Fabrication of an aa-scale aqueous zinc-ion battery using silver nanoparticle-enhanced zinc anode and manganese dioxide composite cathode Jhonde T. Garcia, Louiesse Marie S. Garcia, and Lowelry S.Ybañez.--

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Garcia, Jhonde T [author]

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TextPublication details: Manila: Technological University of the Philippines, 2025.Description: viii, 160pages: 29cmContent type:

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BTH RB 37 G37 2025

Dissertation note: College Of Science.-- Bachelor of applied science in laboratory technology: Technological University of the Philippines, 2025. Summary: AZIBS are rechargeable energy storage devices that use zinc-ion in water-based electrolytes. This study presents the fabrication and performance evaluation of an AA-scale aqueous zinc-ion battery (AZIB) utilizing silver nanoparticle-enhanced zinc anode and a manganese dioxide composite cathode as a safer and more sustainable alternative to lithium-ion battery (LIB). The zinc anode was partially coated with silver nanoparticles (AgNPs) through a single displacement galvanic reaction using a 0.1 M AgNO3 solution, utilizing a 1-second dip at a 75° angle method. Surface characterization through digital microscopy and SEM-EDX confirmed the morphology and elemental analysis of the anode before and after use, allowing for the observation of the suppression of dendrite growth and mitigation of the hydrogen evolution reaction (HER), two major limitations of AZIBs. The MnO2 cathode was optimized with graphite powder as a carbon conductive additive, carboxymethyl cellulose (CMC) as a binder, and carbon fiber and graphite sheet as current collectors, using a 25% concentration of ZnSO4 as the electrolyte. The assembled battery, tested under a short period (24 hours), delivered a voltage an output of 1.5 V that successfully powered a series of two 5 mm red super bright LED and four 5 mm Yellow LED connected in parallel. It exhibited a discharge current of ~120 mA at 1.5 V during capacity pretests and demonstrated a stable charge-discharge cycle and 0.5C C-rate. In comparison to commercial AA LIBs, the fabricated AZIB showed an energy density of 50 Wh/L, and power output of 166.06 mW, showing a competitive performance.

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Bachelor's thesis

College Of Science.--
Bachelor of applied science in laboratory technology: Technological University of the Philippines,
2025.

Includes bibliographic references and index.

AZIBS are rechargeable energy storage devices that use zinc-ion in water-based
electrolytes. This study presents the fabrication and performance evaluation of an AA-scale
aqueous zinc-ion battery (AZIB) utilizing silver nanoparticle-enhanced zinc anode and a
manganese dioxide composite cathode as a safer and more sustainable alternative to
lithium-ion battery (LIB). The zinc anode was partially coated with silver nanoparticles
(AgNPs) through a single displacement galvanic reaction using a 0.1 M AgNO3 solution,
utilizing a 1-second dip at a 75° angle method. Surface characterization through digital
microscopy and SEM-EDX confirmed the morphology and elemental analysis of the anode
before and after use, allowing for the observation of the suppression of dendrite growth
and mitigation of the hydrogen evolution reaction (HER), two major limitations of AZIBs.
The MnO2 cathode was optimized with graphite powder as a carbon conductive additive,
carboxymethyl cellulose (CMC) as a binder, and carbon fiber and graphite sheet as current
collectors, using a 25% concentration of ZnSO4 as the electrolyte. The assembled battery,
tested under a short period (24 hours), delivered a voltage an output of 1.5 V that
successfully powered a series of two 5 mm red super bright LED and four 5 mm Yellow
LED connected in parallel. It exhibited a discharge current of ~120 mA at 1.5 V during
capacity pretests and demonstrated a stable charge-discharge cycle and 0.5C C-rate. In
comparison to commercial AA LIBs, the fabricated AZIB showed an energy density of 50
Wh/L, and power output of 166.06 mW, showing a competitive performance.

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