Functionalized mesoporous structured inorganic materials as high temperature proton exchange membranes for fuel cells

Jiang, San Ping

doi:10.1039/c4ta00121d

Cited by 88 publications

(43 citation statements)

References 177 publications

(243 reference statements)

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“…In addition, the fuel cell performances of resultant membranes drop gradually at high current density region due to the decrease of the voltage caused by the increased gas mass transfer resistance. Similar observations have been found in other literatures[60][61][62][63].…”

supporting

confidence: 91%

Anhydrous proton exchange membranes comprising of chitosan and phosphorylated graphene oxide for elevated temperature fuel cells

Bai

Zhang

et al. 2015

Journal of Membrane Science

109

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supporting

confidence: 91%

Anhydrous proton exchange membranes comprising of chitosan and phosphorylated graphene oxide for elevated temperature fuel cells

Bai

Zhang

et al. 2015

Journal of Membrane Science

109

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“…Entry 7 and entry 12 show that the catalytic activity slightly dropped when the doped amount was more than 1:1 both for Cu and Fe. Interestingly, it can be observed that Cu and Fe simultaneously doped to SiW11O39 showed a better catalytic activity both for conversion and selectivity than pure SiW11O39 and single Cu or Fe-doped SiW11O39 samples (entries[13][14][15][16]. Among four Cu/Fe-codoped catalysts, Cu1.00Fe1.00SiW11 exhibited the highest activity with 98.0 % conversion and 98.3 % selectivity in benzyl alcohol selective oxidation to benzaldehyde.…”

mentioning

confidence: 92%

Cu and Fe-doped monolacunary tungstosilicate catalysts with efficient catalytic activity for benzyl alcohol oxidation and simulation gasoline desulfurization

Dong

Wang

et al. 2017

Materials Research Bulletin

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“…213). Moreover, proton-conducting mesoporous materials, such as phosphotungstic-acid-functionalized mesoporous silica, have shown great potential as membranes for fuel cells that operate at elevated temperatures because of their outstanding stability and efficient proton conductivity at temperatures higher than 100 °C and under low humidity 214,215 .…”

Section: Fuel Cellsmentioning

confidence: 99%

Mesoporous materials for energy conversion and storage devices

2016

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At present, more than 80% of the energy consumed globally is derived from non-renewable fossil fuels such as coal, oil and natural gas. The combustion of these fuels inevitably leads to the emission of CO 2 -a main driver of climate change and other serious environmental effects, including the emission of other dangerous gases. Although mitigating climate change is a multifaceted challenge, one of the pillars of any future low-carbon economy will be a substantially increased dependence on renewable and environmentally friendly energy sources and storage systems. Tremendous progress is being made in developing advanced technologies to meet these challenges. However, to enable the cost-effective, large-scale production of these technologies, further improvement of performance and efficiency is needed. Although unique challenges exist for each technology, the development of functional materials is crucial.Porous solids -in particular, mesoporous solids -are appealing materials in many energy applications owing to their ability to absorb and interact with guest species (including, but not limited to, lithium ions, hydrogen atoms and sulfur molecules) on their outer and inner surfaces, and in the pore spaces 1,2 . According to the International Union of Pure and Applied Chemistry (IUPAC) definition, porous materials are classified into three categories according to their pore sizes: micro porous (<2 nm), mesoporous (2-50 nm) or macro porous (>50 nm). Since the first report of mesoporous silica in the 1990s 3,4 , the variety of mesoporous materials available has rapidly expanded, encompassing a very broad range of compositions.Mesoporous materials have exceptional properties, including ultrahigh surface areas, large pore volumes, tunable pore sizes and shapes, and also exhibit nanoscale effects in their mesochannels and on their pore walls. These features are particularly advantageous for applications in energy conversion and storage [5][6][7][8][9][10] . In principle, high surface areas should provide a large number of reaction or interaction sites for surface or interface-related processes such as adsorption, separation, catalysis and energy storage; however, a high surface area does not necessarily translate to an improved performance in applications. Large pore volumes have shown promise in the loading of guest species and in the accommodation of the expansion and strain relaxation during repeated electrochemical energy storage processes. Uniform and tunable mesopore channels facilitate the transport of atoms, ions and large molecules through the bulk of the material, thereby increasing the number of active sites with high accessibility and overcoming the size restriction encountered with microporous materials. In addition, there are fascinating nanoconfinement effects in the voids of uniform mesochannels, which are advantageous in catalysis and energy storage. 3D nanometre-sized frameworks can produce extraordinary nanoscale effects (that is, surface and quantum effects) that result in mesoporous materials with u...

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Functionalized mesoporous structured inorganic materials as high temperature proton exchange membranes for fuel cells

Abstract: High temperature proton exchange membrane fuel cells based on functionalized mesoporous silica nanocomposite membranes.

Cited by 88 publications

References 177 publications

Anhydrous proton exchange membranes comprising of chitosan and phosphorylated graphene oxide for elevated temperature fuel cells

Anhydrous proton exchange membranes comprising of chitosan and phosphorylated graphene oxide for elevated temperature fuel cells

Cu and Fe-doped monolacunary tungstosilicate catalysts with efficient catalytic activity for benzyl alcohol oxidation and simulation gasoline desulfurization

Mesoporous materials for energy conversion and storage devices

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