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- W2912396491 abstract "Abstract Anodes involving conversion and alloying reaction mechanisms are attractive for potassium‐ion batteries (PIBs) due to their high theoretical capacities. However, serious volume change and metal aggregation upon potassiation/depotassiation usually cause poor electrochemical performance. Herein, few‐layered SnS 2 nanosheets supported on reduced graphene oxide (SnS 2 @rGO) are fabricated and investigated as anode material for PIBs, showing high specific capacity (448 mAh g −1 at 0.05 A g −1 ), high rate capability (247 mAh g −1 at 1 A g −1 ), and improved cycle performance (73% capacity retention after 300 cycles). In this composite electrode, SnS 2 nanosheets undergo sequential conversion (SnS 2 to Sn) and alloying (Sn to K 4 Sn 23 , KSn) reactions during potassiation/depotassiation, giving rise to a high specific capacity. Meanwhile, the hybrid ultrathin nanosheets enable fast K storage kinetics and excellent structure integrity because of fast electron/ionic transportation, surface capacitive‐dominated charge storage mechanism, and effective accommodation for volume variation. This work demonstrates that K storage performance of alloy and conversion‐based anodes can be remarkably promoted by subtle structure engineering." @default.
- W2912396491 created "2019-02-21" @default.
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- W2912396491 date "2019-02-05" @default.
- W2912396491 modified "2023-10-14" @default.
- W2912396491 title "Few‐Layered Tin Sulfide Nanosheets Supported on Reduced Graphene Oxide as a High‐Performance Anode for Potassium‐Ion Batteries" @default.
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- W2912396491 doi "https://doi.org/10.1002/smll.201804806" @default.
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