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影响因子：30.5

DOI码：10.1039/d1ee01494c

发表刊物：Energy & Environmental Science

摘要：Solid-state batteries (SSBs) could significantly improve the safety and energy density over conventional liquid cells. One key enabling technology is the use of solid electrolytes. NASICON-type Li1.3Al0.3Ti1.7(PO4)3 (LATP) is a very attractive solid-state electrolyte for the cathode side due to its high oxidation potential and high ionic conductivity. The usage, however, is limited by its large interfacial resistance against most of the cathode materials as well as the thermodynamic instability during high temperature sintering needed to achieve high mass density. Here we construct thin, percolative, and mixed conductive interphases through in situ low-melting-point liquid sintering. These mixed conductive interphases drastically improve the kinetics, leading to high-loading solid LATP/LiCoO2 cathodes achieving capacity loading of up to ∼6 mA h cm−2. The technique is also applicable to Ni-rich cathode materials, achieving up to ∼10 mAh cm−2, which can lead to more than 400 W h kg−1 cells in SSBs. Our composite cathodes show a ten-times and three-times area capacity improvement over the state-of-the-art cathodes using oxide and sulfide SSEs, respectively.

合写作者：Shanyu Wang, Yaobin Xu, Guiming Zhong, Yang Zhou, Bo Liu, Xiaoyu Jiang, Xiang Wang, Yun Li, Ziqi Zhang, Songyan Chen, Chongmin Wang, Yong Yang, Wenqing Zhang, Junlan Wang, Jun Liu, Jihui Yang

第一作者：Xiang Han

通讯作者：Jun Liu,Jihui Yang

学科门类：工学

文献类型：J

卷号：14

期号：9

页面范围：5044-5056

是否译文：否

发表时间：2021-09-01

收录刊物：SCI

发布期刊链接：https://pubs.rsc.org/ee/article-abstract/14/9/5044/726875/All-solid-thick-oxide-cathodes-based-on-low