Rechargeable hybrid aqueous batteries using silica nanoparticle doped aqueous electrolytes

Changyu Lu, Tuan K.A. Hoang, The Nam Long Doan, Hongbin Zhao, Ran Pan, Li Yang, Weisheng Guan and P. Chen

Applied Energy, 2016, vol. 170, issue C, 58-64

Abstract: Silica nanoparticles doped aqueous electrolytes have been prepared and implemented for the first time in rechargeable hybrid aqueous battery systems (ReHABs). The batteries were assembled from a cathode containing LiMn2O4 – a lithium intercalation compound, a zinc metal foil anode and a sulfate electrolyte containing Zn2+ and Li+ ions. Silica nanoparticles were doped into the liquid electrolyte with the initial aim to create a silica containing gel electrolyte. However, the 5% and 10% SiO2 doped electrolytes were viscous and could be easily absorbed in the Absorbed Glass Mat (AGM) separator and the whole system (doped electrolyte+AGM) immobilized after a few minutes. The AGM loaded with silica doped electrolytes remained wet after storage for weeks under ambient condition thanks to the water retention ability of nanoscale silica particles. The doped silica nanoparticles restrained deposition of zinc dendritic crystals, and reduced float charge current and self-discharge. The ReHABs assembled from the silica nanoparticles doped electrolytes provided high specific discharge capacity, up to 140mAh (gLiMn2O4)−1 at 0.2C, and the cyclability of such systems was significantly enhanced compared to the ReHABs assembled from conventional electrolytes. X-ray Diffraction revealed that the anode of the batteries using SiO2 doped electrolytes were protected since only the XRD peaks of Zn were detected after the batteries were running 700 cycles of charge and discharge.

Keywords: Rechargeable battery; Aqueous electrolyte; Silica; Zinc; Float charge current (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0306261916302732
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:170:y:2016:i:c:p:58-64

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/bibliographic
http://www.elsevier. ... 405891/bibliographic

DOI: 10.1016/j.apenergy.2016.02.117

Access Statistics for this article

Applied Energy is currently edited by J. Yan

More articles in Applied Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().