电解质
阴极
阳极
材料科学
电压
高压
氧化物
环氧乙烷
聚合物
能量密度
化学工程
电极
纳米技术
复合数
储能
聚合物电解质
固态
快离子导体
锂(药物)
电池(电)
光电子学
工程物理
电气工程
复合材料
化学
离子电导率
工程类
热力学
功率(物理)
冶金
量子力学
物理
物理化学
共聚物
作者
Pedro López-Aranguren,Xabier Judez,Mohamed Chakir,Michel Armand,Lucienne Buannic
出处
期刊:Journal of The Electrochemical Society
[The Electrochemical Society]
日期:2020-01-31
卷期号:167 (2): 020548-020548
被引量:26
标识
DOI:10.1149/1945-7111/ab6dd7
摘要
Solid State Batteries (SSBs) are the best candidates to overcome the safety and energy density drawbacks of conventional Li-ion. However, this technology is still relatively nascent in development and needs to offer competitive energy density so as to meet current demands of devices, especially those related to emerging electric vehicles. This work focuses on cell characteristics having the potential to reach 250 Wh kg−1 and 500 Wh l−1 in a manufacturing environment. The electrode and the solid electrolyte were carefully selected based on the results of theoretical energy density calculations, also taking into account the the scalability of their processing. The reported cells rely on a cathode which includes the high voltage active material NMC622, with loadings up to 1.6 mAh cm−2, a composite electrolyte based on garnet-type oxide (Li7La3Zr2O12) and poly(ethylene oxide) (PEO), and a Li metal anode. As a consequence of a particular conditioning, when cycled at 70 °C the cells delivered 91% of their theoretical capacity. To our knowledge, this is the first time that a PEO-based electrolyte has been successfully cycled with a high-voltage cathode. Pouch cells of 30 mAh have also been tested at 55 °C. These promising results highlight the feasibility of the industrial development of competitive SSBs.
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