Thick electrode with thickness-independent capacity enabled by assembled two-dimensional porous nanosheets
Wu, Tianqi1; Zhao, Zedong1; Zhang, Jiajia1; Zhang, Chang2; Guo, Yixuan1; Cao, Yongjie3,4; Pan, Shaoxue1; Liu, Yicheng1; Liu, Peiying1; Ge, Yuanhang1; Liu, Wei2; Dong, Lei2; Lu, Hongbin1
2021-04
Source PublicationENERGY STORAGE MATERIALS
ISSN2405-8297
Volume36Pages:265-271
Status已发表
DOI10.1016/j.ensm.2020.12.034
Abstract

Thick electrode is essential for new-generation, high energy density batteries due to its low active/inactive-component ratio. However, current strategies using external forces for improving ion-transport in electrodes often cause low volumetric density, poor mechanical property or less mass loading. Here, high-performance thick electrodes were fabricated through layer-by-layer assembly of two-dimensional (2D), porous nanosheets. The 2D morphology and in-plane pores enable dense electrode structure but with abundant, penetrated ion-transport channels. Various cathode species (NCMs, LCO and LNMC nanosheets) were synthesized by a simple one-pot process. Typically, the mechanically robust NS-NCM electrode reveals rate and cycling performance far better than the commercial NCM counterparts. In particular, the NS-NCM electrode exhibits thickness-independent capacity and excellent volumetric capacity even when the mass loading is scaled up to 320 mg cm(-2). This enables it to deliver a superb areal capacity of 45.4 mAh cm(-2), surpassing all the reported cathode species and one order of magnitude higher than commercial cathodes. This strategy provides a significant stride in structural design of electrode toward higher areal and volumetric energy density.

KeywordThick-electrode Thickness-independent capacity 2D porous nanosheets Layered structure Ion transport
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000620382900011
PublisherELSEVIER
Original Document TypeArticle
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttps://kms.shanghaitech.edu.cn/handle/2MSLDSTB/125716
Collection物质科学与技术学院_硕士生
物质科学与技术学院_PI研究组_刘巍组
物质科学与技术学院_博士生
Corresponding AuthorDong, Lei; Lu, Hongbin
Affiliation1.Fudan Univ, Collaborat Innovat Ctr Polymers & Polymer Composi, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China;
2.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China;
3.Fudan Univ, Inst New Energy, Dept Chem, Shanghai 200433, Peoples R China;
4.Fudan Univ, Inst New Energy, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China
Corresponding Author AffilicationSchool of Physical Science and Technology
Recommended Citation
GB/T 7714
Wu, Tianqi,Zhao, Zedong,Zhang, Jiajia,et al. Thick electrode with thickness-independent capacity enabled by assembled two-dimensional porous nanosheets[J]. ENERGY STORAGE MATERIALS,2021,36:265-271.
APA Wu, Tianqi.,Zhao, Zedong.,Zhang, Jiajia.,Zhang, Chang.,Guo, Yixuan.,...&Lu, Hongbin.(2021).Thick electrode with thickness-independent capacity enabled by assembled two-dimensional porous nanosheets.ENERGY STORAGE MATERIALS,36,265-271.
MLA Wu, Tianqi,et al."Thick electrode with thickness-independent capacity enabled by assembled two-dimensional porous nanosheets".ENERGY STORAGE MATERIALS 36(2021):265-271.
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