Role of Mixed Inorganic Additives in Controlling the Dendrite Growth in Lithium Metal Anodes

Role of Mixed Inorganic Additives in Controlling the Dendrite Growth in Lithium Metal Anodes Irfan H http://orcid.org/0000-0001-6856-3668 Shanmugharaj A.M.

Here we demonstrate to suppress the dendrite growth and stabilize the LMA using Lithium difluoro(oxalato)borate (LiDFOB) and tetraethyl orthosilicate (TEOS) as primary and secondary additives in commercial LiPF 6 salt electrolyte. While the incorporation of LiDFOB additive potentially reduced the overpotential values, thereby improving the cycling stability in comparison to commercial electrolyte in Li/Li symmetric cell, the performance characteristics dramatically enhanced on using TEOS as the secondary electrolyte additive. In addition, rate capabilities of the NMC/Li full cells are apparently higher on using the additives in the electrolyte system. The profound effect is attributed to the formation of film layer on the lithium surface, which eventually regulates the lithium deposition during the electrochemical cycling. Thus, incorporation of multiple inorganic additives in the commercial electrolyte system paves a way in making high performance lithium-metal batteries.
04 24 2022 12357 12365 http://dx.doi.org/10.1088/crossmark-policy iopscience.iop.org Role of Mixed Inorganic Additives in Controlling the Dendrite Growth in Lithium Metal Anodes ECS Transactions paper © 2022 ECS - The Electrochemical Society https://iopscience.iop.org/page/copyright https://iopscience.iop.org/info/page/text-and-data-mining 10.1149/10701.12357ecst https://iopscience.iop.org/article/10.1149/10701.12357ecst https://iopscience.iop.org/article/10.1149/10701.12357ecst/pdf https://iopscience.iop.org/article/10.1149/10701.12357ecst/pdf https://iopscience.iop.org/article/10.1149/10701.12357ecst https://iopscience.iop.org/article/10.1149/10701.12357ecst/pdf