Shulou(Shulou.com)11/24 Report--

CTOnews.com, August 29, according to the China Science News, recently, Zhang Yunxia, a researcher at the Institute of solid State Physics of Hefei Institute of material Science, Chinese Academy of Sciences, and Han Miaomiao, an associate professor of Huzhou normal University, have adopted a simple "one stone, three birds" solid-state sintering strategy, which can effectively recover and upgrade waste lithium cobalt battery cathode materials to high-performance high-pressure lithium cobalt oxide cathode materials.

Recently, the relevant research results were published in Advanced Energy Materials, CTOnews.com partners can go to check the details.

According to the summary of the paper, in the face of the coming tide of decommissioned lithium-ion batteries (LIB), it is urgent to explore effective regeneration and upgrade recycling strategies to alleviate the shortage of resources, solve environmental pollution and meet the demand for high energy density cathode materials.

In this paper, a simple and unconstructive one-pot solid state sintering method is proposed, which can realize the triple effect coupling of composition / structure defect repair, external surface reconstruction and element doping, and achieve the effect of "one stone and three birds". The waste lithium cobalt oxide was upgraded to high pressure lithium cobalt oxide cathode material.

The high voltage lithium cobalt oxide cathode material obtained from the figure source Pixabay has a capacity of 188.2 Ma / g at a cut-off voltage of 4.5V; and the material has excellent cycle performance, with a capacity retention rate of 92.5% after 100 cycles and 86.4% after 300 cycles.

At the same time, the waste lithium cobalt oxide cathode materials from different manufacturers or different failure degrees can be effectively upgraded to high performance high pressure lithium cobalt oxide cathode materials, which proves that the solid phase sintering strategy of "one stone and three birds" is universal.

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