%0 Journal Article
%A Quérel, Edouard
%A Seymour, Ieuan D
%A Cavallaro, Andrea
%A Ma, Qianli
%A Tietz, Frank
%A Aguadero, Ainara
%T The role of NaSICON surface chemistry in stabilizing fast-charging Na metal solid-state batteries
%J JPhys energy
%V 3
%N 4
%@ 2515-7655
%C Bristol
%I IOP Publishing
%M FZJ-2021-04213
%P 044007 -
%D 2021
%X Solid-state batteries (SSBs) with alkali metal anodes hold great promise as energetically dense andsafe alternatives to conventional Li-ion cells. Whilst, in principle, SSBs have the additionaladvantage of offering virtually unlimited plating current densities, fast charges have so far onlybeen achieved through sophisticated interface engineering strategies. With a combination ofsurface sensitive analysis, we reveal that such sophisticated engineering is not necessary inNaSICON solid electrolytes (Na3.4Zr2Si2.4P0.6O12) since optimised performances can be achievedby simple thermal treatments that allow the thermodynamic stabilization of a nanometric Na3PO4protective surface layer. The optimized surface chemistry leads to stabilized Na|NZSP interfaceswith exceptionally low interface resistances (down to 0.1 Ωcm2 at room temperature) and hightolerance to large plating current densities (up to 10 mA cm−2) even for extended cycling periodsof 30 min (corresponding to an areal capacity 5 mAh cm−2). The created Na|NZSP interfaces showgreat stability with increment of only up to 5 Ωcm2 after four months of cell assembly.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000717798200001
%R 10.1088/2515-7655/ac2fb3
%U https://juser.fz-juelich.de/record/902379