A polyvinyl alcohol/chitosan blend proton exchange membrane for direct methanol fuel cell

Ambili, K. S.; Joseph, Shiny; Sidharthan, Aiswarya

doi:10.1063/1.5130261

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…Further to this, upon polymer blending with CS, SSA could form bond linkage between CS and SPVA polymer chains. Similar findings were obtained by Ambili et al 15 and Witt et al, 13 who reported higher proton conductivity through sulfonation using SSA on CS/PVA membrane.…”

Section: Introductionsupporting

confidence: 89%

“…In accordance with the tabulated experimental results in Table 3, the water uptake decreases with the addition of GA as a crosslinker (Experiment nos. [10][11][12][13][14][15][16][17][18]. A halt in the performance of ionic conductivity at approximately half compared with the sample without GA addition was recorded through the study.…”

Section: Doe Study On Hydrolytic Stability and Ion Conduction Propertiesmentioning

confidence: 88%

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Enhancement in hydrolytic stability and proton conductivity of optimised chitosan/sulfonated poly(vinyl alcohol) composite membrane with inorganic fillers

Wong

Loh

et al. 2021

Intl J of Energy Research

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Summary The study aimed to obtain a chitosan/sulfonated poly(vinyl alcohol) (CS/SPVA) membrane with optimised hydrolytic stability and ion conduction properties by using the Taguchi method. Three factor variables including concentration of glutaraldehyde (GA), crosslinking temperature and crosslinking time were considered. An L18 orthogonal array along with the approach of larger‐the‐better was selected for the optimisation. The highest value in S/N ratio of −19.9947 was observed on sample set 9 without GA involvement, crosslinking temperature of 110°C and time of 90 minutes. The ionic conductivity and water uptake were 8.21 mS/cm and 82.05%, respectively, compared to 7.34 mS/cm and 215.9% of the nonoptimised CS/SPVA15. Further inspection with the incorporation of inorganic fillers (titanium dioxide (TiO2), silicon dioxide (SiO2) and sulfonated graphene oxide (SGO)) was conducted on the optimised CS/SPVA15. The thermomechanical properties of CS/SPVA15 composite membrane was improved with inorganic fillers. In terms of electrochemical properties, ionic conductivity was reduced because of the enhancement in thermal stability. The inorganic filler inhibits the accessible functional groups and increase the ionic resistance of CS/SPVA15 composite membrane. Amongst all samples, CS/SPVA15‐SGO is the most optimised with a minor trade‐off in ionic conductivity (6.82 mS/cm) and IEC (0.8866 mequiv/g) compared with CS/SPVA15, whilst delivering an exceptional hydrolytic stability (76.41%).

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Section: Introductionsupporting

confidence: 89%

Section: Doe Study On Hydrolytic Stability and Ion Conduction Propertiesmentioning

confidence: 88%

Enhancement in hydrolytic stability and proton conductivity of optimised chitosan/sulfonated poly(vinyl alcohol) composite membrane with inorganic fillers

Wong

Loh

et al. 2021

Intl J of Energy Research

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An overview of synthetic polymer-based membrane modified with chitosan for direct methanol fuel cell application

Adiyar

Satriyatama

Azjuba

et al. 2021

IOP Conf. Ser.: Mater. Sci. Eng.

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The materials used for fuel cell membrane must have a high proton conductivity, a strong enough wall to block the reactant flow rate and be chemically or mechanically stable in the environment around the fuel cell. To improve the effectiveness of fuel cell membranes and reduce production costs, several synthetic polymer membranes have been developed, including polyethersulfone, polysulfone, polyvinyl alcohol, and polystyrene. Membranes from this polymer have the advantage of being cheap, commercially available, and allowing its structure to store moisture so it can operate at higher temperatures, yet it has low hydrophilic property. Chitosan, as a biopolymer that has strong hydrophilicity property resulted from numerous hydrophilic groups (e.g. –OH, –NH2 and –NR3 þ), can be used for various chemical modifications including to increase mechanical and chemical stability and modification to the possibility of producing ion exchange and increasing ionic conductivity which is a requirement for fuel cell membrane. The purpose of this study is to review the use of chitosan as synthetic polymer-based membrane modification from its structure and properties. Recent achievements and prospect of its applications have also been included.

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A polyvinyl alcohol/chitosan blend proton exchange membrane for direct methanol fuel cell

Cited by 2 publications

References 4 publications

Enhancement in hydrolytic stability and proton conductivity of optimised chitosan/sulfonated poly(vinyl alcohol) composite membrane with inorganic fillers

Enhancement in hydrolytic stability and proton conductivity of optimised chitosan/sulfonated poly(vinyl alcohol) composite membrane with inorganic fillers

An overview of synthetic polymer-based membrane modified with chitosan for direct methanol fuel cell application

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