Hydrogel and sulfur co-coating on semispherical TiO2 as polysulfides-immobilized cathodes for high capacity and stable rate performance lithium-sulfur batteries
文献类型：期刊论文
| 作者 | Cheng, Mengying1; Han, Tianli1; Zhang, Min1 ; Zhang, Haikuo2; Sun, Bai3; Zhu, Shuguang3; Zhai, Muheng1; Wu, Yaohua4; Liu, Jinyun1
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| 刊名 | APPLIED SURFACE SCIENCE
 |
| 出版日期 | 2020-05-30 |
| 卷号 | 513 |
| 关键词 | Energy-storage Layer-by-layer coating Sulfur cathode Hydrogel Capacity |
| ISSN号 | 0169-4332 |
| DOI | 10.1016/j.apsusc.2020.145887 |
| 通讯作者 | Liu, Jinyun(jyliu@iim.ac.cn) |
| 英文摘要 | Li-S batteries are promising new energy-storage systems owing to their high theoretical energy density. However, the volume-change and poor conductivity of S, and shuttle effect severely restrict applications. Here, we present a novel semispherical composite consisting of sulfur and polyaniline (PANI) hydrogel coating on a bowl-shaped hollow TiO2. The TiO2@PANI@S composites show an excellent performance with a high capacity of 1058 mAh g(-1) after 200 cycles at 0.2 C, and a stable Columbic efficiency of 99.8%. The composites also possess a recoverable rate-performance under repeated tests. The Li+ ion diffusion co-efficiency is studied, which indicates that the semispherical composite enables a rapid Li+ ion transportation. In addition, the density functional theory calculations confirm a strong adsorption of TiO2 towards polysulfides including for Li2S4, Li2S6, and Li2S8, which efficiently suppress the shuttle effect. |
| WOS关键词 | ELECTROCHEMICAL PERFORMANCE ; CARBON ; COMPOSITES ; ENHANCEMENT ; MECHANISMS ; DFT |
| 资助项目 | Science and Technology Major Project of Anhui Province[18030901093] ; Key Research and Development Program of Wuhu[2019YF07] ; Natural Science Research Project for Universities in Anhui Province[KJ2018ZD034] ; Natural Science Research Project for Universities in Anhui Province[KJ2019A0502] ; Natural Science Research Project for Universities in Anhui Province[KJ2017ZD40] ; Foundation of Anhui Laboratory of Molecule-Based Materials[FZJ19014] ; National Natural Science Foundation of China[61873003] ; National Key Research and Development Project of China[SQ2019YFC040023] ; Anhui Provincial Program for Innovation and Entrepreneurship of Returnees from Overseas[2019LCX005] |
| WOS研究方向 | Chemistry ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000523184600054 |
| 出版者 | ELSEVIER |
| 资助机构 | Science and Technology Major Project of Anhui Province ; Key Research and Development Program of Wuhu ; Natural Science Research Project for Universities in Anhui Province ; Foundation of Anhui Laboratory of Molecule-Based Materials ; National Natural Science Foundation of China ; National Key Research and Development Project of China ; Anhui Provincial Program for Innovation and Entrepreneurship of Returnees from Overseas |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/103629]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Liu, Jinyun |
| 作者单位 | 1.Anhui Normal Univ, Coll Chem & Mat Sci, Anhui Higher Educ Inst,Key Lab Electrochem Clean, Key Lab Funct Mol Solids,Minist Educ,Anhui Lab Mo, Wuhu 241000, Anhui, Peoples R China 2.Shanghai Jiao Tong Univ, Ctr High Performance Comp, Dept Micro Nano Elect, Key Lab Thin Film & Micro Fabricat,Minist Educ, Shanghai 200240, Peoples R China 3.Anhui Jianzhu Univ, Coll Environm & Energy Engn, Hefei 230601, Anhui, Peoples R China 4.Chinese Acad Sci, Inst Intelligent Machines, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Mengying,Han, Tianli,Zhang, Min,et al. Hydrogel and sulfur co-coating on semispherical TiO2 as polysulfides-immobilized cathodes for high capacity and stable rate performance lithium-sulfur batteries[J]. APPLIED SURFACE SCIENCE,2020,513. |
| APA | Cheng, Mengying.,Han, Tianli.,Zhang, Min.,Zhang, Haikuo.,Sun, Bai.,...&Liu, Jinyun.(2020).Hydrogel and sulfur co-coating on semispherical TiO2 as polysulfides-immobilized cathodes for high capacity and stable rate performance lithium-sulfur batteries.APPLIED SURFACE SCIENCE,513. |
| MLA | Cheng, Mengying,et al."Hydrogel and sulfur co-coating on semispherical TiO2 as polysulfides-immobilized cathodes for high capacity and stable rate performance lithium-sulfur batteries".APPLIED SURFACE SCIENCE 513(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
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