| 用于锂硫电池高效硫载体的Co-N-C@KB复合材料的规模化制备策略 |
| |
| 引用本文： | 陆小祥,黎天宝,涂飞跃,李中良,朱徐锟,孙灿,靳亚超,宋力,张明道,曹晖.用于锂硫电池高效硫载体的Co-N-C@KB复合材料的规模化制备策略[J].无机化学学报,2021,37(6):1125-1134. |
| |
| 作者姓名： | 陆小祥 黎天宝 涂飞跃 李中良 朱徐锟 孙灿 靳亚超 宋力 张明道 曹晖 |
| |
| 作者单位： | 南京信息工程大学环境科学与工程学院, 江苏省大气环境监测与污染控制重点实验室, 大气环境与装备技术协同创新中心, 南京 210044;长沙矿冶研究院有限公司, 长沙 410012 |
| |
| 基金项目： | 国家自然科学基金（No.21905139，51902166）资助。 |
| |
| 摘 要： | 硫正极较差的性能严重阻碍了锂硫电池的商业化进程，这些因素包括较低的导电能力以及在促进多硫化物转化方面较差的催化活性。我们开发了一种基于配体调控合成和低温热解的规模化策略来制备高效的正极复合材料（Co-N-C@KB），这种材料由富含Co-N-C活性位点的科琴黑（KB）组成。原子级分散的Co-N-C活性位点被证明有利于多硫化物在正极的转化，因而可以提高锂硫电池的容量和循环寿命。基于此，Co-N-C@KB作为正极可以使锂硫电池获得高达1 442 mAh·g-1的初始放电容量，并且该电池在长时间的稳定性测试中具有出色的容量保持能力。
|
| 关 键 词： | 锂硫电池 原子级分散的催化剂 碳材料 硫载体 吸附 |
| 收稿时间： | 2021/1/17 0:00:00 |
| 修稿时间： | 2021/3/20 0:00:00 |
Scale-Up Strategy to Develop Highly-Effective Co-N-C@KB Composites as Sulfur Host for Lithium-Sulfur Battery |
| |
| LU Xiao-Xiang,LI Tian-Bao,TU Fei-Yue,LI Zhong-Liang,ZHU Xu-Kun,SUN Can,JIN Ya-Chao,SONG Li,ZHANG Ming-Dao,CAO Hui.Scale-Up Strategy to Develop Highly-Effective Co-N-C@KB Composites as Sulfur Host for Lithium-Sulfur Battery[J].Chinese Journal of Inorganic Chemistry,2021,37(6):1125-1134. |
| |
| Authors: | LU Xiao-Xiang LI Tian-Bao TU Fei-Yue LI Zhong-Liang ZHU Xu-Kun SUN Can JIN Ya-Chao SONG Li ZHANG Ming-Dao CAO Hui |
| |
| Institution: | School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing 210044, China;Changsha Research Institute of Mining and Metallurgy Co. Ltd, Changsha 410012, China |
| |
| Abstract: | The commercialization process of Li-S battery is seriously impeded by the poor performance of sulfur cathode, including the low conductivity and dissatisfactory activity for facilitating the polysulfide conversion. In this work, we developed a scale-up method to synthesize an efficient cathode material (Co-N-C@KB) with abundant Co-N-C active sites on the Ketjen Black (KB), through a ligand-mediated-synthesis and a low-temperature-pyrolysis strategy. The uniformly distributed Co-N-C active sites were proved to be favorable for the conversion of polysulfide at the cathode, hence improving the capacity and cyclic life of Li-S battery. As a result, the Co-N-C@KB cathode for the Li-S battery could deliver an initial discharge specific capacity as high as 1 442 mAh·g-1, and have the excellent capability for capacity retention during the long-term stability test. |
| |
| Keywords: | Li-S battery atomically dispersed catalyst carbon materials sulfur host adsorption |
|
| 点击此处可从《无机化学学报》浏览原始摘要信息 |
| 点击此处可从《无机化学学报》下载免费的PDF全文 |
|
