Silicon
(Si) is considered to be the most promising anode material
to replace graphite due to its higher theoretical capacity. Nanotechnology
has played an important role in addressing the serious volume changes
that occur during the lithium process of Si anode removal. However,
the development of Si anodes has not yet reached the industry standard
for the next generation of commercial lithium-ion batteries. Nowadays,
with the increasing requirements for battery energy density in diverse
industries, the use of silicon anode materials to increase energy
density, co-utilization of Si, graphite, new binders, and electrolytes
has become a commercially viable method to achieve high energy. Therefore,
in this review, we emphasize the necessity of using Si/graphite anodes,
new binders, and electrolytes at the same time in commercialization
and carefully review the development of Si/graphite anodes. The typical
Si anode mixed graphite electrode is discussed, and various strategies
for constructing Si/graphite composite materials are organized according
to their synthesis method. It is particularly noteworthy that we systematically
introduce the key factors for the co-utilization of Si/graphite anodes,
new binders, and electrolytes. Finally, some suggestions on the practical
application of Si/graphite anodes are given.
A new dual-ion hybrid device is successfully fabricated with a silicon carbon anode and an expanded graphite cathode and exhibits an excellent energy density.
Phosphorus-doped hollow carbon nanorods with high electronic conductivity can maintain excellent structural stability and endow outstanding electrochemical performance in sodium-based dual-ion batteries.
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