Study of Anode Electrode Design for Fast-charging Lithium-ion Battery
In order to resolve the technical contradiction between high volume energy density and fast-charging in lithium-ion battery,two groups of anode electrodes based on coated graphite and double layer electrode structure were designed.One group is the mixture of coated graphite and un-coated graphite,the other group is the double layer electrode manufactured by dual-layer coating technology,the top layer is coated graphite and the bottom layer is un-coated graphite.Pouch cells were manufactured with these two groups of electrodes.The internal resistance,charging speed and cycle performance of these two groups of pouch cells was tested in order to study the effect of electrode design on the cell performance.Results illustrate that the double layer electrode has better charge speed and cycle life performance and is more suitable for fast-charging lithium-ion battery.
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