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Electrolyte/Structure-Dependent Cocktail Mediation Enabling High-Rate/Low-Plateau Metal Sulfide Anodes for Sodium Storage
Nano-Micro Letters ( IF 31.6 ) Pub Date : 2021-08-17 , DOI: 10.1007/s40820-021-00686-4
Yongchao Tang 1, 2 , Yue Wei 3 , Anthony F Hollenkamp 2 , Mustafa Musameh 2 , Aaron Seeber 2 , Tao Jin 2, 4 , Xin Pan 1 , Han Zhang 1 , Yanan Hou 1 , Zongbin Zhao 1 , Xiaojuan Hao 2 , Jieshan Qiu 5 , Chunyi Zhi 6
Affiliation  

  • Nano-dispersed SnS2 and CoS2 phases endow CSC anode with electrolyte/structure-dependent cocktail mediation effect, showing superior rate capability and evidently lowered charge plateau compared with CoS2 and SnS2/CoS2 mixture.

  • Alternative electrochemical processes between nano-dispersed different metal sulfides and Na+ carriers effectively overcome intrinsic flaws of monometallic sulfide, responsible for the lowered charge plateau of CSC.

  • As-assembled CSC//Na1.5VPO4.8F0.7 full-cell shows high-rate capability, and high discharge plateau up to 2.57 V, which is comparable to that with alloy-type anodes.



中文翻译:

电解质/结构相关的鸡尾酒调解使高速率/低高原金属硫化物阳极能够储存钠

  • 与 CoS 2和 SnS 2 /CoS 2混合物相比,纳米分散的 SnS 2和 CoS 2相赋予 CSC 负极电解质/结构依赖的鸡尾酒中介效应,表现出优异的倍率性能和明显降低的充电平台。

  • 纳米分散的不同金属硫化物和 Na +载体之间的替代电化学过程有效地克服了单金属硫化物的内在缺陷,导致 CSC 的电荷平台降低。

  • 组装后的 CSC//Na 1.5 VPO 4.8 F 0.7全电池表现出高倍率能力和高达 2.57 V 的高放电平台,这与合金型阳极相当。

更新日期:2021-08-19
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