International ConferencePassive Direct Methanol Fuel Cell with Sputtered Catalyst on Electrolyte Membrane Wonyeop Jeong, Sangbong Ryu, Zhize Deng, Suk Won Cha, Ikwhang Chang, Taehyun Park 20180717 ~ 20180720 The 9th International Conference on Technological Advances of Thin Films & Surface Coatings (ThinFilms2018)