期刊
INORGANICS
卷 10, 期 5, 页码 -出版社
MDPI
DOI: 10.3390/inorganics10050060
关键词
solid-state battery; hybrid battery; interfaces; polymer electrolyte; solid electrolyte; solid-polymer electrolyte interphase
资金
- Faraday Institution All-Solid-State Batteries with Li and Na Anodes [FIRG007, FIRG008]
- Engineering and Physical Sciences Research Council [EP/M009521/1]
- Henry Royce Institute for Advanced Materials [EP/R00661X/1, EP/S019367/1, EP/R010145/1]
- EPSRC [EP/R024006/1, EP/P003532/1]
- EPSRC ICSF Genesis: garnet electrolytes for new energy storage integrated solutions [EP/R024006/1]
- Horizon 2020 FETPROACT-2018-2020 HARVESTORE
The research found that the ceramic/polymer electrolyte interface in a bilayer structure of hybrid solid-state batteries can have low resistance, while the ceramic/polymer electrolyte interface may have high resistance. The formation of chemical interphase may affect the transport resistance between electrolytes.
Hybrid solid-state batteries using a bilayer of ceramic and solid polymer electrolytes may offer advantages over using a single type of solid electrolyte alone. However, the impedance to Li+ transport across interfaces between different electrolytes can be high. It is important to determine the resistance to Li+ transport across these heteroionic interfaces, as well as to understand the underlying causes of these resistances; in particular, whether chemical interphase formation contributes to giving high resistances, as in the case of ceramic/liquid electrolyte interfaces. In this work, two ceramic electrolytes, Li3PS4 (LPS) and Li6.5La3Zr1.5Ta0.5O12 (LLZTO), were interfaced with the solid polymer electrolyte PEO10:LiTFSI and the interfacial resistances were determined by impedance spectroscopy. The LLZTO/polymer interfacial resistance was found to be prohibitively high but, in contrast, a low resistance was observed at the LPS/polymer interface that became negligible at a moderately elevated temperature of 50 degrees C. Chemical characterization of the two interfaces was carried out, using depth-profiled X-ray photoelectron spectroscopy and time-of-flight secondary ion mass spectrometry, to determine whether the interfacial resistance was correlated with the formation of an interphase. Interestingly, no interphase was observed at the higher resistance LLZTO/polymer interface, whereas LPS was observed to react with the polymer electrolyte to form an interphase.
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