Rechargeable magnesium batteries enabled by conventional electrolytes with multifunctional organic chloride additives
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43924161" target="_blank" >RIV/60461373:22310/22:43924161 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S2405829721005274" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2405829721005274</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ensm.2021.11.011" target="_blank" >10.1016/j.ensm.2021.11.011</a>
Alternative languages
Result language
angličtina
Original language name
Rechargeable magnesium batteries enabled by conventional electrolytes with multifunctional organic chloride additives
Original language description
The development of a conventional electrolyte, based on commercially available magnesium (Mg) salts in organic solvents, remains one of the most challenging quests for rechargeable Mg batteries. Conventional electrolytes typically form a passivation layer on Mg metal anode, necessitating the extensive use of inorganic chloride additives such as MgCl2. Herein, for the first time, we introduce an organic chloride, tetrabutylammonium chloride (TBAC), as a multifunctional electrolyte additive for conventional magnesium triflate (Mg(OTf)(2))-based electrolytes. TBAC was found to perform three major roles: (1) enhance Mg(OTf)(2) dissociation in aprotic solvent, (2) inhibit the reduction of triflate anions through surface-adsorbed TBA +, and (3) act as a chloride source to form Mg complexes and stabilize the Mg anode-electrolyte interface. The novel electrolyte combination of TBAC and Mg(OTf)(2) in 1,2-dimethoxyethane exhibits excellent Mg plating/stripping with Coulombic efficiency of 97.7% over 200 cycles at 0.5 mA cm-(2) and 0.5 mAh cm(-2) . Postmortem analysis unveils uniform Mg deposition and stable solid electrolyte interphase formation on Mg anode, which enables reversible cycling with Mo6S8 cathode. Together with our findings on another organic chloride additive, 1-ethyl-3-methylimidazolium chloride, and in combination with different electrolyte salts and solvents, we showcase the general promise of high-performance conventional electrolytes for rechargeable Mg batteries.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10402 - Inorganic and nuclear chemistry
Result continuities
Project
<a href="/en/project/GC20-16124J" target="_blank" >GC20-16124J: Two-dimensional layered transition metal dichalcogenides/ nanostructured carbons composites for electrochemical energy storage and conversion</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Energy Storage Materials
ISSN
2405-8297
e-ISSN
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Volume of the periodical
45
Issue of the periodical within the volume
March 2022
Country of publishing house
US - UNITED STATES
Number of pages
13
Pages from-to
1120-1132
UT code for WoS article
000781899500007
EID of the result in the Scopus database
2-s2.0-85119515694