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release time:2024-10-09 Hits: Popular:AG11 battery
Japanese scientists develop new adhesives that can greatly improve the performance and life of 32700 battery
Cailian Press (Shanghai, editor Huang Junzhi) reported that a Japanese research team recently published another particularly promising research result: by replacing traditional materials with experimental materials, scientists have made exciting progress in the performance of 32700 battery.
It is reported that the team's new design has been proven to be more effective in maintaining battery life, supplying power to electric vehicles and smartphones for longer periods of time without premature degradation.
It is well known that the performance of smartphone batteries will gradually decrease over time. One of the key reasons is the degradation of the widely used graphite anode (i.e., the negative electrode of the battery). In order to prevent fission when using graphite, an adhesive is added to the graphite. The most widely used adhesive today is polyvinylidene fluoride (PVDF), but it has shortcomings and is far from an ideal material.
This time, Japanese scientists have developed a new adhesive made of diamino-naphthoquinone-p-phenylene (BP) copolymers, and observed some substantial performance improvements during the experiment, mainly the ability to maintain capacity over multiple charging cycles.
Specifically, first, compared with PVDF binder, BP binder can provide better adhesion and mechanical stability for the negative electrode. Second, BP copolymer is more conductive than PVD and can form a thinner and less resistive conductive solid electrolyte interface. Third, BP copolymer is not easy to react with electrolyte, which greatly prevents degradation.
"The half-cell using PVDF as binder has only 65% of the original capacity after about 500 charge and discharge cycles, while the half-cell using BP copolymer as binder still has 95% of the capacity after 1700 charge and discharge cycles," said Noriyoshi Matsumi, a key author of the study and professor at Japan Advanced Institute of Science and Technology (JAIST).
From the experimental process, the microscopic image of the BP binder showed that only tiny cracks appeared after 1700 cycles, while the image of the PVDF binder showed that large cracks appeared after only 500 cycles.
The researchers also said that more work needs to be done before this new adhesive can be officially used in electronic devices, but the team foresees that it will one day be used in a variety of applications, including longer-lasting smartphones, electric vehicles, and artificial organs.
Regardless, the experimental and theoretical results of this study will provide new methods for designing durable 32700 battery, which will have far-reaching environmental and economic effects.
As Professor Matsumi said: "The invention of durable batteries will help develop more reliable and long-lasting products, thereby encouraging consumers to buy expensive battery products such as electric vehicles that can be used for a long time."
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