Hydroponics gel as a new electrolyte gelling agent for alkaline zinc–air cells

Othman, Raihan; Basirun, Wan Jefrey; Yahaya, Abdul Hamid; Arof, A. K.

doi:10.1016/s0378-7753(01)00823-0

Cited by 81 publications

(35 citation statements)

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“…[ 123 ] Muller et al used cellulose as a gelling agent to optimize and stabilize the porosity of the zinc electrode, [ 124 ] and Othman et al introduced hydroponics gels such as agar to increase the capability of storing electrolyte. [ 125 ] When a porous zinc anode reacts with an alkaline electrolyte, the corrosion effect of the zinc metal can be another criterion for stabilizing a zinc anode with large surface area. Hydrogen evolution on the surface of the zinc anode deteriorates the utilization effi ciency of the zinc, resulting both in increased internal pressure in the cell and water electrolysis.…”

Section: Anode: Zinc Electrodementioning

confidence: 99%

Metal–Air Batteries with High Energy Density: Li–Air versus Zn–Air

Lee

Kim

Cao

et al. 2010

Advanced Energy Materials

2,008

1,216

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In the past decade, there have been exciting developments in the fi eld of lithium ion batteries as energy storage devices, resulting in the application of lithium ion batteries in areas ranging from small portable electric devices to large power systems such as hybrid electric vehicles. However, the maximum energy density of current lithium ion batteries having topatactic chemistry is not suffi cient to meet the demands of new markets in such areas as electric vehicles. Therefore, new electrochemical systems with higher energy densities are being sought, and metal-air batteries with conversion chemistry are considered a promising candidate. More recently, promising electrochemical performance has driven much research interest in Li-air and Zn-air batteries. This review provides an overview of the fundamentals and recent progress in the area of Li-air and Zn-air batteries, with the aim of providing a better understanding of the new electrochemical systems.

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Section: Anode: Zinc Electrodementioning

confidence: 99%

Metal–Air Batteries with High Energy Density: Li–Air versus Zn–Air

Lee

Kim

Cao

et al. 2010

Advanced Energy Materials

2,008

1,216

View full text Add to dashboard Cite

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“…Studies on such systems, for instance, included polyethylene oxide (PEO) + potassium hydroxide (KOH) [1][2][3][4], polyvinyl alcohol (PVA) + KOH [4][5][6][7][8], PVA + PEO + KOH [9], epichlorohydrin + ethylene oxide P(ECH-co-EO) + KOH [10], PVA + poly(epichlorohydrin) + KOH [11], hydroponics gel + KOH [12][13][14] and polyacrylic acid + KOH [15]. The PVA + KOH systems have shown promising results when applied in the solid-state nickel metal hydride (Ni-MH) batteries [7] and Ni-Zn batteries [8].…”

Section: Introductionmentioning

confidence: 99%

Effect of storage time on the properties of PVA–KOH alkaline solid polymer electrolyte system

Mohamad

Arof

2006

Ionics

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Polyvinyl alcohol (PVA) and potassium hydroxide (KOH) have been used to prepare alkaline solid polymer electrolytes (ASPE) films. The films were stored in a dry environment for 30 and 100 days. The highest room temperature conductivity for the PVA:KOH film with weight percentage ratio of 1:0.67 during storage for 30 and 100 days were (8.5±0.2)×10 −4 and (1.3±0.1)×10 −7 S cm −1 , respectively. The conductivity-temperature behaviour after 30 and 100 days of storage of the alkaline polymer electrolytes is Arrhenian and liquid-like. The structural, morphological and thermal studies of the ASPE films are also presented in this paper.

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“…Reports on alkaline solid polymer electrolytes (ASPE) or alkaline solid polymer blend electrolytes (ASPBE) using potassium hydroxide (KOH) as ionic dopant is rather limited compared to polymer-lithium salt. The polymer + KOH system that has been reported are poly(ethylene oxide) PEO + KOH [3][4][5][6], poly(vinyl alcohol) PVA + KOH [7][8][9][10], blends of (PVA + PEO) + KOH [11][12], copolymer of epichlorohydrin and ethylene oxide P(ECH-co-EO) + KOH [13], gels of hydro phonics + KOH [14] and poly(acrylic acid) PAA + KOH [15]. The results have shown considerable improvement in cell properties.…”

Section: Introductionmentioning

confidence: 99%

Electrical conductivity studies on PVA/PVP-KOH alkaline solid polymer blend electrolyte

Hatta

Yahya

Ali

et al. 2005

Ionics

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Abstract.A series of conducting thin-film solid electrolytes based on poly (vinyl alcohol)/poly (vinyl pyrrolidone) (PVA/PVP) polymer blend was prepared by the solution casting technique. PVA and PVP were mixed in various weight percent ratios and dissolved in 20 ml of distilled water. The samples were analyzed by using impedance spectroscopy in the frequency range between 100 Hz and 1 MHz. The PVA/PVP system with a composition of 80% PVA and 20 wt.% PVP exhibits the highest conductivity of (2.2 + 1.4) x 10 .7 gem 1. The highest conducting PVA/PVP blend was then further studied by adding different amounts of potassium hydroxide (KOH) ionic dopant. Water has been used as solvent to prepare PVA/PVP-KOH based alkaline solid polymer blend electrolyte films. The conductivity was enhanced to (1.5 + 1.1) x 10 4 acre-1 when 40 wt.% KOH was added.

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Hydroponics gel as a new electrolyte gelling agent for alkaline zinc–air cells

Cited by 81 publications

References 1 publication

Metal–Air Batteries with High Energy Density: Li–Air versus Zn–Air

Metal–Air Batteries with High Energy Density: Li–Air versus Zn–Air

Effect of storage time on the properties of PVA–KOH alkaline solid polymer electrolyte system

Electrical conductivity studies on PVA/PVP-KOH alkaline solid polymer blend electrolyte

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