成果 | ナノプロトニクス燃料電池の創成

成果

2014

[18] Proton conductivity enhancement in oriented, sulfonated polyimide thin ﬁlms
K. Krishnan, H. Iwatsuki, M. Hara, S. Nagano, Y. Nagao
Journal of Materials Chemistry A, 2014, accepted
DOI: 10.1039/c4ta00579a

[17] Effects of Nafion impregnation using inkjet printing for membrane electrode assemblies in polymer electrolyte membrane fuel cells
Z. Wang, Y. Nagao
Electrochimica Acta, 2014, accepted
DOI: 10.1016/j.electacta.2014.02.133

2013

[16] Enhancement of Proton Transport in an Oriented Polypeptide Thin Film
Y. Nagao, J. Matsui, T. Abe, H. Hiramatsu, H. Yamamoto, T. Miyashita, N. Sata, H. Yugami
Langmuir, 2013, 29, 6798 - 6804
DOI: 10.1021/la400412f

配向膜化によりプロトン輸送特性が向上

[15] Substrate dependence of the proton transport and oriented structure in oligo[(1,2propanediamine)-alt-(oxalic acid)] thin films
Y. Nagao
Chemistry Letters, 2013, 42, 468 - 470
DOI: 10.1246/cl.130019

(Editor's choice)
薄膜内プロトン輸送が基板の種類に依存することを明らかに

[14] Highly Oriented Sulfonic Acid Groups in a Nafion Thin Film on Si Substrate
Y. Nagao
The Journal of Physical Chemistry C, 2013, accepted
DOI: 10.1021/jp311622p

Nafion薄膜のプロトン輸送能低下の起源を解明

2012

[13] A study on the plasma-treated surfaces of MgO(100) and quartz substrates by infrared multiple-angle incidence resolution spectrometry
Y. Nagao
e-Journal of Surface Science and Nanotechnology, 2012, 10, 229 - 233
DOI: 10.1380/ejssnt.2012.229

p-MAIRSによる基板洗浄後の表面汚れの同定とプラズマ洗浄の有効性

[12] Proton transport property of Nafion thin films on MgO(100) with anisotropic molecular structure
Y. Nagao
e-Journal of Surface Science and Nanotechnology, 2012, 10, 114 - 116
DOI: 10.1380/ejssnt.2012.114

Nafion薄膜のプロトン伝導性低下の起源を解明

2011

[11] Photocurable Electrolyte Based on Sulfonated Poly(ether ether ketone)
Y. Nagao*, T. Iwadera, N. Sata, F. Iguchi, H. Yugami
Solid State Ionics, 2011, 204-205, 35 - 40
DOI: 10.1016/j.ssi.2011.09.013

高プロトン伝導性高分子SPEEKの光機能化に関する研究

[10] Catalytic activity of carbon-supported iridium oxide for oxygen reduction reaction as a Pt-free catalyst in polymer electrolyte fuel cell
C. H. Chang, T. S. Yuen, Y. Nagao*, H. Yugami
Solid State Ionics, 2011, 197, 1, 49 - 51
DOI: 10.1016/j.ssi.2011.06.015

酸化物ナノ粒子における電気化学的酸素還元特性

[9] Proton transport properties of poly(aspartic acid) with different average molecular weight
Y. Nagao*, Y. Imai, J. Matsui, T. Ogawa, T. Miyashita
The Journal of Chemical Thermodynamics, 2011, 43, 613
DOI: 10.1016/j.jct.2010.11.016

分子量の異なるポリアスパラギン酸におけるプロトン輸送特性

[8] Proton concentration in 15mol% Y-doped BaZrO3 proton conductors prepared at various temperatures
F. Iguchi, Y. Nagao, N. Sata, H. Yugami
Solid State Ionics, 2011, 192, 97 - 100
DOI: 10.1016/j.ssi.2010.05.046

2010

[7] Electrocatalytic activity of Iridium Oxide nanoparticles coated on carbon for oxygen reduction as cathode catalyst in PEFC
C. H. Chang, T. S. Yuen, Y. Nagao*, H. Yugami
Journal of Power Sources, 2010, 195, 5938
DOI: 10.1016/j.jpowsour.2010.01.049

酸化物ナノ粒子における電気化学的酸素還元特性（カソード）

[6] Electronic Structure of Sr-doped LaScO3 Single Crystal Annealed in Different Atmospheres
Y. Nagao*, J. Liu, F. Iguchi, T. Higuchi, N. Sata, H. Yugami
Japanese Journal of Applied Physics, 2010, 49, 010208,
DOI: 10.1143/JJAP.49.010208

軟X線吸収分光法(KEK-PF BL-19B)によるバンドギャップ近傍の電子状態変化

[5] Synthesis and Proton transport property of Poly(aspartic acid) thin film on SiO2 substrate
Y. Nagao*, F. Iguchi, N. Sata, H. Yugami
Solid State Ionics, 2010, 181, 207
DOI: 10.1016/j.ssi.2009.03.011

薄膜にするだけでプロトン輸送特性が飛躍的に向上する現象

2009

[4] The relationship between chemical composition distributions and specific grain boundary conductivity in Y-doped BaZrO3 proton conductors
F. Iguchi, T. Tsurui, N. Sata, Y. Nagao, H. Yugami
Solid State Ionics, 2009, 180, 563 - 568
DOI: 10.1016/j.ssi.2008.12.006

[3] Synthesis of oligomeric poly[(1, 2-propanediamine)-alt-(oxalic acid)] and anomalous proton conductivities of the thin films
Y. Nagao*, N. Naito, F. Iguchi, N. Sata, H. Yugami
Solid State Ionics, 2009, 180, 589 - 591
DOI: 10.1016/j.ssi.2008.09.022

[2] Proton conductivity of oligomeric poly[(1, 2-propane-diamine)-alt-(oxalic acid)] thin films on Al2O3
Y. Nagao*, N. Naito, F. Iguchi, N. Sata, H. Yugami
e-Journal of Surface Science and Nanotechnology, 2009, 7, 530 - 532
DOI: 10.1380/ejssnt.2009.530

[1] Synthesis and Proton Transport Property of Poly(aspartic acid) Thin Film on MgO(100) Substrate
Y. Nagao*, M. Ando, H. Maekawa, C. H. Chang, F. Iguchi, N. Sata
ECS Transactions, 2009, 16, 401 - 406
DOI: 10.1149/1.3242254