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Research Article

Dendrite-free all-solid-state lithium batteries with lithium phosphorous oxynitride-modified lithium metal anode and composite solid electrolytes

Chunhua Wang1,2,3, Guoliang Bai2( ), Yifu Yang1( ), Xingjiang Liu3( ), Huixia Shao1
Hubei Key Lab. of Electrochemical Power Sources,College of Chemistry and Molecular Sciences, Wuhan University,Wuhan,430072,China;
Anhui Province Key Laboratory of Optoelectronic and Magnetism Functional Materials,Key Laboratory of Functional Coordination Compounds of Anhui Higher Education Institutes, Anqing Normal University,Anqing,246011,China;
National Key Lab. of Power Sources,Tianjin Institute of Power Sources,Tianjin,300381,China;
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Abstract

Dendrite formation on lithium (Li) metal anode is a key issue which hinders the development of rechargeable Li battery seriously. A novel method for suppressing Li dendrites via using Li phosphorous oxynitride (LiPON) modified Li anode and Li1.5Al0.5Ge1.5(PO4)3-poly(ethylene oxide)(Li bistrifluoromethane-sulfonimide) (LAGP-PEO(LiTFSI)) composite solid electrolyte in all-solid-state Li battery is proposed, and the effect of the thickness of LiPON on Li anode performance is also studied. LiPON film with a thickness of 500 nm exhibits satisfactory interface property between Li metal anode and the LAGP-PEO(LiTFSI) solid electrolyte. The LiPON film provides a uniform Li+ flux across the interface and effectively inhibits the formation of Li dendrites in all-solid-state Li batteries. The assembled all-solid-state Li cell Li(LiPON)/LAGP- PEO(LiTFSI)/LiFePO4 delivers an initial discharge capacity of 152.4 mAh·g-1 and exhibits good cycling stability and rate performance at 50 ℃.

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Keywords

lithium metal anodelithium dendritesLi phosphorous oxynitride (LiPON)composite solid electrolyteall-solid-state lithium battery

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Nano Research
Volume 12 Issue 1,
January 2019
Pages 217-223
DOI: 10.1007/s12274-018-2205-7

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Cite this article:
Wang C, Bai G, Yang Y, et al. Dendrite-free all-solid-state lithium batteries with lithium phosphorous oxynitride-modified lithium metal anode and composite solid electrolytes. Nano Research, 2019, 12(1): 217-223. https://doi.org/10.1007/s12274-018-2205-7
Topics:
Aluminum compoundsAnodesGermanium compoundsLithium batteriesLithium compoundsMetalsNitridesPotentiometric sensorsState Batteries

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Received: 26 June 2018
Revised: 23 August 2018
Accepted: 13 September 2018
Published: 22 September 2018
© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018