| Degradation and fault diagnosis of photovoltaic cells using impedance spectroscopy N Katayama, S Osawa, S Matsumoto, T Nakano, M Sugiyama Solar Energy Materials and Solar Cells 194, 130-136, 2019 | 49 | 2019 |
| Real-time electrochemical impedance diagnosis for fuel cells using a DC–DC converter N Katayama, S Kogoshi IEEE Transactions on Energy Conversion 30 (2), 707-713, 2014 | 41 | 2014 |
| New topology for dc–dc converters used in fuel cell–electric double layer capacitor hybrid power source systems for mobile devices N Katayama, S Tosaka, T Yamanaka, M Hayase, K Dowaki, S Kogoshi IEEE Transactions on Industry Applications 52 (1), 313-321, 2015 | 35 | 2015 |
| Fault diagnosis of photovoltaic modules using AC impedance spectroscopy S Osawa, T Nakano, S Matsumoto, N Katayama, Y Saka, H Sato 2016 IEEE International Conference on Renewable Energy Research and …, 2016 | 23 | 2016 |
| A LCA on the H2S and HCl removal procedures using in HAS-clays K Dowaki, S Kuroda, H Saruya, N Katayama, Y Seo, T Ishiyama, K Sato, ... Journal of the Japan Institute of Energy 97 (7), 160-170, 2018 | 17 | 2018 |
| Optimal levels of oxygen deficiency in the visible light photocatalyst TiO2− x and long-term stability of catalytic performance T Nakano, R Ito, S Kogoshi, N Katayama Journal of Physics and Chemistry of Solids 98, 136-142, 2016 | 11 | 2016 |
| Investigation of multilayered catalyst layers for polymer electrolyte fuel cells by electrospray deposition H Arai, M Irita, N Katayama ECS Transactions 98 (9), 333, 2020 | 10 | 2020 |
| System analysis of the drone with fc battery fueled by Bio-hydrogen S Yamate, Y Fujiwara, H Tadokoro, N Katayama, Y Seo, M Kameyama, ... Journal of the Japan Institute of Energy 97 (11), 336-341, 2018 | 9 | 2018 |
| Improvement of power capacity of electric-assisted bicycles using fuel cells with metal hydride C Misaki, D Hara, N Katayama, K Dowaki Energies 13 (23), 6272, 2020 | 8 | 2020 |
| Experimental study of the visible-light photocatalytic activity of oxygen-deficient TiO2 prepared with Ar/H2 plasma surface treatment T Nakano, S Yazawa, S Araki, S Kogoshi, N Katayama, Y Kudo, ... Japanese Journal of Applied Physics 54 (1S), 01AE04, 2014 | 8 | 2014 |
| Frequency characteristic of a fuel cell-EDLC hybrid power source system with a multi-port bidirectional DC-DC converter N Katayama, S Kogoshi 8th International Conference on Power Electronics-ECCE Asia, 2561-2564, 2011 | 8 | 2011 |
| Environmental impacts of fuel cell assisted bicycles in a sharing scheme E Hosobuchi, C Misaki, N Katayama, Y Long, K Dowaki Journal of the Japan Institute of Energy 99 (11), 230-235, 2020 | 7 | 2020 |
| Study on metal hydride performance for purification and storage of bio-H2 S Ashida, N Katayama, K Dowaki, M Kameyama Journal of the Japan Institute of Energy 96 (8), 300-306, 2017 | 7 | 2017 |
| Modeling of sodium tetrahydroborate power system for fuel cell vehicle K Tomoda, N Katayama, N Hoshi, A Yoshizaki, K Hirata ECS Transactions 65 (1), 33, 2015 | 7 | 2015 |
| A study on transient behavior of off-gas impurity concentration from metal hydride S Ashida, N Katayama, K Dowaki, M Kameyama 2018 7th International Conference on Renewable Energy Research and …, 2018 | 6 | 2018 |
| A system analysis of storage alloy for Bio-H2 in consideration of the purification performance K Dowaki, N Katayama, T Nagaishi, S Kuroda, M Kameyama Journal of the Japan Institute of Energy 96 (8), 266-272, 2017 | 6 | 2017 |
| Stabilization effect on hydrogen pressure for fuel cell fueled by sodium tetrahydroborate with multiple power converter control K Tomoda, Y Aisaka, T Fukuzawa, N Hoshi, N Katayama, A Yoshizaki, ... IEEE Transactions on Industry Applications 53 (2), 1200-1209, 2016 | 6 | 2016 |
| Fuel cell/electric double layer capacitor hybrid power source using a multi-port bidirectional DC-DC converter N Katayama, S Kogoshi IEEJ Transactions on Industry Applications 130 (11), 1279-1280, 2010 | 6 | 2010 |
| Gradational structured catalyst layer for proton exchange membrane fuel cells S Okuno, N Katayama ECS Transactions 83 (1), 87, 2018 | 5 | 2018 |
| Verification of control method of multiple power converter to stabilize hydrogen supply from reactor fueled by sodium tetrahydroborate K Tomoda, Y Aisaka, T Fukuzawa, N Hoshi, N Katayama, A Yoshizaki, ... 2015 IEEE Energy Conversion Congress and Exposition (ECCE), 1327-1332, 2015 | 5 | 2015 |
