中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 合肥物质科学研究院
  3. 中国科学院合肥物质科学研究院
  4. 中科院安徽光学精密机械研究所
A novel sulfur@void@hydrogel yolk-shell particle with a high sulfur content for volume-accommodable and polysulfide-adsorptive lithium-sulfur battery cathodes

文献类型：期刊论文

作者Zhang, Min5; Zhu, Mengfei5; Zhong, Yan5; Han, Tianli5; Sun, Bai4; Zhu, Shuguang4; Gu, Cuiping5; Kong, Lingtao3; Zhang, Huigang1,2; Liu, Jinyun5
刊名NANOTECHNOLOGY
出版日期2020-11-06
卷号31
关键词nanocomposite secondary battery stability capacity immobilizing polysulfide
ISSN号0957-4484
DOI10.1088/1361-6528/abaa72
通讯作者Gu, Cuiping(cpgu2008@mail.ahnu.edu.cn)
英文摘要High-energy-density secondary batteries are required for many applications such as electric vehicles. Lithium-sulfur (Li-S) batteries are receiving broad attention because of their high theoretical energy density. However, the large volume change of sulfur during cycling, poor conductivity, and the shuttle effect of sulfides severely restrict the Li-storage performance of Li-S batteries. Herein, we present a novel core-shell nanocomposite consisting of a sulfur core and a hydrogel polypyrrole (PPy) shell, enabling an ultra-high sulfur content of about 98.4% within the composite, which greatly exceeds many other conventional composites obtained by coating sulfur onto some hosts. In addition, the void inside the core-shell structure effectively accommodates the volume change; the conductive PPy shell improves the conductivity of the composite; and PPy is able to adsorb polysulfides, suppressing the shuttle effect. After cycling for 200 cycles, the prepared S@void@PPy composite retains a stable capacity of 650 mAh g(-1), which is higher than the bare sulfur particles. The composite also exhibits a fast Li ion diffusion coefficient. Furthermore, the density functional theory calculations show the PPy shell is able to adsorb polysulfides efficiently, with a large adsorption energy and charge density transfer.
WOS关键词DOPED POROUS CARBON ; SOL-GEL ; PERFORMANCE ; POLYPYRROLE ; COMPOSITES ; GRAPHENE ; NETWORK ; NANOCOMPOSITE ; NITROGEN ; STORAGE
资助项目Key Research and Development Program of Wuhu[2019YF07] ; Science and Technology Major Project of Anhui Province[18030901093] ; Natural Science Research Project for Universities in Anhui Province[KJ2018ZD034] ; Natural Science Research Project for Universities in Anhui Province[KJ2019A0502] ; Key Research and Development Plan of Anhui Province[201904A07020070] ; Anhui Normal University[2020XJ48] ; Anhui Provincial Program for Innovation and Entrepreneurship of Returnees from Overseas[2019LCX005]
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
WOS记录号WOS:000562276200001
出版者IOP PUBLISHING LTD
资助机构Key Research and Development Program of Wuhu ; Science and Technology Major Project of Anhui Province ; Natural Science Research Project for Universities in Anhui Province ; Key Research and Development Plan of Anhui Province ; Anhui Normal University ; Anhui Provincial Program for Innovation and Entrepreneurship of Returnees from Overseas
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/42922]  
专题合肥物质科学研究院_中科院安徽光学精密机械研究所
通讯作者Gu, Cuiping
作者单位1.Nanjing Univ, Coll Engn & Appl Sci, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China
2.Nankai Univ, Minist Educ, Key Lab Adv Energy Mat Chem, Tianjin 300071, Peoples R China
3.Chinese Acad Sci, Inst Intelligent Machines, Hefei 230031, Anhui, Peoples R China
4.Anhui Jianzhu Univ, Coll Environm & Energy Engn, Hefei 230601, Anhui, Peoples R China
5.Anhui Normal Univ, Coll Chem & Mat Sci, Anhui Lab Mol Based Mat, Key Lab Funct Mol Solids,Minist Educ, Wuhu 241000, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Min,Zhu, Mengfei,Zhong, Yan,et al. A novel sulfur@void@hydrogel yolk-shell particle with a high sulfur content for volume-accommodable and polysulfide-adsorptive lithium-sulfur battery cathodes[J]. NANOTECHNOLOGY,2020,31.
APA Zhang, Min.,Zhu, Mengfei.,Zhong, Yan.,Han, Tianli.,Sun, Bai.,...&Liu, Jinyun.(2020).A novel sulfur@void@hydrogel yolk-shell particle with a high sulfur content for volume-accommodable and polysulfide-adsorptive lithium-sulfur battery cathodes.NANOTECHNOLOGY,31.
MLA Zhang, Min,et al."A novel sulfur@void@hydrogel yolk-shell particle with a high sulfur content for volume-accommodable and polysulfide-adsorptive lithium-sulfur battery cathodes".NANOTECHNOLOGY 31(2020).

入库方式： OAI收割

来源：合肥物质科学研究院

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。