Challenging of reducing electrolysis voltage by superimposing boiling on PEMWE - A thermodynamic coupling

K. Ito; K. Terabaru; H. Li; A. Inada; H. Nakajima

doi:10.1149/08008.1117ecst

Challenging of reducing electrolysis voltage by superimposing boiling on PEMWE - A thermodynamic coupling

K. Ito, K. Terabaru, H. Li, A. Inada, H. Nakajima

Hydrogen Utilization Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Citations (Scopus)

Abstract

This study challenges to decrease water electrolysis voltage by thermodynamic coupling between boiling and water electrolysis. Boiling, once a system to cause boiling is given, spontaneously advances and causes entropy generation. When boiling is superimposed on an electrode where electrochemical reaction of water electrolysis progress, the entropy generation by the boiling possibly accelerates the reaction of water electrolysis, leading to reduction of electrolysis voltage. To confirm this new concept, electrolysis voltage for a unit cell of PEMWE is measured in the region from 80°C to 120°C under a condition that cell pressure and electrolysis current are kept constant. The measurement results showed that the electrolysis voltage abruptly decrease as cell temperature crosses boiling point and then turn to increase at a few degree higher than the point. These features in the measurement were reproduced in the theoretical analysis based on a mathematical model considering the thermodynamic coupling.

Original language	English
Title of host publication	ECS Transactions
Editors	D. J. Jones, F. Buechi, K. E. Swider-Lyons, P. N. Pintauro, H. Uchida, T. J. Schmidt, B. S. Pivovar, H. A. Gasteiger, A. Z. Weber, P. A. Shirvanian, J. M. Fenton, T. F. Fuller, K. Shinohara, K. A. Perry, P. Strasser, C. Coutanceau, S. Mitsushima, R. A. Mantz, S. Narayan, V. Ramani, K. E. Ayers, Y.-T. Kim, H. Xu
Publisher	Electrochemical Society Inc.
Pages	1117-1125
Number of pages	9
Edition	8
ISBN (Electronic)	9781607688259
ISBN (Print)	9781623324773
DOIs	https://doi.org/10.1149/08008.1117ecst
Publication status	Published - 2017
Event	Symposium on Polymer Electrolyte Fuel Cells 17, PEFC 2017 - 232nd ECS Meeting - National Harbor, United States Duration: Oct 1 2017 → Oct 5 2017

Publication series

Name	ECS Transactions
Number	8
Volume	80
ISSN (Print)	1938-6737
ISSN (Electronic)	1938-5862

Other

Other	Symposium on Polymer Electrolyte Fuel Cells 17, PEFC 2017 - 232nd ECS Meeting
Country/Territory	United States
City	National Harbor
Period	10/1/17 → 10/5/17

All Science Journal Classification (ASJC) codes

Engineering(all)

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10.1149/08008.1117ecst

Cite this

Ito, K., Terabaru, K., Li, H., Inada, A., & Nakajima, H. (2017). Challenging of reducing electrolysis voltage by superimposing boiling on PEMWE - A thermodynamic coupling. In D. J. Jones, F. Buechi, K. E. Swider-Lyons, P. N. Pintauro, H. Uchida, T. J. Schmidt, B. S. Pivovar, H. A. Gasteiger, A. Z. Weber, P. A. Shirvanian, J. M. Fenton, T. F. Fuller, K. Shinohara, K. A. Perry, P. Strasser, C. Coutanceau, S. Mitsushima, R. A. Mantz, S. Narayan, V. Ramani, K. E. Ayers, Y-T. Kim, ... H. Xu (Eds.), ECS Transactions (8 ed., pp. 1117-1125). (ECS Transactions; Vol. 80, No. 8). Electrochemical Society Inc.. https://doi.org/10.1149/08008.1117ecst

Challenging of reducing electrolysis voltage by superimposing boiling on PEMWE - A thermodynamic coupling. / Ito, K.; Terabaru, K.; Li, H. et al.
ECS Transactions. ed. / D. J. Jones; F. Buechi; K. E. Swider-Lyons; P. N. Pintauro; H. Uchida; T. J. Schmidt; B. S. Pivovar; H. A. Gasteiger; A. Z. Weber; P. A. Shirvanian; J. M. Fenton; T. F. Fuller; K. Shinohara; K. A. Perry; P. Strasser; C. Coutanceau; S. Mitsushima; R. A. Mantz; S. Narayan; V. Ramani; K. E. Ayers; Y.-T. Kim; H. Xu. 8. ed. Electrochemical Society Inc., 2017. p. 1117-1125 (ECS Transactions; Vol. 80, No. 8).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Ito, K, Terabaru, K, Li, H, Inada, A & Nakajima, H 2017, Challenging of reducing electrolysis voltage by superimposing boiling on PEMWE - A thermodynamic coupling. in DJ Jones, F Buechi, KE Swider-Lyons, PN Pintauro, H Uchida, TJ Schmidt, BS Pivovar, HA Gasteiger, AZ Weber, PA Shirvanian, JM Fenton, TF Fuller, K Shinohara, KA Perry, P Strasser, C Coutanceau, S Mitsushima, RA Mantz, S Narayan, V Ramani, KE Ayers, Y-T Kim & H Xu (eds), ECS Transactions. 8 edn, ECS Transactions, no. 8, vol. 80, Electrochemical Society Inc., pp. 1117-1125, Symposium on Polymer Electrolyte Fuel Cells 17, PEFC 2017 - 232nd ECS Meeting, National Harbor, United States, 10/1/17. https://doi.org/10.1149/08008.1117ecst

Ito K, Terabaru K, Li H, Inada A, Nakajima H. Challenging of reducing electrolysis voltage by superimposing boiling on PEMWE - A thermodynamic coupling. In Jones DJ, Buechi F, Swider-Lyons KE, Pintauro PN, Uchida H, Schmidt TJ, Pivovar BS, Gasteiger HA, Weber AZ, Shirvanian PA, Fenton JM, Fuller TF, Shinohara K, Perry KA, Strasser P, Coutanceau C, Mitsushima S, Mantz RA, Narayan S, Ramani V, Ayers KE, Kim Y-T, Xu H, editors, ECS Transactions. 8 ed. Electrochemical Society Inc. 2017. p. 1117-1125. (ECS Transactions; 8). doi: 10.1149/08008.1117ecst

Ito, K. ; Terabaru, K. ; Li, H. et al. / Challenging of reducing electrolysis voltage by superimposing boiling on PEMWE - A thermodynamic coupling. ECS Transactions. editor / D. J. Jones ; F. Buechi ; K. E. Swider-Lyons ; P. N. Pintauro ; H. Uchida ; T. J. Schmidt ; B. S. Pivovar ; H. A. Gasteiger ; A. Z. Weber ; P. A. Shirvanian ; J. M. Fenton ; T. F. Fuller ; K. Shinohara ; K. A. Perry ; P. Strasser ; C. Coutanceau ; S. Mitsushima ; R. A. Mantz ; S. Narayan ; V. Ramani ; K. E. Ayers ; Y.-T. Kim ; H. Xu. 8. ed. Electrochemical Society Inc., 2017. pp. 1117-1125 (ECS Transactions; 8).

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abstract = "This study challenges to decrease water electrolysis voltage by thermodynamic coupling between boiling and water electrolysis. Boiling, once a system to cause boiling is given, spontaneously advances and causes entropy generation. When boiling is superimposed on an electrode where electrochemical reaction of water electrolysis progress, the entropy generation by the boiling possibly accelerates the reaction of water electrolysis, leading to reduction of electrolysis voltage. To confirm this new concept, electrolysis voltage for a unit cell of PEMWE is measured in the region from 80°C to 120°C under a condition that cell pressure and electrolysis current are kept constant. The measurement results showed that the electrolysis voltage abruptly decrease as cell temperature crosses boiling point and then turn to increase at a few degree higher than the point. These features in the measurement were reproduced in the theoretical analysis based on a mathematical model considering the thermodynamic coupling.",

author = "K. Ito and K. Terabaru and H. Li and A. Inada and H. Nakajima",

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AU - Ito, K.

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AU - Nakajima, H.

N1 - Publisher Copyright: © The Electrochemical Society.

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N2 - This study challenges to decrease water electrolysis voltage by thermodynamic coupling between boiling and water electrolysis. Boiling, once a system to cause boiling is given, spontaneously advances and causes entropy generation. When boiling is superimposed on an electrode where electrochemical reaction of water electrolysis progress, the entropy generation by the boiling possibly accelerates the reaction of water electrolysis, leading to reduction of electrolysis voltage. To confirm this new concept, electrolysis voltage for a unit cell of PEMWE is measured in the region from 80°C to 120°C under a condition that cell pressure and electrolysis current are kept constant. The measurement results showed that the electrolysis voltage abruptly decrease as cell temperature crosses boiling point and then turn to increase at a few degree higher than the point. These features in the measurement were reproduced in the theoretical analysis based on a mathematical model considering the thermodynamic coupling.

AB - This study challenges to decrease water electrolysis voltage by thermodynamic coupling between boiling and water electrolysis. Boiling, once a system to cause boiling is given, spontaneously advances and causes entropy generation. When boiling is superimposed on an electrode where electrochemical reaction of water electrolysis progress, the entropy generation by the boiling possibly accelerates the reaction of water electrolysis, leading to reduction of electrolysis voltage. To confirm this new concept, electrolysis voltage for a unit cell of PEMWE is measured in the region from 80°C to 120°C under a condition that cell pressure and electrolysis current are kept constant. The measurement results showed that the electrolysis voltage abruptly decrease as cell temperature crosses boiling point and then turn to increase at a few degree higher than the point. These features in the measurement were reproduced in the theoretical analysis based on a mathematical model considering the thermodynamic coupling.

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Challenging of reducing electrolysis voltage by superimposing boiling on PEMWE - A thermodynamic coupling

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