Electrochemical investigation reveals mixed lithium-ion diffusion in tin-carbon nano-lamellar anodes, suggesting a robust strategy to overcome volumetric expansion in lithium-ion batteries.
, illustrates the predominance of the pseudo-capacitance arising from interface reaction. By coupling electrochemical impedance spectroscopy, galvanostatic intermittent titration technique, and linear sweep voltammetry, the mixed lithium-ion diffusion effect was proposed to explain the remarkable adaptability of these Sn-based anode materials for cycling performance across a wide range of specific currents. This work provides a new intention for resolving the drastic volumetric expansion and unsatisfactory dynamic activity of Sn-based anode materials.
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Xie et al. (2025) studied this question.
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