Natural nitrogen-doped multiporous carbon from biological cells as sulfur stabilizers for lithium–sulfur batteries
Natural nitrogen-doped multiporous carbon from biological cells as sulfur stabilizers for lithium–sulfur batteries
复制标题
DOI：
10.1016/j.cclet.2016.07.030
复制
发表时间：
2017-04
影响因子：
9.1
通讯作者：
Yanping Xie;Hongwei Cheng;Wei‐Mei Chai;Hong-Fei Yue;Xuan Zhang;Jian-hui Fang;Hongbin Zhao;Jiaqiang X
中科院分区：
文献类型：
--
作者：
Yanping Xie;Hongwei Cheng;Wei‐Mei Chai;Hong-Fei Yue;Xuan Zhang;Jian-hui Fang;Hongbin Zhao;Jiaqiang X
在此背景下，我们首先从可再生生物细胞中合成了一种新型的氮掺杂多孔碳材料，通过简单的化学活化与K2 CO 3。在硫浸渍之后，碳/硫复合物达到约67重量%的硫含量。该复合材料作为锂硫电池的正极材料，在0.1C下的放电容量为1410 mAh/g，容量保持率为912 mAh/g。这些优异的结果归因于微孔碳和天然掺杂氮原子的协同效应。我们相信，从低成本和可持续的生物资源中合成氮掺杂多孔碳的简便方法不仅可以应用于锂硫电池，而且可以应用于其他电极材料。
In this context, we firstly synthesized a novel nitrogen-doped multiporous carbon material from renewable biological cells through a facile chemical activation with K2CO3. After sulfur impregnation, the carbon/sulfur composite achieved a sulfur content of about 67 wt%. The C/S composite as the cathode of lithium–sulfur batteries exhibited a discharge capacity of 1410 mAh/g and good capacity retention of 912 mAh/g at 0.1C. These outstanding results were attributed to the synergy effect of microporous carbon and natural doping nitrogen atoms. We believe that the facile approach for the synthesis of nitrogen-doped multiporous carbon from the low-cost and sustainable biological resources will not only be applied in lithium–sulfur batteries, but also in other electrode materials.