Hybrid NiCo2O4‐NiCo2S4 Nanoflakes as High‐Performance Anode Materials for Lithium‐Ion Batteries,ChemistrySelect

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Hybrid NiCo2O4‐NiCo2S4 Nanoflakes as High‐Performance Anode Materials for Lithium‐Ion Batteries
ChemistrySelect ( IF 1.9 ) Pub Date : 2018-02-27 , DOI: 10.1002/slct.201702919
Shipra Raj ₁ , Yifan Dong _{2,

3} , Pradip Kar ₁ , Liqiang Mai ₃ , Song Jin ₂ , Poulomi Roy _{1,

4}

Affiliation

The hybrid electrode with the combination of NiCo₂O₄ of inverse spinel structure and more conducting NiCo₂S₄ of normal spinel structure has been developed for next generation Li‐ion batteries. The hybrid nanostructures with the accessibility of both NiCo₂O₄ as well as NiCo₂S₄ showed almost 2‐fold better performance compared to pristine NiCo₂O₄. Apart from the doubled performance for hybrid materials, a significant cycling stability with 91.6% coulombic efficiency was achieved over 200 cycles. Such a high storage performance for the hybrid materials can be attributed not only to their normal spinel/inverse spinel combination, but also to the binder‐free direct deposition of materials on to the conductive 3D open Ni‐frame resulting high electrical conductivity and easy ionic diffusion.

中文翻译：

混合NiCo2O4‐NiCo2S4纳米薄片作为锂离子电池的高性能负极材料

已经为下一代锂离子电池开发了具有反尖晶石结构的NiCo ₂ O ₄和更具导电性的正常尖晶石结构的NiCo ₂ S ₄的混合电极。与原始NiCo ₂ O ₄相比，具有NiCo ₂ O ₄和NiCo ₂ S ₄可及性的杂化纳米结构的性能几乎提高了2倍。。除了混合材料的性能提高一倍外，在200个循环中，循环稳定性达到了91.6％的库仑效率。混合材料的如此高的存储性能不仅可归因于其正常的尖晶石/反尖晶石组合，而且可归因于无粘合剂的材料直接沉积在导电的3D开放式Ni框架上，从而获得了高电导率和易离子性扩散。

更新日期：2018-02-27

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