期刊
NANO ENERGY
卷 90, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2021.106589
关键词
Sulfide solid electrolytes; 5V-class spinel cathode; LiNi0.5Mn1.5O4; All-solid-state batteries; Elemental manipulation; Interface engineering
类别
资金
- Key Program-Automobile Joint Fund of National Natural Science Foundation of China [U1964205]
- Key R&D Project - Department of Science and Technology of Jiangsu Province [BE2020003]
- General Program of National Natural Science Foundation of China [51972334]
- General Program of National Natural Science Foundation of Beijing [2202058]
- Cultivation project of leading innovative experts in Changz-hou City [CQ20210003]
- National Overseas High-level Expert recruit-ment Program [E1JF021E11]
- Talent Program of Chinese Academy of Sciences
- Scientist Studio Program Funding from Yangtze River Delta Physics Research Center
- Tianmu Lake Institute of Advanced Energy Storage Technologies [TIES-SS0001]
- Sci-ence and Technology Research Institute of China Three Gorges Corpo-ration [202103402]
This study introduces a new method of sulfurizing LNMO itself to improve the compatibility between the cathode and sulfide solid electrolyte, ultimately enhancing the performance of all-solid-state batteries with higher initial discharge capacity and better cycling stability.
Sulfide all-solid-state lithium-ion batteries represent one of the most promising energy storage technologies duo to higher safety and ionic conductivities. To further improve its energy density and application, high-voltage LiNi0.5Mn1.5O4 (LNMO) spinel cathode is highly desirable due to its high energy density, low cost, environmental friendliness and Co-free nature. However, sulfide solid electrolyte is not compatible with LNMO cathode, for which issue the reported solutions majorly focus on surface coating. In this work, we propose an efficient approach to sulfurize LNMO itself for an essentially new LNMOS cathode, which not only suppresses interfacial side-reactions but also improve ionic/electronic conductivity of the cathode. This method ultimately improves the interfacial compatibility and consequently the LNMOS/sulfide all-solid-state-battery performances, including 3 times higher initial discharge capacity and much better reversible cycling stability. Detailed analyses on the interface are performed for in-depth understanding and further development of high-energy-density sulfide all-solid-state batteries using 5V-class spinel cathodes.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据