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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 | |
2021-04 | |
发表期刊 | ENERGY STORAGE MATERIALS |
ISSN | 2405-8297 |
卷号 | 36页码:265-271 |
发表状态 | 已发表 |
DOI | 10.1016/j.ensm.2020.12.034 |
摘要 | 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. |
关键词 | Thick-electrode Thickness-independent capacity 2D porous nanosheets Layered structure Ion transport |
收录类别 | SCI ; EI ; SCIE |
语种 | 英语 |
WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
WOS类目 | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
WOS记录号 | WOS:000620382900011 |
出版者 | ELSEVIER |
原始文献类型 | Article |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/125716 |
专题 | 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 |
通讯作者 | Dong, Lei; Lu, Hongbin |
作者单位 | 1.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 |
通讯作者单位 | 物质科学与技术学院 |
推荐引用方式 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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