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Recently, the research group of Toyota North American Research Institute has successfully developed a new lithium battery nanosulfur cathode material
.
At present, Toyota North American Research Institute has published papers
in the journal Energy and Environmental Science of the Royal Society of Chemistry.
In the paper, the researchers point out that the new nanosulfur cathode material can operate at a high rate of 2C and can complete more than 500 charge-discharge cycles, with a coulomb efficiency (i.
e.
, charge-discharge efficiency) of almost 100%.
It is understood that the new lithium battery nanosulfur cathode material adopts a truffle-like structure, which includes sulfur particles embedded in hollow carbon nanospheres and sealed flexible laminated (LBL) nanomembrane carbon
conductors.
During the entire chemical reaction, the formation of an orderly supramolecular structure for the surface properties of the nanosulfur cathode material is greatly affected
by the fact that the carbon conductors of the laminated nano-membrane can be combined by themselves.
Any material that is adhesive and can react with solvents can be converted into a multilayer structure
by lamination.
The above results show that for other low conductivity battery cathodes, this new nano-sulfur cathode material will become an ideal solution
in the future.
Lithium battery nano-sulfur cathode materials can bring a theoretical capacity of up to 1672 mA/g, which is attractive
for next-generation batteries.
However, in practical applications, problems such as high resistance, low load active materials, and polysulfide decomposition in the electrolyte during charging and discharging still pose challenges, which will lead to a decrease in coulomb efficiency, accelerated battery capacity loss, and self-discharge phenomenon
.
At the same time, the new structure adopted by the Toyota North American Research Institute research group in lithium battery nanosulfur cathode materials can also inhibit the decomposition of intermediate polysulfides and reduce the formation of carbon conductors
.
Recently, the research group of Toyota North American Research Institute has successfully developed a new lithium battery nanosulfur cathode material
.
At present, Toyota North American Research Institute has published papers
in the journal Energy and Environmental Science of the Royal Society of Chemistry.
In the paper, the researchers point out that the new nanosulfur cathode material can operate at a high rate of 2C and can complete more than 500 charge-discharge cycles, with a coulomb efficiency (i.
e.
, charge-discharge efficiency) of almost 100%.
It is understood that the new lithium battery nanosulfur cathode material adopts a truffle-like structure, which includes sulfur particles embedded in hollow carbon nanospheres and sealed flexible laminated (LBL) nanomembrane carbon
conductors.
During the entire chemical reaction, the formation of an orderly supramolecular structure for the surface properties of the nanosulfur cathode material is greatly affected
by the fact that the carbon conductors of the laminated nano-membrane can be combined by themselves.
Any material that is adhesive and can react with solvents can be converted into a multilayer structure
by lamination.
The above results show that for other low conductivity battery cathodes, this new nano-sulfur cathode material will become an ideal solution
in the future.
Lithium battery nano-sulfur cathode materials can bring a theoretical capacity of up to 1672 mA/g, which is attractive
for next-generation batteries.
However, in practical applications, problems such as high resistance, low load active materials, and polysulfide decomposition in the electrolyte during charging and discharging still pose challenges, which will lead to a decrease in coulomb efficiency, accelerated battery capacity loss, and self-discharge phenomenon
.
At the same time, the new structure adopted by the Toyota North American Research Institute research group in lithium battery nanosulfur cathode materials can also inhibit the decomposition of intermediate polysulfides and reduce the formation of carbon conductors
.
