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DOI | 10.1038/s41467-019-10442-3 |
Coupling of electrochemically triggered thermal and mechanical effects to aggravate failure in a layered cathode | |
Yan, Pengfei1,2; Zheng, Jianming3; Chen, Tianwu4; Luo, Langli1; Jiang, Yuyuan2; Wang, Kuan2; Sui, Manling2; Zhang, Ji-Guang3; Zhang, Sulin4; Wang, Chongmin1 | |
2019-06-25 | |
发表期刊 | NATURE COMMUNICATIONS |
ISSN | 2041-1723 |
出版年 | 2018 |
卷号 | 9 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China |
英文摘要 | Electrochemically driven functioning of a battery inevitably induces thermal and mechanical effects, which in turn couple with the electrochemical effect and collectively govern the performance of the battery. However, such a coupling effect, whether favorable or detrimental, has never been explicitly elucidated. Here we use in situ transmission electron microscopy to demonstrate such a coupling effect. We discover that thermally perturbating delithiated LiNi0.6Mn0.2Co0.2O2 will trigger explosive nucleation and propagation of intragranular cracks in the lattice, providing us a unique opportunity to directly visualize the cracking mechanism and dynamics. We reveal that thermal stress associated with electrochemically induced phase inhomogeneity and internal pressure resulting from oxygen release are the primary driving forces for intragranular cracking that resembles a "popcorn" fracture mechanism. The present work reveals that, for battery performance, the intricate coupling of electrochemical, thermal, and mechanical effects will surpass the superposition of individual effects. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000436049300004 |
WOS关键词 | LITHIUM-ION BATTERIES ; RECHARGEABLE BATTERIES ; ELECTRODE MATERIALS ; STRUCTURAL-CHANGES ; HIGH-CAPACITY ; NI ; DEGRADATION ; DIFFRACTION ; INSTABILITY ; MIGRATION |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204426 |
专题 | 资源环境科学 |
作者单位 | 1.Pacific Northwest Natl Lab, Environm Mol Sci Lab, 902 Battelle Blvd, Richland, WA 99352 USA; 2.Beijing Univ Technol, Inst Microstruct & Properties Adv Mat, 100 Pingleyuan, Beijing 100124, Peoples R China; 3.Pacific Northwest Natl Lab, Energy & Environm Directorate, 902 Battelle Blvd, Richland, WA 99352 USA; 4.Penn State Univ, Dept Engn Sci & Mech, University Pk, PA 16802 USA |
推荐引用方式 GB/T 7714 | Yan, Pengfei,Zheng, Jianming,Chen, Tianwu,et al. Coupling of electrochemically triggered thermal and mechanical effects to aggravate failure in a layered cathode[J]. NATURE COMMUNICATIONS,2019,9. |
APA | Yan, Pengfei.,Zheng, Jianming.,Chen, Tianwu.,Luo, Langli.,Jiang, Yuyuan.,...&Wang, Chongmin.(2019).Coupling of electrochemically triggered thermal and mechanical effects to aggravate failure in a layered cathode.NATURE COMMUNICATIONS,9. |
MLA | Yan, Pengfei,et al."Coupling of electrochemically triggered thermal and mechanical effects to aggravate failure in a layered cathode".NATURE COMMUNICATIONS 9(2019). |
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