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In today's society, lithium batteries are a necessary power supply for mobile electronic devices, consisting of positive electrodes, negative electrodes, separators, electrolytes, etc.
, and their key performance indicators are determined
by the electrochemical performance of positive electrode materials.
LiFePO4 is a recognized cathode material, and in order to improve its electrochemical performance, there has been a long-term effort to shorten the diffusion distance of lithium ions, that is, to reduce the size
of the direction.
Recent studies have shown that electrodes are composed of a large number of particles, and their electrochemical performance mainly depends on the proportion
of particles participating in electrochemical reactions during the charging and discharging process to the total number of particles.
Therefore, how to obtain LiFePO4 with a high proportion of activated particles is a key problem
in the study of cathode materials.
In response to this problem, Wang Xiaohui's research group of the High Performance Ceramic Materials Research Department of Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, prepared 12nm thick ultra-thin nanosheets
for the first time in the world by creating an acidic synthesis environment with extreme water shortage.
This work provides a new method and perspective for further improving the rate performance of lithium batteries in the future, that is, not only can the diffusion distance of lithium ions be shortened by reducing the scale of the direction, but also the proportion of activated particles of lithium batteries can be increased by adjusting the size of the direction to improve the rate performance
of lithium batteries.
In today's society, lithium batteries are a necessary power supply for mobile electronic devices, consisting of positive electrodes, negative electrodes, separators, electrolytes, etc.
, and their key performance indicators are determined
by the electrochemical performance of positive electrode materials.
LiFePO4 is a recognized cathode material, and in order to improve its electrochemical performance, there has been a long-term effort to shorten the diffusion distance of lithium ions, that is, to reduce the size
of the direction.
Recent studies have shown that electrodes are composed of a large number of particles, and their electrochemical performance mainly depends on the proportion
of particles participating in electrochemical reactions during the charging and discharging process to the total number of particles.
Therefore, how to obtain LiFePO4 with a high proportion of activated particles is a key problem
in the study of cathode materials.
In response to this problem, Wang Xiaohui's research group of the High Performance Ceramic Materials Research Department of Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, prepared 12nm thick ultra-thin nanosheets
for the first time in the world by creating an acidic synthesis environment with extreme water shortage.
This work provides a new method and perspective for further improving the rate performance of lithium batteries in the future, that is, not only can the diffusion distance of lithium ions be shortened by reducing the scale of the direction, but also the proportion of activated particles of lithium batteries can be increased by adjusting the size of the direction to improve the rate performance
of lithium batteries.
