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An optimized microfluidic paper-based NiOOH/Zn alkaline battery
Samantha Burrola1, Maria Jose Gonzalez-Guerrero1, Ani Avoundjian1
1Department of Chemistry and Biochemistry, California State University, Los Angeles, CA, USA.
Electrophoresis
|May 30, 2018
Summary
A novel alkaline nickel oxide hydroxide/zinc (NiOOH/Zn) battery utilizes a cellulose separator for a lightweight, stable power source. Optimized for performance, it offers potential for short-term, portable energy needs.
Area of Science:
- Electrochemistry
- Materials Science
- Energy Storage
Background:
- Development of lightweight and stable battery systems is crucial for portable electronics.
- Alkaline battery chemistries offer cost-effectiveness and good performance.
Purpose of the Study:
- To present a novel alkaline nickel oxide hydroxide/zinc (NiOOH/Zn) battery with a cellulose matrix separator.
- To optimize the battery's performance by adjusting cathode ink amount and separator thickness.
- To evaluate the battery's power output and potential applications.
Main Methods:
- Layer-by-layer assembly of metallic electrodes and a cellulose paper separator.
- Optimization of NiOOH-ink loading (11.1 mg/cm²) and separator thickness (360 μm).
- Electrochemical characterization including voltage, current density, and power density measurements using potassium hydroxide (KOH) electrolyte.
Main Results:
- Achieved a maximum voltage of 1.35 ± 0.05 V and power density of 0.56 ± 0.01 mW/cm².
- Demonstrated a maximum current of 23.9 mA and maximum power of 1.26 mW.
- Successfully powered a small device for approximately 22 minutes using four series-connected batteries.
Conclusions:
- The developed NiOOH/Zn battery is lightweight, mechanically stable, and easy to use.
- The optimized battery system shows promise for short-term, low-power applications.
- This battery design offers a viable solution for portable energy demands.
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