Nano porous silicon membrane with channels for micro direct methanol fuel cells

2011 ◽  
Author(s):  
Mei Wang ◽  
Xiaohong Wang ◽  
Shan Wu ◽  
Zhimin Tan ◽  
Litian Liu ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Porous Silicon ◽  
Direct Methanol Fuel Cells ◽  
Silicon Membrane ◽  
Direct Methanol ◽  
Methanol Fuel Cells

Effects of grafting parameters on the properties of proton exchange membranes based on sulfo-functionalized porous silicon for micro direct methanol fuel cells

2019 ◽  
Vol 39 (7) ◽  
pp. 620-627 ◽  
Author(s):  
Mei Wang ◽  
Litian Liu ◽  
Xiaohong Wang
Keyword(s):  
Fuel Cells ◽  
Porous Silicon ◽  
Proton Exchange Membrane ◽  
Direct Methanol Fuel Cells ◽  
Electrochemical Impedance ◽  
Proton Exchange ◽  
Competitive Reaction ◽  
Chemical Grafting ◽  
Direct Methanol ◽  
Methanol Fuel Cells

Abstract 3-Mercaptopropyltrimethoxysilane [MPTMS, (CH3O)3SiCH2CH2CH2SH] can be grafted to porous silicon via a simple chemical grafting method and then sulfonated to prepare a proton exchange membrane (PEM) for application in micro direct methanol fuel cells (μDMFCs). The concentration of MPTMS and the pH of the solvent, which is varied by adding glacial acetic acid (GAA), play important roles in the chemical grafting process. In this work, PEMs based on sulfo-functionalized porous silicon were prepared at MPTMS concentrations ranging from 10 wt.% to 90 wt.% and GAA concentrations ranging from 0 wt.% to 10 wt.% to study the effects of grafting parameters on the proton transport properties of PEMs. Electrochemical impedance spectroscopy shows that the proton conductivity of the PEMs can be tuned by changing the MPTMS and GAA concentrations, and it reaches a maximum of 0.082 S/cm at an MPTMS concentration of 30 wt.% and a GAA concentration of 5 wt.%. The effects of MPTMS and GAA concentrations on the properties of PEMs are discussed in the context of two competitive reaction pathways of MPTMS molecules: dehydration condensation with silanols on the walls of porous silicon and self-polymerization.

Progress and Perspectives in Passive Direct Methanol Fuel Cells Operating with Concentrated Methanol

2012 ◽  
Vol 7 (3) ◽  
pp. 1-7
Author(s):  
Naveen K. Shrivastavaa ◽  
◽  
Shashikant B. Thombreb ◽  
Kailas L. Wasewar ◽  
◽  
...  
Keyword(s):  
Fuel Cells ◽  
Direct Methanol Fuel Cells ◽  
Direct Methanol ◽  
Methanol Fuel Cells

Hierarchical Nanostructured Pt8Ti-TiO2/C as an Efficient and Durable Anode Catalyst for Direct Methanol Fuel Cells

ACS Catalysis ◽  
2015 ◽  
Vol 5 (12) ◽  
pp. 7321-7327 ◽  
Author(s):  
Jakkid Sanetuntikul ◽  
Kriangsak Ketpang ◽  
Sangaraju Shanmugam
Keyword(s):  
Fuel Cells ◽  
Direct Methanol Fuel Cells ◽  
Anode Catalyst ◽  
Direct Methanol ◽  
Methanol Fuel Cells

Layer-by-layer self-assembly of PDDA/PWA–Nafion composite membranes for direct methanol fuel cells

2010 ◽  
Vol 46 (9) ◽  
pp. 1434 ◽  
Author(s):  
Meng Yang ◽  
Shanfu Lu ◽  
Jinlin Lu ◽  
San Ping Jiang ◽  
Yan Xiang
Keyword(s):  
Fuel Cells ◽  
Self Assembly ◽  
Direct Methanol Fuel Cells ◽  
Composite Membranes ◽  
Layer By Layer ◽  
Direct Methanol ◽  
Methanol Fuel Cells
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