Publication - Hirofumi Sumi's Homepage (鷲見裕史)

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My ORCID number is 0000-0002-8439-0127.
https://orcid.org/0000-0002-8439-0127
My ResearcherID (Web of Science) is B-5403-2012.
https://www.webofscience.com/wos/author/record/253567
The list is automatically made in Google Scholar.
https://scholar.google.co.jp/citations?user=IOVCJBoAAAAJ

First Author & Corresponding Author (Hirofumi Sumi)

2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2006 2005 2004 2003 2001

2025

41) H. Sumi, K. Watanabe, A. Sharma, M. Fujioka, H. Shimada, Y. Mizutani, M. S. Alam and I. Kagomiya, "Oxygen Reduction Kinetics of High Performance BaCo_0.4Fe_0.4M_0.1Y_0.1O_3-δ (M = Mg, Zr) Positrode for Protonic Ceramic Fuel Cells", Commun. Chem., 8 (2025) 71.
https://doi.org/10.1038/s42004-025-01468-4

2024

40) H. Sumi, K. Adachi and Y. Daiko, "Prevention of Morphological Change for (Ba,Sr)(Co,Fe)O₃ Cathodes by Incorporating (Ce,Gd)O₂ for Intermediate-temperature Solid Oxide Fuel Cells", Ceram. Int., 50 (2024) 40176-40180.
https://doi.org/10.1016/j.ceramint.2024.07.317
39) H. Sumi, "Co-electrolysis SOEC and Internal Reforming SOFC for Achieving a Carbon-neutral Society", RSC Sustain., 2 (2024) 1568-1579.
https://doi.org/10.1039/D4SU00095A

2023

38) H. Sumi, H. Shimada, K. Watanabe, Y. Yamaguchi, K. Nomura, Y. Mizutani, R. M. Matsuda, M. Mori, K. Yashiro, T. Araki and Y. Okuyama, "Investigation of Degradation Mechanisms by Overpotential Evaluation for Protonic Ceramic Fuel Cells", J. Power Sources, 582 (2023) 233528.
https://doi.org/10.1016/j.jpowsour.2023.233528
37) H. Sumi, H. Shimada, Y. Yamaguchi, K. Nomura and K. Sato, "Why Is the Performance Different between Small- and Large-scale SOFCs?", Electrochim. Acta, 443 (2023) 141965.
https://doi.org/10.1016/j.electacta.2023.141965
36) H. Sumi, H. Shimada, K. Watanabe, Y. Yamaguchi, K. Nomura, Y. Mizutani and Y. Okuyama, "External Current Dependence of Polarization Resistances for Reversible Solid Oxide and Protonic Ceramic Cells with Current Leakage", ACS Appl. Energy Mater., 6 (2023) 1853-1861.
https://doi.org/10.1021/acsaem.2c03733

aw) Y. Okuyama, K. Kasuga, M. Shimomura, Y. Mikami, K. Yamauchi, T. Kuroha and H. Sumi, "Analyzing Elementary Electrode Reactions for Protonic Ceramic Fuel Cells by Proton/deuteron Isotope Effect", J. Power Sources, 586 (2023) 233647.
https://doi.org/10.1016/j.jpowsour.2023.233647
av) H. Sumi, "Development of Internal Reforming SOFCs for Application to Mobility", Ceramics Japan, 58 (2023) 65-68.
https://member.ceramic.or.jp/journal/vol_no/58/02/58_02.html

2022

au) H. Sumi, "Analysis of Electrochemical Impedance by Distribution of Relaxation Time Method and Its Application", Denki Kagaku, 90 (2022) 279-284.
https://doi.org/10.5796/denkikagaku.22-TE0005

2021

35) H. Sumi, H. Shimada, Y. Yamaguchi, Y. Mizutani, Y. Okuyama and K. Amezawa, "Comparison of Electrochemical Impedance Spectra for Electrolyte-supported Solid Oxide Fuel Cells (SOFCs) and Protonic Ceramic Fuel Cells (PCFCs)", Sci. Rep., 11 (2021) 10622.
https://doi.org/10.1038/s41598-021-90211-9
34) H. Sumi, S. Takahashi, Y. Yamaguchi and H. Shimada, "Lanthanum-doped Ceria Interlayer between Electrolyte and Cathode for Solid Oxide Fuel Cells", J. Asian Ceram. Soc., 9 (2021) 609-616.
https://doi.org/10.1080/21870764.2021.1905254

2020

33) H. Sumi, H. Shimada, Y. Yamaguchi, T. Yamaguchi and Y. Fujishiro, "Degradation Evaluation by Distribution of Relaxation Times Analysis for Microtubular Solid Oxide Fuel Cells", Electrochim. Acta, 339 (2020) 135913.
https://doi.org/10.1016/j.electacta.2020.135913

at) S. Takahashi, H. Sumi and Y. Fujishiro, "Influence of Cation Interdiffusion on Electrical Properties of Doped Ceria/Lanthanum Silicate Composite", Ceram. Int., 46 (2020) 20423-20428.
https://doi.org/10.1016/j.ceramint.2020.05.134
as) S. Takahashi, H. Sumi and Y. Fujishiro, "Modification of Sinterability and Electrical Property by Bi₂O₃ Addition to La_9.333Si₆O₂₆ for Co-sintering with Gd_0.1Ce_0.9O_1.95", Inorg. Chem. Commun., 117 (2020) 107974.
https://doi.org/10.1016/j.inoche.2020.107974

2019

32) H. Sumi, E. Suda, M. Mori and A. Weber, "Infiltration of Lanthanum Doped Ceria into Nickel-Zirconia Anodes for Direct Butane Utilization in Solid Oxide Fuel Cells", J. Electrochem. Soc., 166 (2019) F301-F305.
https://doi.org/10.1149/2.0891904jes

ar) H. Sumi, S. Nakabayashi, T. Kawada, Y. Uchiyama, N. Uchiyama and K. Ichihara, "Demonstration of SOFC Power Sources for Drones (UAVs; Unmanned Aerial Vehicles)", ECS Trans., 91(1) (2019) 149-157.
https://doi.org/10.1149/09101.0149ecst
aq) S. Takahashi, H. Sumi and Y. Fujishiro, "Ceria/Lanthanum Silicate Bi-Layer Electrolytes for SOFC Operating at Intermediate Temperatures", ECS Trans., 91(1) (2019) 571-577.
https://doi.org/10.1149/09101.0571ecst
ap) S. Takahashi, H. Sumi and Y. Fujishiro, "Development of Co-sintering Process for Anode-supported Solid Oxide Fuel Cells with Gadolinia-doped Ceria/Lanthanum Silicate Bi-layer Electrolyte", Int. J. Hydrogen Energy, 44 (2019) 23377-23383.
https://doi.org/10.1016/j.ijhydene.2019.07.006

2018

ao) H. Wang, H. Sumi and S. A. Barnett, "Effect of High-temperature Ageing on (La,Sr)(Co,Fe)O_3-δ Cathodes in Microtubular Solid Oxide Fuel Cells", Solid State Ionics, 323 (2018) 85-91.
https://doi.org/10.1016/j.ssi.2018.05.019

2017

31) H. Sumi, T. Yamaguchi, H. Shimada, Y. Fujishiro and M. Awano, "Internal Partial Oxidation Reforming of Butane and Steam Reforming of Ethanol for Anode-supported Microtubular Solid Oxide Fuel Cells", Fuel Cells, 17 (2017) 875-881.
https://doi.org/10.1002/fuce.201700154
30) H. Sumi, "Valency Effects of Cation Dopant on Ultraphosphate Glass Electrolytes for Intermediate Temperature Fuel Cells", J. Ceram. Soc. Jpn., 125 (2017) 829-832.
https://doi.org/10.2109/jcersj2.17129
29) H. Sumi, T. Yamaguchi, H. Shimada, K. Hamamoto, T. Suzuki and S. A. Barnett, "Direct Butane Utilization on Ni-(Y₂O₃)_0.08(ZrO₂)_0.92-(Ce_0.9Gd_0.1)O_1.95 Composite Anode-supported Microtubular Solid Oxide Fuel Cells", Electrocatal., 8 (2017) 288-293.
https://doi.org/10.1007/s12678-017-0369-7
28) H. Sumi, H. Shimada, Y. Yamaguchi and T. Yamaguchi, "Metal-supported Microtubular Solid Oxide Fuel Cells with Ceria-based Electrolytes", J. Ceram. Soc. Jpn., 125 (2017) 208-212.
https://doi.org/10.2109/jcersj2.16221
27) H. Sumi, H. Shimada, Y. Yamaguchi and T. Yamaguchi, "Effect of Anode Thickness on Polarization Resistance for Metal-Supported Microtubular Solid Oxide Fuel Cells", J. Electrochem. Soc., 164 (2017) F243-F247.
https://doi.org/10.1149/2.0431704jes
26) H. Sumi, E. Suda and M. Mori, "Blocking Layer for Prevention of Current Leakage for Reversible Solid Oxide Fuel Cells and Electrolysis Cells with Ceria-based Electrolyte", Int. J. Hydrogen Energy, 42 (2017) 4449-4455.
https://doi.org/10.1016/j.ijhydene.2016.09.176

an) H. Sumi, Y. Yamaguchi, H. Shimada, Y. Fujishiro and M. Awano, "Development of a Portable SOFC System with Internal Partial Oxidation Reforming of Butane and Steam Reforming of Ethanol", ECS Trans., 80(9) (2017) 71-77.
https://doi.org/10.1149/08009.0071ecst
am) H. Sumi, "Development of Compact-High Power Fuel Cell System", Clean Energy, 26(8) (2017) 8-12.
http://www.nikko-pb.co.jp/products/detail.php?product_id=4120
al) H. Sumi, H. Shimada, Y. Yamaguchi and T. Yamaguchi, "Distribution of Relaxation Times Analysis for Optimization of Anode Thickness in Metal-Supported Microtubular Solid Oxide Fuel Cells", ECS Trans., 78(1) (2017) 2151-2157.
https://doi.org/10.1149/07801.2151ecst

2016

25) H. Sumi, H. Shimada, K. Sato and T. Hashida, "Estimation of Micro-size Defects in Electrolyte Thin-film by X-ray Stress Measurement for Anode-supported Solid Oxide Fuel Cells", Mech. Eng. J., 3 (2016) 16-00177.
https://doi.org/10.1299/mej.16-00177
24) H. Sumi, D. Kennouche, K. Yakal-Kremski, T. Suzuki, S. A. Barnett, D. J. Miller, T. Yamaguchi, K. Hamamoto and Y. Fujishiro, "Electrochemical and Microstructural Properties of Ni-(Y₂O₃)_0.08(ZrO₂)_0.92-(Ce_0.9Gd_0.1)O_1.95 Anode-supported Microtubular Solid Oxide Fuel Cells", Solid State Ionics, 285 (2016) 227-233.
https://doi.org/10.1016/j.ssi.2015.07.005

ak) H. Sumi, "Electrochemical Impedance and Distribution of Relaxation Times", J. Fuel Cell Technol., 16-1 (2016) 69-73.
https://www.fcdic.jp/pdf/kikanshi/VOL16-1.pdf

2015

23) H. Sumi, T. Ohshiro, M. Nakayama, T. Suzuki and Y. Fujishiro, "Prevention of Reaction between (Ba,Sr)(Co,Fe)O₃ Cathodes and Yttria-stabilized Zirconica Electrolytes for Intermediate-temperature Solid Oxide Fuel Cells", Electrochim. Acta, 184 (2015) 403-409.
https://doi.org/10.1016/j.electacta.2015.10.092
22) H. Sumi, Y. Nakano, Y. Fujishiro and T. Kasuga, "Proton Conduction of MO-P₂O₅ Glasses (M = Zn, Ba) Containing a Large Amount of Water", Solid State Sci., 45 (2015) 5-8.
https://doi.org/10.1016/j.solidstatesciences.2015.04.009
21) H. Sumi, T. Yamaguchi, T. Suzuki, H. Shimada, K. Hamamoto and Y. Fujishiro, "Direct Hydrocarbon Utilization in Microtubular Solid Oxide Fuel Cells", J. Ceram. Soc. Jpn., 123 (2015) 213-216.
https://doi.org/10.2109/jcersj2.123.213

aj) H. Sumi, H. Shimada, T. Yamaguchi, K. Hamamoto, T. Suzuki and Y. Fujishiro, "Development of Microtubular Solid Oxide Fuel Cells using Hydrocarbon Fuels", Advances in Solid Oxide Fuel Cells and Electronic Ceramics, Ceram. Eng. Sci. Proc., 36(3) (2015) 93-104.
https://doi.org/10.1002/9781119211501.ch10
ai) H. Sumi, "Development of Micro SOFC Power Generator", Petrotech, 38 (2015) 937-941.
https://sekiyu-gakkai.org/search/list.html#38-12
ah) H. Sumi, T. Yamaguchi, T. Suzuki, H. Shimada, K. Hamamoto and Y. Fujishiro, "Development of Ceria-Based Microtubular Solid Oxide Fuel Cells", ECS Trans., 69(16) (2015) 61-67.
https://doi.org/10.1149/06916.0061ecst
ag) H. Sumi, T. Yamaguchi, T. Suzuki, H. Shimada, K. Hamamoto and Y. Fujishiro, "Development of Micro Power Generator Using LPG-Fueled Microtubular Solid Oxide Fuel Cells", ECS Trans., 68(1) (2015) 201-208.
https://doi.org/10.1149/06801.0201ecst
af) H. Sumi, "Development of Direct LPG-fueled Handy SOFC System", Catalysts Catalysis, 57 (2015) 169-173.
https://catsj.jp/jnl/top?volume=57&issue=3

2014

20) H. Sumi, T. Yamaguchi, T. Suzuki, H. Shimada, K. Hamamoto and Y. Fujishiro, "Effects of Anode Microstructures on Durability of Microtubular Solid Oxide Fuel Cells during Internal Steam Reforming of Methane", Electrochem. Commun., 49 (2014) 34-37.
https://doi.org/10.1016/j.elecom.2014.10.006
19) H. Sumi, T. Yamaguchi, K. Hamamoto, T. Suzuki and Y. Fujishiro, "Electrochemical Analysis for Anode-supported Microtubular Solid Oxide Fuel Cells in Partial Reducing and Oxidizing Conditions", Solid State Ionics, 262 (2014) 407-410.
https://doi.org/10.1016/j.ssi.2014.01.012

ae) H. Sumi, T. Yamaguchi, K. Hamamoto, T. Suzuki and Y. Fujishiro, "Development of Portable SOFC System Using Microtubular Cells", ECS Trans., 56(1) (2014) 63-69.
https://doi.org/10.1149/05601.0063ecst

2013

18) H. Sumi, T. Yamaguchi, K. Hamamoto, T. Suzuki and Y. Fujishiro, "Effects of Anode Microstructure on Mechanical and Electrochemical Properties for Anode-Supported Microtubular Solid Oxide Fuel Cells", J. Am. Ceram. Soc., 96 (2013) 3584-3588.
https://doi.org/10.1111/jace.12603
17) H. Sumi, Y. Nakano, Y. Fujishiro and T. Kasuga, "Proton Conductivities and Structures of BaO-ZnO-P₂O₅ Glasses in the Ultraphosphate Region for Intermediate Temperature Fuel Cells", Int. J. Hydrogen Energy, 38 (2013) 15354-15360.
https://doi.org/10.1016/j.ijhydene.2013.09.087
16) H. Sumi, T. Yamaguchi, K. Hamamoto, T. Suzuki and Y. Fujishiro, "Experimental and Simulated Evaluations of Current Collection Losses in Anode-Supported Microtubular Solid Oxide Fuel Cells", J. Electrochem. Soc., 160 (2013) F1232-F1236.
https://doi.org/10.1149/2.031311jes
15) H. Sumi, T. Yamaguchi, K. Hamamoto, T. Suzuki and Y. Fujishiro, "High Performance of La_0.6Sr_0.4Co_0.2Fe_0.8O₃-Ce_0.9Gd_0.1O_1.95 Nanoparticulate Cathode for Intermediate Temperature Microtubular Solid Oxide Fuel Cells", J. Power Sources, 226 (2013) 354-358.
https://doi.org/10.1016/j.jpowsour.2012.11.015
14) H. Sumi, T. Yamaguchi, K. Hamamoto, T. Suzuki and Y. Fujishiro, "Effect of Operating Temperature on Durability for Direct Butane Utilization of Microtubular Solid Oxide Fuel Cells", Electrochemistry, 81 (2013) 86-91.
https://doi.org/10.5796/electrochemistry.81.86

ad) H. Sumi, T. Yamaguchi, K. Hamamoto, T. Suzuki and Y. Fujishiro, "Development of Microtubular SOFCs for Portable Power Sources", ECS Trans., 57(1) (2013) 133-140.
https://doi.org/10.1149/05701.0133ecst
ac) H. Sumi, T. Yamaguchi and Y. Fujishiro, "Development of Handy Fuel Cell System", Clean Energy, 22(7) (2013) 1-5.
http://www.nikko-pb.co.jp/products/detail.php?product_id=3039
ab) H. Sumi, Y. Fujishiro, T. Oine and T. Kasuga, "Correlation between Protonic Conductivity and Structure of Phosphate Glasses for Intermediate Temperature Fuel Cells", ECS Trans., 50(27) (2013) 187-191.
https://doi.org/10.1149/05027.0187ecst

2012

13) H. Sumi, T. Yamaguchi, K. Hamamoto, T. Suzuki and Y. Fujishiro, "Impact of Direct Butane Microtubular Solid Oxide Fuel Cells", J. Power Sources, 220 (2012) 74-78.
https://doi.org/10.1016/j.jpowsour.2012.07.106
12) H. Sumi, T. Yamaguchi, K. Hamamoto, T. Suzuki, Y. Fujishiro, T. Matsui and K. Eguchi, "AC Impedance Characteristics for Anode-supported Microtubular Solid Oxide Fuel Cells", Electrochim. Acta, 67 (2012) 159-165.
https://doi.org/10.1016/j.electacta.2012.02.021

2011

11) H. Sumi, P. Puengjinda, H. Muroyama, T. Matsui and K. Eguchi, "Effects of Crystal Structure of Yttria- and Scandia-stabilized Zirconia in Nickel-based SOFC Anodes on Carbon Deposition and Oxidation Behavior", J. Power Sources, 196 (2011) 6048-6054.
https://doi.org/10.1016/j.jpowsour.2011.03.092
10) H. Sumi, Y.-H. Lee, H. Muroyama, T. Matsui, M. Kamijo, S. Mimuro, M. Yamanaka, Y. Yakajima and K. Eguchi, "Effect of Carbon Deposition by Carbon Monoxide Disproportionation on Electrochemical Characteristics at Low Temperature Operation for Solid Oxide Fuel Cells", J. Power Sources, 196 (2011) 4451-4457.
https://doi.org/10.1016/j.jpowsour.2011.01.061

2010

9) H. Sumi, R. Kishida, J.-Y. Kim, H. Muroyama, T. Matsui and K. Eguchi, "Correlation between Microstructural and Electrochemical Characteristics during Redox Cycles for Ni-YSZ Anode of SOFCs", J. Electrochem. Soc., 157 (2010) B1747-B1752.
https://doi.org/10.1149/1.3491345
8) H. Sumi, Y.-H. Lee, H. Muroyama, T. Matsui and K. Eguchi, "Comparison Between Internal Steam and CO₂ Reforming of Methane for Ni-YSZ and Ni-ScSZ SOFC Anodes", J. Electrochem. Soc., 157 (2010) B1118-B1125.
https://doi.org/10.1149/1.3435320

2009

7) H. Sumi, K. Kurachi, T. Hiroyama, Y. Umeda, K. Oshima and H. Kakiuchi, "Evaluation of Water-warming Characteristics of an Integrated Adsorption Heat Pump with Zeolite Absorbent", Kagaku Kogaku Ronbunshu, 35 (2009) 312-317.
https://doi.org/10.1252/kakoronbunshu.35.312

2006

6) H. Sumi, K. Ukai, M. Yokoyama, Y. Mizutani, Y. Doi, Y. Akiniwa and K. Tanaka, "Changes of Internal Stress in Solid-Oxide Fuel Cell During Red-Ox Cycle Evaluated by In Situ Measurement With Synchrotron Radiation", ASME J. Fuel Cell Sci. Technol., 3 (2006) 68-74.
https://doi.org/10.1115/1.2134739

2005

5) H. Sumi, M. Mizutani, Y. Doi, Y. Akiniwa and K. Tanaka, "In-situ Measurement of Internal Stresses in Solid Oxide Fuel Cells during Thermal Cycling by Synchrotron Radiation", J. Soc. Mat. Sci. Jpn., 54 (2005) 440-446.
https://doi.org/10.2472/jsms.54.440
4) H. Sumi, M. Mizutani, M. Takahashi, M. Sakurai, M. Watanabe and Y. Abe, "Possibility of Non-humidified Operation for Fuel Cells using Electrolyte of Protonic Conductors of Phosphate Glasses with Sr-Ba-Pb Series", Electrochemistry, 73 (2005) 194-198.
https://doi.org/10.5796/electrochemistry.73.194

2004

3) H. Sumi, M. Mizutani, M. Takahashi, M. Hayashi, T. Iwamoto, M. Sakurai, M. Watanabe and Y. Abe, "Characteristics of Fuel Cells using Protonic Conductors of Phosphate Glasses as Electrolyte", Electrochemistry, 72 (2004) 633-636.
https://doi.org/10.5796/electrochemistry.72.633
2) H. Sumi, K. Ukai, Y. Mizutani, H. Mori, C-J Wen, H. Takahashi and O. Yamamoto, "Performance of Nickel-Scandia-Stabilized Zirconia Cermet Anodes for SOFCs in 3% H₂O-CH₄", Solid State Ionics, 174 (2004) 151-156.
https://doi.org/10.1016/j.ssi.2004.06.016

2003

aa) H. Sumi, K. Ukai, K. Hisada, Y. Mizutani and O. Yamamoto, "High Performance Cell Development Using Scandia Doped Zirconia Electrolyte for Low Temperature Operating", Proc. 8th Int. SOFC Symp., (2003) 995-1002.

2001

1) H. Sumi, M. Kato, Y. Nishino, S. Asano and U. Mizutani, "Electrical Resistivity Anomaly and Magnetic Properties of Heusler-type Fe₂VAl", J. Jpn. Inst. Metals, 65 (2001) 771-774.
https://doi.org/10.2320/jinstmet1952.65.9_771