−55℃仍能稳定循环！电池大佬王春生，最新Nature Chemistry！
Merged summary
TL;DR - A Nature Chemistry study introduces a solvent-bridged electrolyte that enables high-energy silicon-anode lithium-ion batteries to cycle under fast charging and temperatures as low as −55°C. It addresses the usual trade-off between forming a durable LiF-rich interface and maintaining high ionic conductivity.
- A cyclic ether bridges Li⁺ and PF₆⁻, promoting a dense, LiF-rich solid electrolyte interphase without strong direct ion pairing.
- A linear ether suppresses crystallization and broadens the electrolyte’s usable temperature range.
- Micron-scale silicon anodes cycled stably above 4C, from −20°C to −55°C, and under lithium-plating conditions.
- μSi‖NMC811 full cells demonstrated fast-charging capability and durable low-temperature cycling.
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−55℃仍能稳定循环！电池大佬王春生，最新Nature Chemistry！
TL;DR - A Nature Chemistry study introduces a solvent-bridged electrolyte that enables high-energy silicon-anode lithium-ion batteries to cycle under fast charging and temperatures as low as −55°C. It addresses the usual trade-off between forming a durable LiF-rich interface and maintaining high ionic conductivity.
- A cyclic ether bridges Li⁺ and PF₆⁻, promoting a dense, LiF-rich solid electrolyte interphase without strong direct ion pairing.
- A linear ether suppresses crystallization and broadens the electrolyte’s usable temperature range.
- Micron-scale silicon anodes cycled stably above 4C, from −20°C to −55°C, and under lithium-plating conditions.
- μSi‖NMC811 full cells demonstrated fast-charging capability and durable low-temperature cycling.