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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.

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|May 30, 2018
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Summary
This summary is machine-generated.

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.

Keywords:
Layer-by-layerNiOOH cathodePaper-based batteryZinc-nickel battery

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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.