Please use this identifier to cite or link to this item:
|Title:||The role of ions and reaction sites for electrochemical reversible charge cycling in mesoporous nickel hydroxides|
|Citation:||Liu, J., Ren, Y., Dasgupta, B., Tanoto, H., Seng, H.L., Chim, W.K., Li, S.F.Y., Chiam, S.Y. (2013-12-21). The role of ions and reaction sites for electrochemical reversible charge cycling in mesoporous nickel hydroxides. Journal of Materials Chemistry A 1 (47) : 15095-15101. ScholarBank@NUS Repository. https://doi.org/10.1039/c3ta13938g|
|Abstract:||Layered nickel hydroxide thin films with mesoporous structure were prepared on ITO substrates by a facile chemical bath deposition method. The electrochemical properties of the nickel hydroxide/oxyhydroxide films were investigated in both potassium hydroxide and lithium perchlorate in propylene carbonate electrolytes. We show that the high reversible charge cycling capability of the material is enabled by the redox reaction involving hydroxyl ions, especially in the oxidative cycle. Li ion reversible charge cycling requires available reaction or adsorption sites that can be provided by sub-stoichiometry or defective films. Raising the defect concentration, the cyclic reversibility is shown to increase by ∼5 times. The effects of intercalated water in the interlayers are also discussed. We show that the presence of water in the interlayers can lead to a passivating reaction during the charge cycling and also cause optical efficiency losses through unwanted charge trapping. © 2013 The Royal Society of Chemistry.|
|Source Title:||Journal of Materials Chemistry A|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jul 21, 2018
WEB OF SCIENCETM
checked on Jun 11, 2018
checked on Jun 1, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.