Journal Article

FZJ-2020-03009

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Dendrite-tolerant all-solid-state sodium batteries and an important mechanism of metal self-diffusion

Tsai, C.-L.FZJ* ; Lan, T.FZJ* ; Dellen, C.FZJ* ; Ling, Y. ; Ma, Q. (Corresponding author)FZJ* ; Fattakhova-Rohlfing, D.FZJ* ; Guillon, O.FZJ* ; Tietz, F.FZJ*

2020
Elsevier New York, NY [u.a.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/25590  doi:10.1016/j.jpowsour.2020.228666

Abstract: Inhibition of dendrite growth in all-solid-state lithium batteries (ASSLBs) has long been a challenge to the field.In the present study, the conditions for dendrite growth for a similar but less mature technology, all-solid-statesodium batteries (ASSNBs), are investigated. By simply sticking sodium metal to Na3.4Zr2(SiO4)2.4(PO4)0.6(NZSP) ceramic pellets and without applying external pressure during operation, the critical current density ofNa/NZSP/Na symmetric ASSNBs reaches 9 mA cm􀀀 2 at 25 ◦C. The cells can be stably operated at an areal capacityof 5 mAh cm􀀀 2 (per half cycle, with 1.0 mA cm􀀀 2) at 25 ◦C for 300 h in a galvanostatic cycling measurementwithout any dendrite formation. The results outperform the existing ASSLBs and ASSNBs, and also gobeyond satisfying the requirements for practical applications. The influence of the high metal self-diffusioncoefficient on the dendritic plating/stripping is regarded as the most likely reason for the high dendrite toleranceof ASSNBs. A mathematical model based on Fick’s second law was applied as a first approximation toillustrate this influence. Full ASSNBs were fabricated with infiltrated Na3V2(PO4)3 (NVP) as the cathode and canbe stably operated with a capacity of 0.60 mAh cm􀀀 2 at high rate of 0.5 mA cm􀀀 2 at room temperature.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)

Research Program(s):

1. 131 - Electrochemical Storage (POF3-131) (POF3-131)

Appears in the scientific report 2020

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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