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Abstract Owing to the high theoretical capacities, abundance and friendly environment, Sn-based materials is one of the most prospective anode materials for lithium ion batteries. However, poor cycling stability and… Click to show full abstract
Abstract Owing to the high theoretical capacities, abundance and friendly environment, Sn-based materials is one of the most prospective anode materials for lithium ion batteries. However, poor cycling stability and low rate capability have limited its practical applications. Therefore, a novel mesoporous Sn@C composites has been fabricated via freeze-drying method with alginate as precursor. As a result, the mesoporous Sn@C composite exhibits an outstanding rate capacity (406.36 mAhg−1 even at 5000mAg-1) and remarkable long-term cycling stability (1116.3 mAhg−1 at 1Ag-1 after 550 cycles). The improved property is due to the coefficient of the mesoporous structure, ultrafine Sn nanoparticles and abundant carbon wrapping.
Journal Title: Colloids and Surfaces A: Physicochemical and Engineering Aspects
Year Published: 2020
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