Spatial Effects between Two 3D Self-Supported Carbon-Nanotube-Based Skeleton as Binder-Free Cathodes for Lithium-Sulfur Batteries
文献类型：期刊论文
| 作者 | Guo, Lianzhen; Li, Xinyan; Xu, Zhuijun; Zhou, Shenglin; Zhang, Xiaohua; Ni, Jiangfeng; Cheng, Yajun; Yang, Zhaohui |
| 刊名 | CHEMISTRYSELECT
 |
| 出版日期 | 2020 |
| 卷号 | 5期号:36页码:11383-11390 |
| 关键词 | ENERGY-STORAGE HYBRID LIFE NANOPARTICLES ELECTRODE VOLTAGE SPONGE |
| DOI | 10.1002/slct.202002090 |
| 英文摘要 | In this manuscript a deep comparison of the spatial effect is conducted between vertically-aligned carbon nanotube array (CNTA) and 3D inter-connected carbon nanotube sponge (CNTS) based self-supported and adhesive free cathode material for lithium-sulfur battery. Melt impregnation (M-CNTA/S and M-CNTS/S) and solution penetration (S-CNTA/S and S-CNTS/S) methods are separately carried out to introduce sulfur into two carbon nanotube-based matrix. Besides, random distributed carbon nanotube powders (RCNT)-based cathode made through a slurry coating process is also prepared for comparison. As a result, the aligned CNTA skeleton has the most efficient transfer paths and regular nanometer-sized gaps, which greatly benefit the directional transmission of electrons, better rate performance, smaller cell resistance and long cyclic stability. Especially, the cell made by M-CNTA/S delivers an outstanding high-rate performance of 3 C -859.3 mAh g(-1), 5 C -833.1 mAh g(-1)and 10 C -702.8 mAh g(-1), with a capacity retention of 77 % and coulombic effciency (similar to 100 %) after 200 cycles at a rate of 3 C. Meanwhile, the interconnected CNTS has a larger pore diameter and 3D conductive network, which benefits higher sulfur loading and electrochemical activity of sulfur. In particular, the M-CNTS/S with a sulfur content up to 60 wt %, achieves an impressive multiplier performance of 0.5 C 1285 mAh g(-1), 1 C 1030 mAh g(-1)and 3 C 900 mAh g(-1). The retention of the capacity reaches around 88 % after 100 charge-discharge cycles at 3 C. The current observation reveals the crucial effects from the spatial structure and sulfur impregnation method on the performance of carbon nanotube/sulfur (C/S)-based cathodes for lithium-sulfur batteries, which serves as important guidance for the development of high-performance cathode materials. |
| 学科主题 | Chemistry |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/20471]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 作者单位 | 1.Yang, ZH (corresponding author), Soochow Univ, Sch Phys Sci & Technol, Suzhou 215006, Peoples R China. 2.Yang, ZH (corresponding author), Soochow Univ, Ctr Soft Condensed Matter Phys & Interdisciplinar, Suzhou 215006, Peoples R China. 3.Yang, ZH (corresponding author), Soochow Univ, Jiangsu Key Lab Thin Films, Suzhou 215006, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Guo, Lianzhen,Li, Xinyan,Xu, Zhuijun,et al. Spatial Effects between Two 3D Self-Supported Carbon-Nanotube-Based Skeleton as Binder-Free Cathodes for Lithium-Sulfur Batteries[J]. CHEMISTRYSELECT,2020,5(36):11383-11390. |
| APA | Guo, Lianzhen.,Li, Xinyan.,Xu, Zhuijun.,Zhou, Shenglin.,Zhang, Xiaohua.,...&Yang, Zhaohui.(2020).Spatial Effects between Two 3D Self-Supported Carbon-Nanotube-Based Skeleton as Binder-Free Cathodes for Lithium-Sulfur Batteries.CHEMISTRYSELECT,5(36),11383-11390. |
| MLA | Guo, Lianzhen,et al."Spatial Effects between Two 3D Self-Supported Carbon-Nanotube-Based Skeleton as Binder-Free Cathodes for Lithium-Sulfur Batteries".CHEMISTRYSELECT 5.36(2020):11383-11390. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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