Application of high-efficiency chemical pre-lithiumdiation in high-grade energy lithium ion battery:It is well known that the construction of high energy density lithium-ion battery systems requires high capacity and low voltage negative electrode materials such as Si negative electrode and SN negative electrode, but these negative electrode materials have huge volume expansion during the lithiation process. Volume expansion results in excess lithium ion consumption, resulting in unfavorable non-reversible capacity and lower prior weeks of the whole battery. In recent years, Professor A Xinping has newly developed a simple and efficient chemical pre-lithiumdiation method to prepare lithium positive and negative electrode materials before the electrochemical cycle to compensate for the LI consumed by the SEI film formation. Kurlen efficiency [6]. For positive electrode materials such as sulfide polyacrylonitrile (S-PAN) without Li, pre-lithiuming treatment can make it chance to match the lithium negative electrode to all batteries, and avoid the use of metal lithium negative faces. Waiting for a tricky problem.
Figure 4 Schematic diagram of chemical pre-lithium Li2S-Si full battery
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