Self-humidification of a PEM fuel cell using a novel Pt/SiO2/C anode catalyst

Highly performed non-humidification membrane electrode assembly prepared with binary RuO2–SiO2 oxide supported Pt catalysts as anode

“…Recently, our group reported a method to increase the stability of the non-humidification MEA for long-time run [6]. The novelty of the method was to use Pt/SiO 2 /C anode catalyst to construct non-humidification MEA.…”

Self-humidifying membrane electrode assembly prepared by adding PVA as hygroscopic agent in anode catalyst layer

“…These values are almost same as the performance of MEA PVA5 under the 100% of humidification. To our knowledge, this result is better than that of self humidification MEAs reported previously, with adding inorganic water retention materials in anode catalyst layer or using self humidification catalyst in anode, at same low Pt loading and same operation conditions [20,21]. That is because PVA exhibit strong moisturizing capabilities and absorb water to wetting Nafion membrane at low current density under the low humidity condition.…”

“…However, there is little literature reporting the performance of the self-humidifying MEA after long-time running. Recently, our group successfully synthesized self-humidifying catalysts Pt/SiO 2 /C by modified carbon with tetraethylorthosilicate, followed by depositing platinum nanoparticles on the modified catalyst support [20,21]. When these catalysts were used in anode and the amount of SiO 2 is 10 wt.%, the current density of MEA remains at 0.65 A$cm À2 without obvious drop at 0.6 V after 120 h operation at 50 C and 28% RH.…”

Operational Conditions Affecting Hydrogen Production by the Photoreforming of Organic Compounds using Titania Nanoparticles with Gold

“…However, one of the barriers to the expansion of the use of hydrogen is its current unsustainable production process,w hich is mainly based on fossil fuels;t he steam reforming of methane and the gasification of coal share 96 %o fthe world market. [1] Besides cleaner electrochemical processes, [2][3][4][5][6] numerous productionm ethods have been studied to look for am ore sustainable productions ystem such as thermochemical processes using biomass,g asification, [7][8][9][10][11][12][13] and pyrolysis [14][15][16][17][18] and biological processesb yd ark [19][20][21][22][23] and photofermentation [20,[24][25][26][27] using bacteria and microalgae.I fw ec onsider solar energy as af ront-running clean, abundant, and secure energy source,s omer esearchers have faced the increasing demand for energy by proposing ap hotocatalytic hydrogen productionp rocess [28][29][30] as aw ay to store solar energya s chemical energy. [31] Factors affecting photocatalytic hydrogen generation Most studies in the field of photocatalysis are focusedo nt he synthesis,c haracterization of properties,a nd testing of nanomaterials able to catalyze the degradation of pollutants, [32][33][34][35][36][37][38][39]…”