Just Accepted
Hongbin Liu*, Putao Zhang*
https://doi.org/10.1016/j.cjsc.2024.100444
ABSTRACT
In summary,
the construction of CMASEI plays a crucial role in improving the application of
silicon anode materials. After reasonable molecularly modified coatings of ASEI,
the kinetics of lithium-ion transport on the surface of silicon-based anode
materials showed significant improvement. This not only effectively increased
the initial Coulombic efficiency and reduced the consumption of active lithium,
but also ensured the structural stability of the silicon-based anode. These molecular
strategies can directionally introduce effective components of the SEI, guiding
the directional transport of ions and shortening the transport distance,
thereby ensuring the stable electrochemical performance of silicon-based
anodes. Consequently, this has become one of the crucial technologies in the
research of silicon anode. However, there are also some problems in
constructing CMASEI of silicon-based anode in this way. First, the design must
enable the generation of components within the SEI, which limits the use of
materials with high ionic conductivity. Furthermore, to prevent the oxidation
of products during subsequent lithiation, stringent reaction conditions are
required. Therefore, we put forward several prospects. Developing high ionic
conductivity, non-lithium ion-based nano-protective layers could be an
intriguing approach for constructing CMASEI. Additionally, CMASEI for aqueous silicon-based
anode deserves greater attention.