Gao, Jingyu Li, Yapeng Shi, Liang Li, Jingjing Zhang, Genqiang Rational Design of Hierarchical Nanotubes through Encapsulating CoSe<sub>2</sub> Nanoparticles into MoSe<sub>2</sub>/C Composite Shells with Enhanced Lithium and Sodium Storage Performance Transition-metal diselenides have been extensively studied as desirable anode candidates for both lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs) because of their high theoretical capacities. However, it is of great challenge to achieve satisfactory cycling performance, especially for larger sodium ion storage, originated from electrode deterioration upon large volume change. Herein, we reported the construction of hierarchical tubular hybrid nanostructures through encapsulating CoSe<sub>2</sub> nanoparticles into MoSe<sub>2</sub>/C composite shells via a simple two-step strategy including a hydrothermal method followed by vapor-phase selenization process. The unique tubular structure enables the highly reversible Li/Na storage with high specific capacity, enhanced cycling stability, and superior rate performance. It is indicated that the contribution of partial pseudocapacitive behavior greatly improves the rate capability for SIBs, where a high capacity retention of 81.5% can be obtained when the current densities range from 0.1 to 3 A g<sup>–1</sup> (460 mA h g<sup>–1</sup> at 0.1 A g<sup>–1</sup> vs 379 mA h g<sup>–1</sup> at 3 A g<sup>–1</sup>). This work provides an effective design rationale on transition-metal diselenide-based tubular nanostructures as superior hosts for both Li and Na ions, which could push forward the development of practical applications of transition-metal diselenide-based anodes in LIBs and SIBs. LIB;SIB;Encapsulating CoSe 2 Nanoparticles;design rationale;densities range;sodium ion storage;volume change;cycling performance;MoSe;Hierarchical Nanotubes;transition-metal diselenide-based anodes;rate capability;pseudocapacitive behavior;sodium-ion batteries;Enhanced Lithium;Na ions;capacity retention;mA;hydrothermal method;rate performance;cycling stability;vapor-phase selenization process;anode candidates;encapsulating CoSe 2 nanoparticles;Rational Design;0.1;Sodium Storage Performance Transition-metal diselenides;electrode deterioration;lithium-ion batteries;nanostructure;transition-metal diselenide-based 2018-05-25
    https://acs.figshare.com/articles/journal_contribution/Rational_Design_of_Hierarchical_Nanotubes_through_Encapsulating_CoSe_sub_2_sub_Nanoparticles_into_MoSe_sub_2_sub_C_Composite_Shells_with_Enhanced_Lithium_and_Sodium_Storage_Performance/6462965
10.1021/acsami.8b06442.s001