Hideharu Niwa
Hideharu Niwa
Faculty of Pure and Applied Sciences, University of Tsukuba
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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
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), 2012
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
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
Redox Potential Paradox in NaxMO2 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
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
Lewis Basicity of Nitrogen-Doped Graphite Observed by CO2 Chemisorption
H Kiuchi, R Shibuya, T Kondo, J Nakamura, H Niwa, J Miyawaki, M Kawai, ...
Nanoscale Research Letters 11, 1-7, 2016
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
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 (1), 23276, 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
Dzyaloshinskii-Moriya interaction in measured by magnetic circular dichroism in resonant inelastic soft x-ray scattering
J Miyawaki, S Suga, H Fujiwara, M Urasaki, H Ikeno, H Niwa, H Kiuchi, ...
Physical Review B 96 (21), 214420, 2017
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
Observation of momentum-dependent charge excitations in hole-doped cuprates using resonant inelastic x-ray scattering at the oxygen edge
K Ishii, T Tohyama, S Asano, K Sato, M Fujita, S Wakimoto, K Tustsui, ...
Physical Review B 96 (11), 115148, 2017
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
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
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
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
Prussian blue analogues as promising thermal power generation materials
Y Fukuzumi, K Amaha, W Kobayashi, H Niwa, Y Mortitomo
Energy Technology 6 (10), 1865-1870, 2018
Invariant nature of substituted element in metal-hexacyanoferrate
H Niwa, W Kobayashi, T Shibata, H Nitani, Y Moritomo
Scientific reports 7 (1), 13225, 2017
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