Abstract:
PURPOSE: An electrode for a fuel cell is provided to maintain an enough amount of acid components as a proton carrier within a catalyst layer while the carrier of a catalyst use at least partly graphitized carbon with small specific surface area. CONSTITUTION: An electrode for a fuel cell comprises a catalyst layer. The catalyst layer comprises an electrode catalyst in which metal catalyst particles are dipped in a carbon carrier having a graphite structure in at least a part, and a basic organic compound. The catalyst layer can form a hydrogen bond or salts with the basic organic compound and further includes an acidic component having proton conductivity. The BET specific surface area of the carbon carrier is 100~500 m^2/g.
Abstract:
고온?무가습의 조건 하에서도 안정되어 높은 프로톤 전도성을 가지는 고분자 전해질막, 이러한 고분자 전해질막을 제조할 수 있고, 또한 높은 생산성을 가지는 고분자 전해질막의 제조방법 및 이러한 고분자 전해질을 사용함으로써 높은 발전 특성을 가지는 연료전지를 제공한다. 산성 관능기를 가지는 (탄화수소계)고분자 전해질과, 유리산, 유리산과 루이스염기의 혼합물 또는 유리산과 유기염의 혼합물의 어느 1종으로 이루어진 유리산원을 극성 유기용매에 용해시킨 혼합용액을 습식 제막함으로써, 고분자 전해질에 유리산이 도프된 고분자 전해질막을 얻는 고분자 전해질막의 제조방법이 제공된다.
Abstract:
PURPOSE: A method of preparing a polymer electrolyte membrane is provided to prepare a polymer electrolyte membrane that is stable even at high temperatures in non-humidified conditions, thereby having high proton conductivity. CONSTITUTION: A method of preparing a polymer electrolyte membrane comprises: preparing a mixed solution by dissolving a polymer electrolyte in a polar organic solvent, the polymer electrolyte having an acidic functional group and one free acid source selected from the group consisting of a free acid, mixtures of a free acid and Lewis acid, and mixtures of a free acid and an organic salt; and subjecting the mixed solution to wet membrane formation in order to prepare a polymer electrolyte membrane in which the polymer electrolyte is doped with the free acid.