The efficiency of chitosan-graphene oxide composite membranes modified with genipin in fuel cell application

The paper reports on the processing of chitosan N-doped reduced graphene oxide (CS/N-rGO) nanocomposite membranes prepared by a facile, dispersion-casting procedure aimed as anion exchange membranes in fuel cells. Genipin (GEN) was used as a crosslinking agent to ameliorate mechanical weakens of nanocomposite membranes, while the N-rGO filler, aside of its role as a mechanical enhancer, is expected to improve the ionic conductivity of membranes. The resulting properties of processed membranes in terms of morphology, tensile strength, elasticity, and ethanol permeability were examined. The relevance of the membranes in terms of efficiency and performance was demonstrated in a single cell test.

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Efficient Chitosan/Nitrogen-Doped Reduced Graphene Oxide Composite Membranes for Direct Alkaline Ethanol Fuel Cells

International Journal of Molecular Sciences ◽

10.3390/ijms22041740 ◽

2021 ◽

Vol 22 (4) ◽

pp. 1740 ◽

Cited By ~ 1

Author(s):

Selestina Gorgieva ◽

Azra Osmić ◽

Silvo Hribernik ◽

Mojca Božič ◽

Jurij Svete ◽

...

Keyword(s):

Fuel Cells ◽

Composite Membranes ◽

Nanocomposite Membranes ◽

Ethanol Fuel ◽

Direct Ethanol Fuel Cells ◽

Graphene Oxides ◽

Reduced Graphene ◽

Structure Morphology ◽

Graphene Derivatives ◽

Doped Graphene

Herein, we prepared a series of nanocomposite membranes based on chitosan (CS) and three compositionally and structurally different N-doped graphene derivatives. Two-dimensional (2D) and quasi 1D N-doped reduced graphene oxides (N-rGO) and nanoribbons (N-rGONRs), as well as 3D porous N-doped graphitic polyenaminone particles (N-pEAO), were synthesized and characterized fully to confirm their graphitic structure, morphology, and nitrogen (pyridinic, pyrrolic, and quaternary or graphitic) group contents. The largest (0.07%) loading of N-doped graphene derivatives impacted the morphology of the CS membrane significantly, reducing the crystallinity, tensile properties, and the KOH uptake, and increasing (by almost 10-fold) the ethanol permeability. Within direct alkaline ethanol test cells, it was found that CS/N rGONRs (0.07 %) membrane (Pmax. = 3.7 mWcm−2) outperformed the pristine CS membrane significantly (Pmax. = 2.2 mWcm−2), suggesting the potential of the newly proposed membranes for application in direct ethanol fuel cells.

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Synthesis, characterization, and performance of nanocomposites containing reduced graphene oxide, polyaniline, and cobalt ferrite

Physica B Condensed Matter ◽

10.1016/j.physb.2021.412974 ◽

2021 ◽

pp. 412974

Author(s):

M. Kooti ◽

A. Naghdi Sedeh ◽

Kh Gheisari ◽

A. Figuerola

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Cobalt Ferrite ◽

Reduced Graphene ◽

And Performance

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Hydrothermal synthesis of reduced graphene oxide for supercapacitor electrode materials and the effect of added sodium alginate on its structure and performance

Journal of Materials Science Materials in Electronics ◽

10.1007/s10854-021-07046-3 ◽

2021 ◽

Author(s):

Yueming Lin ◽

Siyu Su ◽

Rui Wang ◽

Huimin Dai ◽

Liuqin Lai ◽

...

Keyword(s):

Graphene Oxide ◽

Hydrothermal Synthesis ◽

Reduced Graphene Oxide ◽

Sodium Alginate ◽

Electrode Materials ◽

Supercapacitor Electrode ◽

Reduced Graphene ◽

And Performance ◽

Supercapacitor Electrode Materials

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Mussel-inspired strategy towards functionalized reduced graphene oxide-crosslinked polysulfone-based anion exchange membranes with enhanced properties

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2018.07.153 ◽

2018 ◽

Vol 43 (36) ◽

pp. 17461-17474 ◽

Cited By ~ 14

Author(s):

Luyang Miao ◽

Yang Bai ◽

Yufei Yuan ◽

Changli Lü

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Anion Exchange ◽

Anion Exchange Membranes ◽

Reduced Graphene ◽

Enhanced Properties

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Metal-free keratin modified poly(pyrrole-co-aniline)-reduced graphene oxide based nanocomposite materials: A promising cathode catalyst in microbial fuel cell application

Journal of Environmental Chemical Engineering ◽

10.1016/j.jece.2020.103813 ◽

2020 ◽

Vol 8 (3) ◽

pp. 103813 ◽

Cited By ~ 7

Author(s):

Prasanta Pattanayak ◽

Nilkamal Pramanik ◽

Farhan Papiya ◽

Vikash Kumar ◽

Patit Paban Kundu

Keyword(s):

Graphene Oxide ◽

Fuel Cell ◽

Reduced Graphene Oxide ◽

Microbial Fuel Cell ◽

Nanocomposite Materials ◽

Cathode Catalyst ◽

Metal Free ◽

Fuel Cell Application ◽

Reduced Graphene

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Alcohol dehydration performance of pervaporation composite membranes with reduced graphene oxide and graphene quantum dots homostructured filler

Carbon ◽

10.1016/j.carbon.2020.02.042 ◽

2020 ◽

Vol 162 ◽

pp. 318-327 ◽

Cited By ~ 2

Author(s):

Rumwald Leo G. Lecaros ◽

Ma. Elizabeth Bismonte ◽

Bonifacio T. Doma ◽

Wei-Song Hung ◽

Chien-Chieh Hu ◽

...

Keyword(s):

Quantum Dots ◽

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Graphene Quantum Dots ◽

Composite Membranes ◽

Alcohol Dehydration ◽

Reduced Graphene

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Improved adhesion and performance of vertically-aligned mesoporous silica-nanochannel film on reduced graphene oxide for direct electrochemical analysis of human serum

Sensors and Actuators B Chemical ◽

10.1016/j.snb.2019.02.115 ◽

2019 ◽

Vol 288 ◽

pp. 133-140 ◽

Cited By ~ 14

Author(s):

Fengna Xi ◽

Lingli Xuan ◽

Lili Lu ◽

Jie Huang ◽

Fei Yan ◽

...

Keyword(s):

Graphene Oxide ◽

Mesoporous Silica ◽

Human Serum ◽

Reduced Graphene Oxide ◽

Electrochemical Analysis ◽

Reduced Graphene ◽

Vertically Aligned ◽

And Performance

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Improved Performance of an Epoxy Matrix as a Result of Combining Graphene Oxide and Reduced Graphene

International Journal of Polymer Science ◽

10.1155/2013/493147 ◽

2013 ◽

Vol 2013 ◽

pp. 1-7 ◽

Cited By ~ 17

Author(s):

L. Ramos-Galicia ◽

L. N. Mendez ◽

Ana Laura Martínez-Hernández ◽

A. Espindola-Gonzalez ◽

I. R. Galindo-Esquivel ◽

...

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Graphene Oxide ◽

Modulus Of Elasticity ◽

Epoxy Matrix ◽

Neat Epoxy ◽

Synergic Effect ◽

Reduced Graphene ◽

Improved Performance ◽

Tensile Toughness

We present an easy and effective way to improve the mechanical properties of an epoxy matrix by reinforcing it with a combination of graphene oxide (GO) and reduced graphene oxide (RGO). These nanocomposites were prepared with different load of nanofillers: 0.1, 0.4, 0.7, 1.0 wt% and a neat epoxy. Ratios of graphene oxide and reduced graphene (GO : RGO) employed were: 0 : 1, 0.25 : 0.75, 0.5 : 0.5, 0.75 : 0.25, and 1 : 0. Results show that with only 0.4 wt% and a ratio 0.2 : 0.75 of GO : RGO, tensile strength and tensile toughness are 52% and 152% higher than neat epoxy while modulus of elasticity was improved~20%. The obtained results suggest that it is possible achieve advantageous properties by combining graphene in oxidized and reduced conditions as it shows a synergic effect by the presence of both nanofillers.

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