Hongbin Liu*, Putao Zhang*
Chin. J. Struct. Chem., 2025, 44(3), 100444. DOI: 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
coating 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 the
effective components of 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.