|X-ray absorption analysis of nitrogen contribution to oxygen reduction reaction in carbon alloy cathode catalysts for polymer electrolyte fuel cells|
H Niwa, K Horiba, Y Harada, M Oshima, T Ikeda, K Terakura, J Ozaki, ...
Journal of Power Sources 187 (1), 93-97, 2009
|Selective probing of the OH or OD stretch vibration in liquid water using resonant inelastic soft-X-ray scattering|
Y Harada, T Tokushima, Y Horikawa, O Takahashi, H Niwa, M Kobayashi, ...
Physical review letters 111 (19), 193001, 2013
|X-ray photoemission spectroscopy analysis of N-containing carbon-based cathode catalysts for polymer electrolyte fuel cells|
H Niwa, M Kobayashi, K Horiba, Y Harada, M Oshima, K Terakura, ...
Journal of Power Sources 196 (3), 1006-1011, 2011
|Ultrahigh resolution soft x-ray emission spectrometer at BL07LSU in SPring-8|
Y Harada, M Kobayashi, H Niwa, Y Senba, H Ohashi, T Tokushima, ...
Review of Scientific instruments 83 (1), 013116, 2012
|Elucidation of Rh-induced in-gap states of Rh: SrTiO3 visible-light-driven photocatalyst by soft X-ray spectroscopy and first-principles calculations|
S Kawasaki, K Akagi, K Nakatsuji, S Yamamoto, I Matsuda, Y Harada, ...
The Journal of Physical Chemistry C 116 (46), 24445-24448, 2012
|Indirect contribution of transition metal towards oxygen reduction reaction activity in iron phthalocyanine-based carbon catalysts for polymer electrolyte fuel cells|
M Kobayashi, H Niwa, M Saito, Y Harada, M Oshima, H Ofuchi, ...
Electrochimica Acta 74, 254-259, 2012
|Redox Potential Paradox in Na x MO2 for Sodium-Ion Battery Cathodes|
Y Nanba, T Iwao, BM Boisse, W Zhao, E Hosono, D Asakura, H Niwa, ...
Chemistry of Materials 28 (4), 1058-1065, 2016
|Operando soft X-ray emission spectroscopy of iron phthalocyanine-based oxygen reduction catalysts|
H Niwa, H Kiuchi, J Miyawaki, Y Harada, M Oshima, Y Nabae, T Aoki
Electrochemistry Communications 35, 57-60, 2013
|Role of residual transition-metal atoms in oxygen reduction reaction in cobalt phthalocyanine-based carbon cathode catalysts for polymer electrolyte fuel cell|
M Kobayashi, H Niwa, Y Harada, K Horiba, M Oshima, H Ofuchi, ...
Journal of Power Sources 196 (20), 8346-8351, 2011
|Pt-free carbon-based fuel cell catalyst prepared from spherical polyimide for enhanced oxygen diffusion|
Y Nabae, S Nagata, T Hayakawa, H Niwa, Y Harada, M Oshima, A Isoda, ...
Scientific reports 6, 23276, 2016
|Electron-Phonon Coupling in the Bulk of Anatase Measured by Resonant Inelastic X-Ray Spectroscopy|
S Moser, S Fatale, P Krüger, H Berger, P Bugnon, A Magrez, H Niwa, ...
Physical review letters 115 (9), 096404, 2015
|Enhancement in kinetics of the oxygen reduction reaction on a nitrogen-doped carbon catalyst by introduction of iron via electrochemical methods|
J Wu, D Zhang, H Niwa, Y Harada, M Oshima, H Ofuchi, Y Nabae, ...
Langmuir 31 (19), 5529-5536, 2015
|Operando soft x-ray emission spectroscopy of LiMn2O4 thin film involving Li–ion extraction/insertion reaction|
D Asakura, E Hosono, H Niwa, H Kiuchi, J Miyawaki, Y Nanba, M Okubo, ...
Electrochemistry Communications 50, 93-96, 2015
|Probing carbon edge exposure of iron phthalocyanine-based oxygen reduction catalysts by soft X-ray absorption spectroscopy|
H Niwa, M Saito, M Kobayashi, Y Harada, M Oshima, S Moriya, ...
Journal of Power Sources 223, 30-35, 2013
|Co oxidation accompanied by degradation of Pt–Co alloy cathode catalysts in polymer electrolyte fuel cells|
M Kobayashi, S Hidai, H Niwa, Y Harada, M Oshima, Y Horikawa, ...
Physical Chemistry Chemical Physics 11 (37), 8226-8230, 2009
|Probing the OH stretch in different local environments in liquid water|
Y Harada, J Miyawaki, H Niwa, K Yamazoe, LGM Pettersson, A Nilsson
The journal of physical chemistry letters 8 (22), 5487-5491, 2017
|Changes in electronic states of platinum–cobalt alloy catalyst for polymer electrolyte fuel cells by potential cycling|
S Hidai, M Kobayashi, H Niwa, Y Harada, M Oshima, Y Nakamori, T Aoki
Journal of Power Sources 196 (20), 8340-8345, 2011
|Distinguishing between high-and low-spin states for divalent Mn in Mn-based Prussian blue analogue by high-resolution soft X-ray emission spectroscopy|
D Asakura, Y Nanba, M Okubo, Y Mizuno, H Niwa, M Oshima, H Zhou, ...
The journal of physical chemistry letters 5 (22), 4008-4013, 2014
|Study on the oxygen adsorption property of nitrogen-containing metal-free carbon-based cathode catalysts for oxygen reduction reaction|
H Kiuchi, H Niwa, M Kobayashi, Y Harada, M Oshima, M Chokai, Y Nabae, ...
Electrochimica Acta 82, 291-295, 2012
|Characterization of nitrogen species incorporated into graphite using low energy nitrogen ion sputtering|
H Kiuchi, T Kondo, M Sakurai, D Guo, J Nakamura, H Niwa, J Miyawaki, ...
Physical Chemistry Chemical Physics 18 (1), 458-465, 2016