AA Carbon battery.Tesla and partners discover new technical route for lithium batteries

　　According to foreign media reports, Tesla’s battery research team and partners published a new research report, saying that they have discovered a new lithium battery technology with higher energy density and more stability than solid-state batteries, which may change the next stage of power batteries. The development path of technology. Previously, many battery research institutions have regarded solid-state batteries as their first choice for the next stage, and energy density is currently the most important technical parameter for power batteries.

　　The full name of this technical report is: LiDFOB/LiBF4 liquid electrolyte anodeless lithium metal battery research report. The core information shows that many previous studies are not optimistic about the next stage of lithium metal batteries, believing that the traditional liquid electrolytes used in batteries must be replaced by solid electrolytes to maintain the lifespan and high energy density required for long-term stable cycles. However, in the latest experiments, it was found that an anode-free lithium metal battery using LiDFOB/LiBF4 liquid electrolyte can still retain 80% of the battery capacity and have high stability after 90 charge and discharge cycles, and its energy density is not the same. Less powerful than solid-state batteries.

　　The report also mentions how to solve the problem of replacing traditional graphite anodes with lithium metal without having to use a solid electrolyte. The report shows that another potential way to realize lithium metal anodes is to use solid electrolytes, which is considered by many studies to be the most feasible technical means in the future. However, current solid electrolytes cannot achieve a stable dendrite-free state (stability) after multiple charges and discharges. At the same time, there are also problems in large-scale mass production. Production lines often require billions of dollars in investment. If the traditional liquid electrolyte solution of LiDFOB/LiBF4 liquid electrolyte is used, existing manufacturing equipment can quickly commercialize and mass-produce this new high-energy-density battery while satisfying safety, density, and lifespan. (Source: electrek; Text/Autohome Yao Jia)

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