APPLICATION OF THE NANOCOMPOSITE MEMBRANE AS ELECTROLYTE OF PROTON EXCHANGE MEMBRANE FUEL CELL - ., Mahreni; Jurusan Teknik Kimia, F T I-Universitas Pembangunan Nasional Veteran Jl. SWL. 104 Lingkar Utara Condong Catur, Yogyakarta (55283) (BATAN, 2013)