Interfacial integration and roll forming of quasi-solid-state Li-O-2 battery through solidification and gelation of ionic liquid

doi:10.1016/j.jpowsour.2020.228179

SIC OpenIR

	Interfacial integration and roll forming of quasi-solid-state Li-O-2 battery through solidification and gelation of ionic liquid
	Gao, KN; Wang, HR; He, MH; Li, YQ; Cui, ZH; Mao, Y; Zhang, T
	2020-07-01
Source Publication	JOURNAL OF POWER SOURCES
ISSN	0378-7753
Subtype	Article
Abstract	The development of solid-state lithium-oxygen batteries is currently limited primarily by the high solid-solid interfacial resistance and the lack of efficient assembly of electrolyte and electrode. In this work, noncovalent interactions between the cations of an ammonium ionic liquid and both solid electrolytes and carbon air cathodes are introduced. The ionic liquid-based electrolytes (ILE) are solidified on Li6.40La3Zr1.40Ta0.60O12 (LLZTO) nanoparticles and gelated by multi-wall carbon nanotubes (MWCNTs), respectively, to construct LLZTO@ILE quasi-solid-state electrolyte (QSSE) and MWCNTs-LLZTO/ILE gel cathode (GC). The QSSE exhibits a high ionic conductivity of 1.71 x 10(-3) S cm(-1) at 60 degrees C, high Li-ion transference number of 0.56, broad electrochemical window of similar to 4.8 V and good thermal stability. The GC shows outstanding compatibility with QSSE. Quasi-solid-state Li-O-2 batteries are assembled by integrating QSSE and GC films with a facile roll forming method, showing a low total interfacial resistance (similar to 87 Omega cm(2)), and excellent reversible cycles (70 cycles) with low charge overpotential (<0.44 V) and quite high electrical energy efficiency (>70%) at 60 degrees C and 200 mA g(-1). A 0.12 Ah pouch-type Li-O-2 battery was achieved by this method. These results suggest that the noncovalent interactions initiated by IL cations could be an effective approach to solve the solid-solid interface issue and achieve high discharge capacity in solid-state energy storage devices.
DOI	10.1016/j.jpowsour.2020.228179
WOS Keyword	LI-AIR BATTERIES ; LITHIUM-OXYGEN BATTERY ; ELECTROLYTE ; PERFORMANCE ; CONDUCTION ; STABILITY ; NANOPARTICLES ; MECHANISM ; FILMS ; LI2O2
Language	英语
WOS Research Area	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
Publisher	ELSEVIER
Citation statistics
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/27941
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Gao, KN,Wang, HR,He, MH,et al. Interfacial integration and roll forming of quasi-solid-state Li-O-2 battery through solidification and gelation of ionic liquid[J]. JOURNAL OF POWER SOURCES,2020.
APA	Gao, KN.,Wang, HR.,He, MH.,Li, YQ.,Cui, ZH.,...&Zhang, T.(2020).Interfacial integration and roll forming of quasi-solid-state Li-O-2 battery through solidification and gelation of ionic liquid.JOURNAL OF POWER SOURCES.
MLA	Gao, KN,et al."Interfacial integration and roll forming of quasi-solid-state Li-O-2 battery through solidification and gelation of ionic liquid".JOURNAL OF POWER SOURCES (2020).

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