Sulfur-Rich Molybdenum Sulfide as a Cathode Material for Room Temperature Sodium–Sulfur Batteries,ACS Applied Energy Materials

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Sulfur-Rich Molybdenum Sulfide as a Cathode Material for Room Temperature Sodium–Sulfur Batteries
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2020-07-06 00:00:00 , DOI: 10.1021/acsaem.0c01160
Melissa L. Meyerson ₁ , Philippe E. Papa _{1,

2} , Jason A. Weeks ₁ , Austin G. Paul-Orecchio ₁ , Adam Heller _{2,

3} , C. Buddie Mullins _{1,

2,

3,

4}

Affiliation

The low cost, abundance, and high capacity of sodium and sulfur make them attractive battery materials. However, formation and migration of polysulfides in sulfur batteries causes rapid capacity fade, limiting battery cycle life. Most strategies to mitigate polysulfide shuttling address migration rather than formation and require complicated or expensive synthetic steps. Here, we introduce an amorphous, sulfur-rich molybdenum sulfide as a sulfur equivalent cathode that is simple and easy to make and shows excellent cycling performance with a specific capacity of 537 mAh g^–1 at 50 mA g^–1, retaining over 200 mAh g^–1 at a rate of 1 A g^–1.

中文翻译：

富硫的硫化钼作为室温钠硫电池的阴极材料

钠，硫的低成本，丰度以及高容量使其成为有吸引力的电池材料。然而，硫电池中多硫化物的形成和迁移会导致容量快速衰减，从而限制了电池循环寿命。减轻多硫化物穿梭的大多数策略是针对迁移而不是形成，并且需要复杂或昂贵的合成步骤。在这里，我们引入一个无定形的，富含硫的硫化钼作为硫等效阴极简单且易于制造和示出了具有537毫安g的比容量优异的循环性能^-1在50mA克^-1，毫安保持超过200 g ^–1的速率为1 A g ^–1。

更新日期：2020-07-06

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