The multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells
➤ Gửi thông báo lỗi ⚠️ Báo cáo tài liệu vi phạmNội dung chi tiết: The multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells
The multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells
VIET NAM NATIONAL UNIVERSITY HO CHI MINI I CITYHO CHI MINH CITY UNIVERSITY7 OF TECHNOLOGYHAU QUOC PHAMTHE MULTIFUNCTIONAL TixWi xOl (x = 0.5; 0.6; 0.7 The multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells 7; 0.8) SUPPORT FOR PLATINUM TO ENHANCE THE ACTIVITY7 AM) CO-TOLERANCE OF DIRECT ALCOHOL FUEL CELLSA dissertation submitted ibr the degree ofDoctor of PhilosophyHO CHI MINI I CITY-2022VIET NAM NATIONAL UNIVERSITY HO CHI MINH CITYHOC III MIMI CITY UNIVERSITY or TECHNOLOGYUAL QUOC PHAMTHE MULTIFUNCTIO The multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells NAL TixVVixOz (x = 0.5; 0.6; 0.7; 0.8)SUPPORT FOR PLATINUM TO ENHANC E THE ACTIV ITY AND CO-TOLERANCE OF DIRECT ALCOHOL FUEL CELLSA dissertation submiThe multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells
tted for the degree ofDoctor of PhilosophyMajor subject: Chemical EngineeringMajor subject code: 9520301Independent Reviewer:Independent Reviewer:ReviVIET NAM NATIONAL UNIVERSITY HO CHI MINI I CITYHO CHI MINH CITY UNIVERSITY7 OF TECHNOLOGYHAU QUOC PHAMTHE MULTIFUNCTIONAL TixWi xOl (x = 0.5; 0.6; 0.7 The multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells Till THANH no2. ASSOC. PROF. SON TRUONG NGUYENPLEDGEI pledge that this dissertation is my study under the direel guidance of Assoc. Prof. Van Thi Thanh Ho and Assoc. Prof. Son Truong Nguyen. The study results and conclusions in this dissertation arc honest, and not copied from any one source and in The multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells any form. The reference to the sources of documents (if any) has been cited and the reference sources arc recorded as prescribed.SignatureHau Quoc PhThe multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells
am1ABSTRACTThe worldwide environment has been getting worse day by day because of the emission of various harmful pollutants into the environment fromVIET NAM NATIONAL UNIVERSITY HO CHI MINI I CITYHO CHI MINH CITY UNIVERSITY7 OF TECHNOLOGYHAU QUOC PHAMTHE MULTIFUNCTIONAL TixWi xOl (x = 0.5; 0.6; 0.7 The multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells ainable and renewable energy sources has sparked interest as future alternatives. Recently, direct alcohol fuel cells (D AFC's) have been considered a promising green energy source in portable and transportation applications due to their relatively simple infrastructure, portability, operation cost, The multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells easy storage, and conveyance of alcohol fuels. Nonetheless, the sluggish oxidation kinetics and “CO-like poisoning" effect of catalysts are limitatioThe multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells
ns for commercializing DAFCs. Alloying Pt with Ru is regarded as an efficient anodic DAFC catalyst owing to its high electrochemical activity and greaVIET NAM NATIONAL UNIVERSITY HO CHI MINI I CITYHO CHI MINH CITY UNIVERSITY7 OF TECHNOLOGYHAU QUOC PHAMTHE MULTIFUNCTIONAL TixWi xOl (x = 0.5; 0.6; 0.7 The multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells ytic stability of this alloy catalyst. Furthermore, the high price and low natural abundance of Ru are drawbacks of particular uses.To address aforementioned problems, we fabricate TixWi-xOa (X = 0.5; 0.6: 0.7; 0.8) nanostructures as multifunctional support with co-catalytic functionality to prevent The multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells or reduce the deterioration of anodic catalyst in DAFCs. Additionally, tuning morphology and structure of metal catalyst are also combined to enhanceThe multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells
the catalytic performance of electrocatalyst, thereby promoting large-scale DAFC applications.Various mesoporous TixWi-xO? (x = 0.5; 0.6: 0.7: 0.8) sVIET NAM NATIONAL UNIVERSITY HO CHI MINI I CITYHO CHI MINH CITY UNIVERSITY7 OF TECHNOLOGYHAU QUOC PHAMTHE MULTIFUNCTIONAL TixWi xOl (x = 0.5; 0.6; 0.7 The multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells % Pt TixWi-xOj catalysts for ethanol electrooxidation reaction (EOR). As a result, the surface area and electrical conductivity of as-prepared supports are drastically increased with the doped tungsten contents of 20 at% (Tio.8Wo.2O2) and 30 at% (Tio.7Wo.3O2). With rising the doped tungsten content The multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells up to 40 at% (Tio.iWo.4O2), the electrical conductivity is almost unchanged, whereas the surface area is remarkably decreased. This implies that the aThe multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells
ddition of proper doped tungsten content into TiO> lattices results in an enormous enhancement in both surface area and electrical conductivity. Also,VIET NAM NATIONAL UNIVERSITY HO CHI MINI I CITYHO CHI MINH CITY UNIVERSITY7 OF TECHNOLOGYHAU QUOC PHAMTHE MULTIFUNCTIONAL TixWi xOl (x = 0.5; 0.6; 0.7 The multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells Pt TixWi-xO? (X = 0.6; 0.7; 0.8) catalyst shows the catalytic performance better than the commercial 20 wt% Pt/C (E-TEK) catalyst. Among as-made catalysts, 20 wt% Pt Tio.-Wo.3O2 catalyst displays the highest mass activity (260. 23 mA mgpt1) and largest Ip'Ib ratio (1.34). which are 2.0- and 1.57-fo The multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells ld greater than those of 20 wt% Pt c (E-TEK) catalyst (130.62 mA mgpt1 for mass activity and 0.85 for If/Ib value, respectively). After 5000-cycling AThe multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells
DT. as-made catalysts show the mass activity loss about twice as lower than the commercial catalyst that exhibits great EOR stability. Experimental reVIET NAM NATIONAL UNIVERSITY HO CHI MINI I CITYHO CHI MINH CITY UNIVERSITY7 OF TECHNOLOGYHAU QUOC PHAMTHE MULTIFUNCTIONAL TixWi xOl (x = 0.5; 0.6; 0.7 The multifunctional tixw1 xo2 (x=0 5; 0 6; 0 7; 0 8) support for platinum to enhance the activity and co tolerance of direct alcohol fuel cells for fuel cells.VIET NAM NATIONAL UNIVERSITY HO CHI MINI I CITYHO CHI MINH CITY UNIVERSITY7 OF TECHNOLOGYHAU QUOC PHAMTHE MULTIFUNCTIONAL TixWi xOl (x = 0.5; 0.6; 0.7Gọi ngay
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