전극의 백금함량과 PTFE 함량 및 조작온도가 인산형 연료전지의 다공성 탄소전극 성능에 미치는 영향을 85wt% 인산전해질 중에서 반쪽전지 실험을 통하여 연구하였다. 전극의 백금 담지량이 5, 10, 15, 20wt%로 변함에 따라 Tafel 기울기는 221, 176, 170, 145㎷/decade로, 교환전류밀도는 1.866×10^(-7), 1.307×10^(-7), 9.206×10^(-8), 4.874×10^(-8)A/㎠로 변하였다. 최적 PTFE 함량은 20-30wt% 이었으며 전극반응의 겉보기 활성화에너지는 탄소전극 재료에 관계없이 평형전위에서 약 l17kJ/㏖로 나타났다.

Effects of loading density of Pt and PTFE and operation temperature on the performance of carbon electrode were studied by a half cell in 85 wt% phosphoric acid. As the Pt loading was varied to 5, 10, 15, and 20 wt%, the Tafel slope was changed to 221, 176, 170, and 148 ㎷/decade, respectively, and the exchange current density was changed to 1.866×10^(-7), 1.307×10^(-7), 9.206×10^(-8), and 4.874×10^(-8) A/㎠, respectively. The optimum content of PTFE was found to be 20-30 wt%, and the apparent activation energy of the cathode reaction was found to be approximately 110 kJ/㏖ at the equilibrium potential, regardless of the electrode carbon materials.