LI-ION BATTERY CELL USING IMPROVED ANODE CURRENT COLLECTOR
摘要:
A lithium-ion battery and methods thereof are disclosed. In an aspect, the lithium-ion battery includes an anode component, a cathode component, a separator, and an electrolyte. The anode component includes an anode current collector and a respective anode coating on each side of the anode current collector. An anode coating includes composite particles including carbon and silicon. A mass fraction of the silicon in the composite particles of the anode coatings may be in a range of about 5 wt. % to about 70 wt. % of the anode coatings. The anode component undergoes a maximum areal expansion (Amax) during the multiple charging and discharging cycles. The anode current collector comprises a copper foil, the copper foil being characterized, before the respective anode coatings are formed thereon, by an ultimate tensile stress (UTS) and a strain at the UTS (εUTS).
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