Enabling uniform Li deposition behavior with dynamic electrostatic shield by the single effect of potassium cation additive for dendrite-free lithium metal batteries

Han, Ji Woo; Park, Bo Keun; Kim, Yong Min; Sim, Yoon-Bo; Ho, Van‐Chuong; Mun, Junyoung; Kim, Ki Jae

doi:10.1039/d3qm00392b

Mater. Chem. Front.

2023

DOI: 10.1039/d3qm00392b

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Enabling uniform Li deposition behavior with dynamic electrostatic shield by the single effect of potassium cation additive for dendrite-free lithium metal batteries

Ji Woo Han

Bo Keun Park

Yong Min Kim

et al.

Abstract: The introduction of optimized amounts (0.010 M) of KTFSI additives results in preferential adsorption at the tip areas to form an electrostatic shielding effect, so that Li+ grows uniformly on other flat regions.

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2024

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Cited by 3 publications

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Bespoke Dual‐Layered Interface Enabled by Cyclic Ether in Localized High‐Concentration Electrolytes for Lithium Metal Batteries

Kim,

Park,

Kang

et al. 2024

Adv Funct Materials

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Lithium metal anodes (LMAs) are regarded as a highly promising candidate for next‐generation batteries owing to their exceptional energy density. Nevertheless, the instability of the interphase poses significant safety and degradation challenges for LMAs, thereby impeding their feasibility for commercial application. Herein, based on the lessons learned from the stable solid‐electrolyte‐interface (SEI) layer formed with ethylene carbonate (EC) solvents for graphite anodes, the effects of cyclic‐ethers are systematically investigated in localized high concentration electrolytes (LHCEs) using tetrahydrofuran (THF), 1,3‐dioxolane (DOL), and 1,4‐epoxybuta‐1,3‐diene (Furan) as co‐solvents. When using DME and THF as co‐solvents, the most stable interface, a LiF‐rich SEI layer with a polymeric outer‐layer, is formed, elongating the cyclability of the Li | Li symmetric cells up to 1200 h at 1 mA cm−2 and 1 mAh cm−2. This research gives useful insight into how to enhance the mechanical strength of the SEI layer with polymeric compounds by incorporating cyclic‐ether co‐solvents in LHCEs.

show abstract

Bespoke Dual‐Layered Interface Enabled by Cyclic Ether in Localized High‐Concentration Electrolytes for Lithium Metal Batteries

Kim,

Park,

Kang

et al. 2024

Adv Funct Materials

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show abstract

Facile self-assembled monolayer deposition on copper foil for high-performance lithium-metal batteries

Chae,

Lee,

Park

et al. 2024

Electrochimica Acta

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Bismuth oxychloride nanosheets anchored aramid separator with sponge-like structure for improved lithium-ion battery performance

Sun,

Chen,

et al. 2024

Journal of Colloid and Interface Science

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Enabling uniform Li deposition behavior with dynamic electrostatic shield by the single effect of potassium cation additive for dendrite-free lithium metal batteries

Abstract: The introduction of optimized amounts (0.010 M) of KTFSI additives results in preferential adsorption at the tip areas to form an electrostatic shielding effect, so that Li+ grows uniformly on other flat regions.

Cited by 3 publications

References 40 publications

Bespoke Dual‐Layered Interface Enabled by Cyclic Ether in Localized High‐Concentration Electrolytes for Lithium Metal Batteries

Bespoke Dual‐Layered Interface Enabled by Cyclic Ether in Localized High‐Concentration Electrolytes for Lithium Metal Batteries

Facile self-assembled monolayer deposition on copper foil for high-performance lithium-metal batteries

Bismuth oxychloride nanosheets anchored aramid separator with sponge-like structure for improved lithium-ion battery performance

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