Achieving Safe and Stable Lithium-Based Batteries via Molecular Dipole Interactions
Source abstract
Abstract
The lithium metal battery technology, utilizing a lithium metal anode and high-voltage cathodes, offers high power density, but faces challenges such as dendrite growth, dead lithium, and poor interfacial dynamics. Here, a nonflammable electrolyte is proposed based on dipole interactions between HTFP and DME solvents, enhancing Li + -FSI – coordination and reducing Li + desolvation energy. The dipole interaction lowers the LUMO energy of solvated FSI –, promoting the formation of a stable interfacial phase and efficient lithium deposition and stripping. Consequently, Li||NCM811 cells exhibit ∼90% capacity retention over 500 cycles with >99.5% Coulombic efficiency and also perform well at −30 °C. In addition, commercial graphite||NCM523 pouch cells achieve 90% capacity retention after 500 cycles and high safety.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Materials Science and Engineering and SUSTech Energy Institute for Carbon Neutrality
Southern University of Science and Technology
State Key Laboratory of Power Metallurgy
Central South University
The Engineering and Research Center for Integrated New Energy Photovoltaics and Energy Storage Systems of Hunan Province and School of Electrical Engineering
University of South China
Shenzhen Putai Technology Co., Ltd.
Funding
Science, Technology and Innovation Commission of Shenzhen Municipality · Southern University of Science and Technology
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