Compared to the rapid development of the screen, processor performance technology, and flash memory chips, the lithium battery life is still the “top of Achilles†for electronic devices.
In terms of components, the lithium battery consists of a positive electrode, a negative electrode, a separator, an electrolyte, etc. The key performance indicators (such as rate performance and cycle life) are determined by the electrochemical properties of the positive electrode material, among which LiFePO4 is a recognized positive electrode material.
According to the report of the Institute of Metals of the Chinese Academy of Sciences, the research team of the High Performance Ceramics Research Department of the Shenyang Materials Science National (Joint) Laboratory Wang Xiaohui's research group has prepared 12nm thick for the first time in the world by creating an extremely water-short acidic synthetic environment on the basis of previous research. The [100]-oriented LiFePO4 ultrathin nanosheets.
The significance of this nanosheet electrode lies in the smallest voltage gap so far, which increases the proportion of activated particles.
However, we know that the electrode is composed of a large number of particles, and its electrochemical performance mainly depends on the proportion of particles (activated particles) that participate in the electrochemical reaction during charge and discharge processes to the total number of particles.
According to the Chinese Academy of Sciences, the electrode has excellent rate performance and cycle life, and at 10C (60 minutes/10=6 minutes) charge and discharge rate, it can maintain 90% of the initial capacity after 1000 cycles. At 20C charge-discharge rate, the capacity can still reach 72% of the theoretical capacity.
It is generally believed that this research provides a new perspective and method for improving the capacity and life of lithium batteries and improving the life of electronic devices.
Reflecting Mirror include metal mirrors and dielectric mirrors.
Reflecting Mirror,Silver Plated Mirror,Silver Plated Compact Mirror,Silver Flash Mirror Coating
Changchun Champion Optics Co.,Ltd , https://www.champion-optics.com