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Scientists at Tokyo Institute of Technology have examined the mechanisms behind the resistance at the electrode-electrolyte interface of all-solid-state batteries. Their findings will aid in the development of much better Li-ion batteries with very fast charge/discharge rates.
Designing and improving lithium-ion (Li-ion) batteries is crucial for extending the limits of modern electronic devices and electric vehicles because Li-ion batteries are virtually ubiquitous. Scientists at Tokyo Institute of Technology (Tokyo Tech), led by Prof. Taro Hitosugi, had previously reported a new type of all-solid-state battery, also based on lithium ions, which overcame one of the major problems of those batteries: high resistance at the interface between the electrodes and the electrolytes that limits fast charging/discharging.
Devices - Batteries - Regards - Mechanism - Interface
Although the devices they produced were very promising and were much better than conventional Li-ion batteries in some regards, the mechanism behind the reduced interface resistance was unclear. It has been difficult to analyze the buried interfaces in all-solid-state batteries without damaging their layers. Therefore, Hitosugi and his team of researchers again investigated all-solid-state batteries to shed light on this topic. They suspected that crystallinity (which indicates how well-ordered and periodic a solid is) at the electrode-electrolyte interface played a key role in defining interface resistance.
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