Binder Effect on Electrochemical Performance of Zinc Electrodes For Nickel-Zinc Batteries
Abstract
Polyethylene glycol (PEG) and polyvinyl alcohol (PVA) were used as a zinc electrode binder at different concentrations to enhance the electrochemical behavior of zinc electrodes for nickel-zinc (NiZn) batteries. ZnO powders synthesized by mechanochemical and hydrothermal precipitation methods were mixed with lead oxide, calcium hydroxide and binder to prepare zinc electrodes in pouch cell NiZn batteries. Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD) analysis reveal that initial morphology of zinc electrode changes drastically regardless of the binder type and its loading after charge/discharge process, and even the charge/discharge process is not complete. The results show that the presence of PEG causes better discharge capacity compared to that of PVA as a binder. Zinc electrode prepared using commercial ZnO powder and 3 wt.% PEG gives the optimum discharge capability, with a specific capacity of approximately 311 mAhg-1, while zinc electrodes prepared using ZnO powder synthesized from ZnCl2 and Zn(NO3)2.6H2O and 6 wt.% PEG exhibit high specific energy of 255 and 275 mAhg-1, respectively. The results suggest a relationship between binder loading and battery capacity, but in-situ analysis of microstructural evolution of zinc electrode during charge/discharge process is needed to confirm this relationship.
Keywords
References
- 1. Huang H, Zhang L, Zhang WK, Gan YP, Shao H. Preparation and electrochemical properties of ZnO/conductive-ceramic nanocomposite as anode material for Ni/Zn rechargeable battery. J Power Sources. 2008 Oct; 184:663-7. DOI: 10.1016/j.jpowsour.2008.01.004.
- 2. Cheng J, Zhang L, Yang YS, Wen YH, Cao GP, Wang XD. Preliminary study of single flow zinc-nickel battery. Electrochem Commun. 2007 Nov; 9:2639-42. DOI: 10.1016/j.elecom.2007.08.016.
- 3. Zhang XG, editor. Corrosion and Electrochemistry of Zinc. Springer; 1996. ISBN: 1475798784.
- 4. Huggins RA, editor. Advanced Batteries. Springer; 2009. ISBN: 9780387764238.
- 5. Acton QA, editor. Sulfur Acids-Advances in Research and Application: 2013 Edition. Scholarly Editions; 2013. ISBN: 978-1-481-69276-2.
- 6. Müeller S, Holzer F, Haas O. Optimized zinc electrode for the rechargeable zinc-air battery. J Appl Electrochem. 1998 Sept; 28: 895-8. DOI: 10.1023/A:1003464011815.
- 7. Yuan YF, Tu JP, Wu HM, Li Y, Shi DQ, Zhao XB. Effect of ZnO nanomaterials associated with Ca(OH)2 as anode material for Ni–Zn batteries. J Power Sources. 2006 Sept; 159:357-60. DOI: 10.1016/j.jpowsour.2006.04.010.
- 8. Shivkumar R, Paruthimal Kalaignan G, Vasudevan T. Studies with porous zinc electrodes with additives for secondary alkaline batteries. J Power Sources. 1998 Sept; 75:90-100. DOI: 10.1016/S0378-7753(98)00096-2.
Details
Primary Language
English
Subjects
Engineering, Chemical Engineering
Journal Section
Research Article
Publication Date
December 15, 2017
Submission Date
December 11, 2017
Acceptance Date
December 23, 2017
Published in Issue
Year 2018 Volume: 5 Number: 1
Cited By
Characteristics of Ni-Zn Rechargeable Batteries with Zn Anode Prepared by Using Nano-Cellulose as its Binder Agent
Materials Science Forum
https://doi.org/10.4028/www.scientific.net/MSF.1028.105
