Details
| Original language | English |
|---|---|
| Article number | e70029 |
| Journal | Energy and Environmental Materials |
| Volume | 8 |
| Issue number | 5 |
| Publication status | Published - 4 Aug 2025 |
Abstract
Localized high-concentration electrolytes offer a potential solution for achieving uniform lithium deposition and a stable solid-electrolyte interface in Lithium metal batteries. However, the use of highly concentrated salts or structure-loaded diluents can result in significantly higher production costs and increased environmental burdens. Herein, a novel localized high-concentration electrolyte is developed, comprising ultra-low content (2% by mass) triethylammonium chloride as an electrolyte additive. The stable Lewis acid structure of the triethylammonium chloride molecule allows for the adsorption of numerous solvent molecules and TFSI− anions, intensifying the electrostatic interactions between lithium ions and anions. The chloride ions introduced by TC, along with TFSI− anions, integrate into the solvent sheath, forming a LiCl-rich inorganic SEI and enhancing the electrochemical performance of the lithium metal anode. The improved Li||Li cell shows excellent cycling stability for over 500 h at 1 mA cm2 with a 27 mV overpotential. This work provides insights into the impact of electrolyte additives on the electrode-electrolyte interface and Li-ion solvation, crucial for safer lithium metal battery development.
Keywords
- electrolyte additive, lithium metal anode, solvent sheath, triethylammonium chloride
ASJC Scopus subject areas
- Energy(all)
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
- General Materials Science
- Environmental Science(all)
- Water Science and Technology
- Environmental Science(all)
- Environmental Science (miscellaneous)
- Environmental Science(all)
- Waste Management and Disposal
- Energy(all)
- Energy (miscellaneous)
Sustainable Development Goals
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In: Energy and Environmental Materials, Vol. 8, No. 5, e70029, 04.08.2025.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Ultra-Low Content Triethylammonium Chloride Facilitates Localized High-Concentration Electrolytes and Formation of Inorganic Solid Electrolyte Interface
AU - Lin, Zhihua
AU - Bettels, Frederik
AU - Li, Taoran
AU - Satheesh, Sreeja K.
AU - Wu, Haiwei
AU - Ding, Fei
AU - Zhang, Chaofeng
AU - Liu, Yuping
AU - Yang, Hui Ying
AU - Zhang, Lin
N1 - Publisher Copyright: © 2025 The Author(s). Energy & Environmental Materials published by John Wiley & Sons Australia, Ltd on behalf of Zhengzhou University.
PY - 2025/8/4
Y1 - 2025/8/4
N2 - Localized high-concentration electrolytes offer a potential solution for achieving uniform lithium deposition and a stable solid-electrolyte interface in Lithium metal batteries. However, the use of highly concentrated salts or structure-loaded diluents can result in significantly higher production costs and increased environmental burdens. Herein, a novel localized high-concentration electrolyte is developed, comprising ultra-low content (2% by mass) triethylammonium chloride as an electrolyte additive. The stable Lewis acid structure of the triethylammonium chloride molecule allows for the adsorption of numerous solvent molecules and TFSI− anions, intensifying the electrostatic interactions between lithium ions and anions. The chloride ions introduced by TC, along with TFSI− anions, integrate into the solvent sheath, forming a LiCl-rich inorganic SEI and enhancing the electrochemical performance of the lithium metal anode. The improved Li||Li cell shows excellent cycling stability for over 500 h at 1 mA cm2 with a 27 mV overpotential. This work provides insights into the impact of electrolyte additives on the electrode-electrolyte interface and Li-ion solvation, crucial for safer lithium metal battery development.
AB - Localized high-concentration electrolytes offer a potential solution for achieving uniform lithium deposition and a stable solid-electrolyte interface in Lithium metal batteries. However, the use of highly concentrated salts or structure-loaded diluents can result in significantly higher production costs and increased environmental burdens. Herein, a novel localized high-concentration electrolyte is developed, comprising ultra-low content (2% by mass) triethylammonium chloride as an electrolyte additive. The stable Lewis acid structure of the triethylammonium chloride molecule allows for the adsorption of numerous solvent molecules and TFSI− anions, intensifying the electrostatic interactions between lithium ions and anions. The chloride ions introduced by TC, along with TFSI− anions, integrate into the solvent sheath, forming a LiCl-rich inorganic SEI and enhancing the electrochemical performance of the lithium metal anode. The improved Li||Li cell shows excellent cycling stability for over 500 h at 1 mA cm2 with a 27 mV overpotential. This work provides insights into the impact of electrolyte additives on the electrode-electrolyte interface and Li-ion solvation, crucial for safer lithium metal battery development.
KW - electrolyte additive
KW - lithium metal anode
KW - solvent sheath
KW - triethylammonium chloride
UR - http://www.scopus.com/inward/record.url?scp=105004203827&partnerID=8YFLogxK
U2 - 10.1002/eem2.70029
DO - 10.1002/eem2.70029
M3 - Article
AN - SCOPUS:105004203827
VL - 8
JO - Energy and Environmental Materials
JF - Energy and Environmental Materials
SN - 2575-0348
IS - 5
M1 - e70029
ER -