Nanowire Li-ion battery. Is there a sense?

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SUMMARY

The discussion centers on the development of nanowire lithium-ion batteries featuring silicon anodes, which can absorb eight times more lithium ions than traditional graphite anodes. However, participants highlight that the primary limitation of lithium-ion batteries lies in the cathode, which typically has a specific capacity of only 100-180 mA·h/g compared to the anode's 372 mA·h/g. Increasing the anode's capacity without enhancing the cathode's performance may not yield significant benefits, as calculations suggest that reducing the anode's mass only marginally decreases the overall battery mass. The conversation also touches on the potential for electron exchange processes, such as the triboelectric effect, in energy storage applications.

PREREQUISITES
  • Understanding of lithium-ion battery chemistry
  • Familiarity with anode and cathode materials
  • Knowledge of specific capacities in battery technology
  • Basic principles of energy storage mechanisms
NEXT STEPS
  • Research advancements in silicon anode technology for lithium-ion batteries
  • Explore methods to enhance cathode performance in lithium-ion batteries
  • Investigate the triboelectric effect and its applications in energy storage
  • Learn about pseudocapacitors and their role in battery technology
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Engineers, researchers, and developers in the fields of battery technology, energy storage systems, and materials science will benefit from this discussion.

Stanley514
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Recently, there is a new type of battery is developing that has silicon anode which is able to absorb 8 times more Li-ions than graphite anode.
http://en.wikipedia.org/wiki/Nanowire_battery"
But if I no make mistake the main limitation of Li-ion battery is its cathode, not anode.
Usual graphite anode has specific capacity 372 mA·h/g while typical cathode 100-180mA·h/g. So there seem to be no sense to increase capacity of anode unless we have much more capacitive cathode.
http://en.wikipedia.org/wiki/Lithium-ion_battery"
 
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If you can make 8 times lighter anode final mass of the battery will be still lower, even if the cathode has been not changed.
 
If you can make 8 times lighter anode final mass of the battery will be still lower, even if the cathode has been not changed.

Even if yes,maybe just a few persents.Could you provide some approximate calculations?
For exampe, if in usual Li-ion battery anode takes 1/4 of space,cathode 2/4 and electrolyte 1/4,then making anode 8 times smaller saves us only 1/5 of total space.
Probably,it will not be worth of new expensve technologies to produce it.
Maybe, for some space applications only.

Also I whish to know if there is some electron exchange processes which are not associated
with actual chemical changes.I know there exist some pseudocapacitors but there is still some chemical processes occur what limits the cycle life.What about triboelectric effect when electrons transfer from one material to another?Could it be used as energy storage?
 

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