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A graphene/PVDF/PP multilayer composite separator for long-life and high power lithium-ion batteries
Bu, Ai-Xiu; Tan, Yong; Fang, Ruo-Pian; Li, Feng; Pei, Song-Feng; Ren, Wen-Cai; Pei, SF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110010, Peoples R China.; Tan, Y (reprint author), Shenyang Ligong Univ, Shenyang 110159, Peoples R China.
2017-02-01
Source PublicationNEW CARBON MATERIALS
ISSN1007-8827
Volume32Issue:1Pages:63-70
AbstractThe separator is an important part of lithium-ion batteries and its optimization from both material and structural considerations can improve the performance of the battery. We prepared multilayer separators by coating a slurry containing graphene and PVDF in N-methylpyrrolidone on one side of a commercial polypropylene (PP) separator, followed by water treatment at 60 degrees C for 6 h and vacuum drying at 60 degrees C for 12 h to manipulate the pore structure of the composite layer. Results indicate that the discharge capacities of batteries using PP and the composite separator were nearly the same at a low rate of 0.5 C. However, the capacity of the former at a high rate of 5 C fades quickly while that of the latter remains almost unchanged after 600 cycles. The composite separators have a high absorption and wettability of the electrolyte, resulting in an improved conductivity.; The separator is an important part of lithium-ion batteries and its optimization from both material and structural considerations can improve the performance of the battery. We prepared multilayer separators by coating a slurry containing graphene and PVDF in N-methylpyrrolidone on one side of a commercial polypropylene (PP) separator, followed by water treatment at 60 degrees C for 6 h and vacuum drying at 60 degrees C for 12 h to manipulate the pore structure of the composite layer. Results indicate that the discharge capacities of batteries using PP and the composite separator were nearly the same at a low rate of 0.5 C. However, the capacity of the former at a high rate of 5 C fades quickly while that of the latter remains almost unchanged after 600 cycles. The composite separators have a high absorption and wettability of the electrolyte, resulting in an improved conductivity.
description.department[bu, ai-xiu ; fang, ruo-pian ; li, feng ; pei, song-feng ; ren, wen-cai] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110010, peoples r china ; [bu, ai-xiu ; tan, yong] shenyang ligong univ, shenyang 110159, peoples r china
KeywordLithium-ion Battery Composite Separator Graphene/pvdf Coating Pore Structure Manipulation Ionic Conductivity
Subject AreaMaterials Science, Multidisciplinary
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78315
Collection中国科学院金属研究所
Corresponding AuthorPei, SF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110010, Peoples R China.; Tan, Y (reprint author), Shenyang Ligong Univ, Shenyang 110159, Peoples R China.
Recommended Citation
GB/T 7714
Bu, Ai-Xiu,Tan, Yong,Fang, Ruo-Pian,et al. A graphene/PVDF/PP multilayer composite separator for long-life and high power lithium-ion batteries[J]. NEW CARBON MATERIALS,2017,32(1):63-70.
APA Bu, Ai-Xiu.,Tan, Yong.,Fang, Ruo-Pian.,Li, Feng.,Pei, Song-Feng.,...&Tan, Y .(2017).A graphene/PVDF/PP multilayer composite separator for long-life and high power lithium-ion batteries.NEW CARBON MATERIALS,32(1),63-70.
MLA Bu, Ai-Xiu,et al."A graphene/PVDF/PP multilayer composite separator for long-life and high power lithium-ion batteries".NEW CARBON MATERIALS 32.1(2017):63-70.
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