Transport of ions in a mixed Na + /K + ion conducting glass - electrodiffusion profiles and electrochemical interphase formation
Electrochimica Acta, ISSN: 0013-4686, Vol: 191, Page: 616-623
2016
- 21Citations
- 14Captures
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Article Description
The competition of Na + ion versus K + ion transport in a mixed alkali borosilicate glass has been investigated by low energy bombardment induced ion transport employing Cs + ions as the foreign ion. Electrodiffusion causes the replacement of Na + and K + down to about 200 nm below the surface of the glass. Beyond this electrodiffusion front (in the direction of ion transport) K + ions accumulate to a density above the bulk concentration while Na + is further depleted towards the backside electrode. At the backside electrode only Na is electrodeposited since the electrical potential does not allow for K electrodeposition. A full simulation of the electrodiffusion profiles reveals the complete concentration dependence of the diffusion coefficients of the Na + and K + ions.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0013468616300615; http://dx.doi.org/10.1016/j.electacta.2016.01.061; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84955265096&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0013468616300615; https://dx.doi.org/10.1016/j.electacta.2016.01.061
Elsevier BV
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