A Sugar-Derived Room-Temperature Sodium Sulfur Battery with Long Term Cycling Stability,Nano Letters

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A Sugar-Derived Room-Temperature Sodium Sulfur Battery with Long Term Cycling Stability
Nano Letters ( IF 9.6 ) Pub Date : 2017-02-09 00:00:00 , DOI: 10.1021/acs.nanolett.6b05172
Rachel Carter ₁ , Landon Oakes ₁ , Anna Douglas ₁ , Nitin Muralidharan ₁ , Adam P. Cohn ₁ , Cary L. Pint ₁

Affiliation

We demonstrate a room-temperature sodium sulfur battery based on a confining microporous carbon template derived from sucrose that delivers a reversible capacity over 700 mAh/g_S at 0.1C rates, maintaining 370 mAh/g_S at 10 times higher rates of 1C. Cycling at 1C rates reveals retention of over 300 mAh/g_S capacity across 1500 cycles with Coulombic efficiency >98% due to microporous sulfur confinement and stability of the sodium metal anode in a glyme-based electrolyte. We show sucrose to be an ideal platform to develop microporous carbon capable of mitigating electrode–electrolyte reactivity and loss of soluble intermediate discharge products. In a manner parallel to the low-cost materials of the traditional sodium beta battery, our work demonstrates the combination of table sugar, sulfur, and sodium, all of which are cheap and earth abundant, for a high-performance stable room-temperature sodium sulfur battery.

中文翻译：

具有长期循环稳定性的糖衍生室温钠硫电池

我们展示了一种室温钠硫电池，该电池基于源自蔗糖的封闭微孔碳模板，可在0.1C速率下提供700 mAh / g _S的可逆容量，在1C的10倍速率下可保持370 mAh / g _S的可逆容量。以1C的速率循环显示保留超过300 mAh / g _S由于微孔硫限制和基于甘醇二甲醚的电解质中钠金属阳极的稳定性，因此在1500个循环中的容量达到了98％，库仑效率> 98％。我们证明蔗糖是开发能够减轻电极-电解质反应性和可溶性中间放电产物损失的微孔碳的理想平台。我们的工作与传统的钠β电池的低成本材料平行，展示了食糖，硫和钠的组合，这些糖便宜且土质丰富，可实现高性能，稳定的室温钠盐。硫磺电池。

更新日期：2017-02-09

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