, touted as a potential next-generation battery design. The dynamical behavior of lithium metal interfaces with cycling has been analyzed through a series of surface and bulk analysis techniques. We correlate the influence of salt formulation with the composition in the negative electrode and show that the LiF dense interface is the main cause of long cycle life.

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Publication Details

Journal
ACS Energy Letters
Published
2024-08-16
DOI
https://doi.org/10.1021/acsenergylett.4c01435
Citations
17
Primary Topic
Advanced Battery Materials and Technologies
Type
article
Field-Weighted Citation Impact
3.55

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article

Ternary Salt–Solvent Electrolytes for 5 V-Class Anode-less Li-Metal Batteries

Darsi Rambabu, Petru Apostol, Gabriella Barozzino‐Consiglio, Alexandru Vlad et al.
17 citations
ACS Energy Letters
Advanced Battery Materials and Technologies
3.55
article

Ternary Salt–Solvent Electrolytes for 5 V-Class Anode-less Li-Metal Batteries

Darsi Rambabu, Petru Apostol, Gabriella Barozzino‐Consiglio, Alexandru Vlad, Nicolò Campagnol, Shubhadeep Pal, Claude Poleunis, Da Tie, Andrii Kachmar, Mihaela Buga, Vasudeva Rao Bakuru, Xiaodong Lin, Cosmin Ungureanu
article en
17 citations

Abstract

The anode-less lithium-metal battery stands out, due to the lowest electrochemical reduction potential of lithium, high capacity, and lightweight nature, making it an optimal choice for constructing rechargeable metal batteries. We explored a distinctive ternary salt–solvent electrolyte formulation to demonstrate an anode-less 5 V Li-metal battery. Salt and solvent components were fine-tuned to synergistically alleviate aluminum dissolution and extend the oxidative stability up to 5.2 V (vs Li/Li+) with the Li-metal interface stabilization. In a 5 V-class cobalt-free LiNi0.5Mn1.5O4–Li anode-less cell, we attained 65 cycles within 20% capacity loss by keeping a 40% Li reserve, touted as a potential next-generation battery design. The dynamical behavior of lithium metal interfaces with cycling has been analyzed through a series of surface and bulk analysis techniques. We correlate the influence of salt formulation with the composition in the negative electrode and show that the LiF dense interface is the main cause of long cycle life.

ACS Energy LettersVol. 9(9)
National Institute for Research and Development of Isotopic and Molecular Technologies (RO), UCLouvain (BE)
Fonds De La Recherche Scientifique - FNRS, Fonds Wetenschappelijk Onderzoek, Chinese Government Scholarship, H2020 Marie Skłodowska-Curie Actions, H2020 Transport
Openalex Percentile: Top 7%
Advanced Battery Materials and Technologies
3.55
DOIOpen Access PDFOpenAlex
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