Water-in-Bisalt Electrolyte with Record Salt Concentration and Widened Electrochemical Stability Window

Forero Saboya, Juan, 1992 (author): Chalmers tekniska högskola,Chalmers University of Technology

Hosseini Bab Anari, Elham, 1982 (author): Chalmers tekniska högskola,Chalmers University of Technology

Abdelhamid, Muhammad, 1987 (author): Chalmers tekniska högskola,Chalmers University of Technology

Moth-Poulsen, Kasper, 1978 (author): Chalmers tekniska högskola,Chalmers University of Technology

Johansson, Patrik, 1969 (author): Chalmers tekniska högskola,Chalmers University of Technology

(creator_code:org_t)

2019-08-12
2019
English.
In: Journal of Physical Chemistry Letters. - : American Chemical Society (ACS). - 1948-7185. ; 10:17, s. 4942-4946

Related links:: https://digital.csic...; show more...; https://research.cha...; https://research.cha...; https://doi.org/10.1...; show less...

Abstract Subject headings

Water-in-salt and water-in-bisalt electrolytes have recently attracted much attention due to their expanded electrochemical stability windows. The concentration limit of such electrolytes is constrained by the solubility of the lithium salts employed, ca. 21 m (mol kg−1) for LiTFSI (lithium bis(trifluoromethanesulfonyl)imide). By adding a second lithium salt, the total salt concentration can be increased, but the hydrogen evolution keeps limiting the application of such systems in batteries with low potential anodes. Herein we report a water-in-bisalt electrolyte with a record salt concentration (31.4 m LiTFSI + 7.9 m Li[N(CH3)2((CH2)3SO3)((CH2)4SO3)]) in which the bulky anion completely prevents the crystallization, even at such low water contents. Although the hydrogen evolution reaction is not completely suppressed, the expanded electrochemical stability window allows for low potential reactions such as aluminum−lithium alloying. The high salt concentration favors the formation of a suitable passivation layer that can be further engineered by modifying the anion structure

NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
TEKNIK OCH TEKNOLOGIER -- Annan teknik (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies (hsv//eng)
TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Annan kemiteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Other Chemical Engineering (hsv//eng)
NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)

By the author/editor: Forero Saboya, J ...; Hosseini Bab Ana ...; Abdelhamid, Muha ...; Moth-Poulsen, Ka ...; Johansson, Patri ...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Inorganic Chemis ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Chemical Enginee ...; and Other Chemical E ...

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Other Physics To ...

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Other Chemistry ...

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.