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Materials Technology
Advanced Performance Materials
Volume 35, 2020 - Issue 9-10: Future materials for energy conversion and storage
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Research Paper

Scalable Li1.5Al0.5Ge1.5(PO4)3 thin membrane prepared by tape-casting for large-scale lithium–air battery application

Yaqi Zhua Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
,
Gongxuan Chenb College of Chemistry and Life Science, Institute of Materials Research and Engineering, Hubei University of Education, Wuhan, P.R. China
,
Jianguo Suna Department of Mechanical Engineering, National University of Singapore, Singapore, SingaporeORCID Iconhttps://orcid.org/0000-0002-2222-2478
ORCID Icon,
Jiakai Wangc School of Materials Science and Engineering, Hubei University, Wuhan, P.R. China
,
Tian Wub College of Chemistry and Life Science, Institute of Materials Research and Engineering, Hubei University of Education, Wuhan, P.R. China
,
Wei Daib College of Chemistry and Life Science, Institute of Materials Research and Engineering, Hubei University of Education, Wuhan, P.R. China
&
Li Lua Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore;d National University of Singapore Suzhou Research Institute, Suzhou, P. R. ChinaCorrespondence[email protected]
 show all
Pages 572-579 | Received 10 Oct 2019, Accepted 30 Dec 2019, Published online: 12 Jan 2020
 
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ABSTRACT

Thin NASICON-type Li1.5Al0.5Ge1.5(PO4)3 solid electrolyte membrane is successfully fabricated through tape-casting. A high density of 3.28 g cm−3 of the membrane with a porosity of 4.5% has been achieved when it is sintered at 900°C for 11 h. The membrane shows a comparative ionic conductivity with that of the glass-ceramic pellets. The total ionic conductivity of the present membrane is 2.62 × 10–4 S cm−1 at room temperature, and it maintains a stable conductivity of 1.3 × 10–4 S cm−1 in a 0.5 M LiOH and 0.5 M Li3PO4 buffer solution, which can fully afford the requirements of the membrane used in lithium–air batteries.

Graphical Abstract

High-density thin LAGP membrane with comparative ionic conductivity has been successfully prepared by tape-casting, which can fully afford the essential requirements of using in Li–air battery.

Disclosure statement

No potential conflict of interest was reported by the authors.

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