Electrospinning Machine | Bio-inspired spore-like CoSe2@CNFs heterostructure enabling ultra-stable and high-rate sodium-ion batteries 2025-09-30
The reaction mechanism of sodium-ion batteries (SIBs) is similar to that of lithium-ion batteries (LIBs). Due to naturally abundant sodium resources, cost-effectiveness, and enhanced safety, SIBs have gained significant research attention as promising alternatives to LIBs. However, compared to Li+, the larger ionic radius of Na+ hinders ion diffusion kinetics during charge and discharge processes, while also inducing significant volume expansion in electrode materials. This expansion typically triggers mechanical degradation (such as particle pulverization or structural collapse), ultimately manifesting as rapid capacity decay, poor cycling stability, and subpar rate capability in SIBs. These intrinsic challenges highlight the urgent need to develop novel anode materials with robust cycling durability.