A positive-electrolyte-negative(PEN)assembly solid oxide fuel cell(SOFC)with a thin electrolyte film for intermediate temperature operation was fabricated.Instead of the traditional screen-printing method,both anode a...A positive-electrolyte-negative(PEN)assembly solid oxide fuel cell(SOFC)with a thin electrolyte film for intermediate temperature operation was fabricated.Instead of the traditional screen-printing method,both anode and cathode catalysts were pressed simultaneously and formed with the fabrication of nano-composite electrolyte by press method.This design offered some advantageous configura-tions that diminished ohmic resistance between electrolyte and electrodes.It also increased the proton-conducting rate and improved the performance of SOFCs due to the reduction of membrane thickness and good contact between electrolyte and electrodes.The fabricated PEN cell generated electricity between 600℃ and 680℃ using H2S as fuel feed and air as oxidant.Maximum power densities 40 mW·cm^(-2) and 130 mW·cm^(-2) for the PEN configuration with a Mo-Ni-S-based composite anode,nano-composite electrolyte(Li_(2)SO_(4)+Al_(2)O_(3))film and a NiO-based composite cathode were achieved at 600℃ and 680℃,respectively.展开更多
基金supported by the Natural Science Foundation of Guangdong Province(No.05006552).
文摘A positive-electrolyte-negative(PEN)assembly solid oxide fuel cell(SOFC)with a thin electrolyte film for intermediate temperature operation was fabricated.Instead of the traditional screen-printing method,both anode and cathode catalysts were pressed simultaneously and formed with the fabrication of nano-composite electrolyte by press method.This design offered some advantageous configura-tions that diminished ohmic resistance between electrolyte and electrodes.It also increased the proton-conducting rate and improved the performance of SOFCs due to the reduction of membrane thickness and good contact between electrolyte and electrodes.The fabricated PEN cell generated electricity between 600℃ and 680℃ using H2S as fuel feed and air as oxidant.Maximum power densities 40 mW·cm^(-2) and 130 mW·cm^(-2) for the PEN configuration with a Mo-Ni-S-based composite anode,nano-composite electrolyte(Li_(2)SO_(4)+Al_(2)O_(3))film and a NiO-based composite cathode were achieved at 600℃ and 680℃,respectively.
