The Effect of Silane Addition on Chitosan-Fly Ash/CTAB as Electrolyte Membrane

11th Joint Conference on Chemistry in Conjunction with the 4th Regional Biomaterials Scientific Meeting

材料科学;化学;生物科学

Kusumastuti, E.^1 ; Isnaeni, D.^1 ; Sulistyaningsih, T.^1 ; Mahatmanti, F.W.^1 ; Jumaeri^1 ; Atmaja, L.^2 ; Widiastuti, N.^2

Chemistry Department, Faculty of Mathematics and Natural Sciences, State University of Semarang, Sekaran Unnes Campus, Gunungpati, Semarang, Indonesia^1

Chemistry Department, Faculty of Mathematics and Natural Sciences, Tenth November Institute of Technology, Keputih ITS Campus, Sukolilo, Surabaya, Indonesia^2

关键词: Electrolyte membrane;    Fuel cell performance;    Interfacial morphologies;    Membrane characterization;    Membrane performance;    Methanol permeability;    Morphology analysis;    Physical interactions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/172/1/012016/pdf
DOI  :  10.1088/1757-899X/172/1/012016

来源: IOP

【 摘 要 】

Electrolyte membrane is an important component in fuel cell system, because it may influence fuel cell performance. Many efforts have been done to produce electrolyte membrane to replace comercial membrane. In this research, electrolyte membrane is composed of chitosan as an organic matrix and fly ash modified with CTAB and silane as inorganic filler. Fly ash is modified using silane as coupling agent to improve interfacial morphology between organic matrix and inorganic filler. This research aims to determine the best membrane performance based on its characteristics such as water uptake, mechanical properties, proton conductivity, and methanol permeability. The steps that have been done include silica preparation from fly ash, modification of silica surface with CTAB, silica coupling process with silane, synthesis of membranes with inversion phase method, and membrane characterization. The result shows that membrane C-FA/CTAB-Silane 10% (w/w) has the best performance with proton conductivity 8.00 x 10-4S.cm-1, methanol permeability 3.37 x 10-7cm.s-1, and selectivity 2.12 x 103S.s.cm-3. The result of FTIR analysis on membrane C-FA/CTAB-Silane 10% shows that there is only physical interaction occured between chitosan, fly ash and silane, because there is no peak differences significantly at wave number 1000-1250 cm-1, while morphology analysis on membrane with Scanning Electron Microscopy (SEM) shows good dispersion and there is no agglomeration on chitosan matrix.