著者

Toshiaki INA Yuki ORIKASA Titus MASESE Takayuki NAKAO Atsushi MINESHIGE Koji AMEZAWA Hajime TANIDA Tomoya URUGA Yoshiharu UCHIMOTO

出版者

The Electrochemical Society of Japan

雑誌

Electrochemistry (ISSN:13443542)

巻号頁・発行日

vol.82, no.10, pp.875-879, 2014-10-05 (Released:2014-10-05)

参考文献数

41

被引用文献数

4

---

The relationship between the local structure and oxide ionic conduction of Nd2NiO4+δ possessing the K2NiF4 structure was investigated. Various oxygen nonstoichiometry samples of Nd2NiO4+δ prepared with different annealing oxygen partial pressures were examined. The local structure related to oxide ionic conduction was determined by the Nd K-edge extended X-ray absorption fine structure. The oxide ionic conductivity and surface exchange coefficient were estimated using electronic conductivity relaxation methods. The activation energy for the oxide ionic conductivity was found to have a direct correlation to the surface exchange coefficient. The bottleneck size for oxide ion conduction was strongly correlated to the oxide ionic conduction of interstitial oxygen and the oxygen surface exchange rate.

著者

北村 房男

出版者

公益社団法人 電気化学会

雑誌

Electrochemistry (ISSN:13443542)

巻号頁・発行日

vol.68, no.1, pp.63-68, 2000-01-05 (Released:2020-01-10)

参考文献数

9

被引用文献数

2

著者

門間 聰之

出版者

公益社団法人 電気化学会

雑誌

Electrochemistry (ISSN:13443542)

巻号頁・発行日

vol.78, no.12, pp.1004-1007, 2010-12-05 (Released:2012-03-26)

参考文献数

4

著者

Katsuhito TAKEI Nobuyuki SERIZAWA Tokujiro NISHIKIORI Yasuhiko ITO

出版者

The Electrochemical Society of Japan

雑誌

Electrochemistry (ISSN:13443542)

巻号頁・発行日

vol.86, no.2, pp.35-37, 2018-03-05 (Released:2018-03-05)

参考文献数

12

---

The cathodic reduction of nitrogen (N2) gas in molten chloride was investigated using a porous nickel (Ni) electrode. A LiCl-KCl-CsCl melt containing cathodically formed nitride ion (N3−) was sampled from an electrolytic bath and analyzed quantitatively by ion chromatography. The current efficiency of the cathodic reaction calculated from the ratio of quantity of the produced N3− was approximately 78% on average. The main reason why the measured efficiency did not reach 100% is considered as the amount of N3− increased more in the pores of the gas electrode than in the bulk of the electrolytic bath.

著者

Masaki YAMAGATA Kohei TANAKA Yoshihiro TSURUDA Yoshitsugu SONE Seisuke FUKUDA Shinichi NAKASUKA Michiyuki KONO Masashi ISHIKAWA

出版者

公益社団法人 電気化学会

雑誌

Electrochemistry (ISSN:13443542)

巻号頁・発行日

vol.83, no.10, pp.918-924, 2015-10-05 (Released:2015-10-05)

参考文献数

51

被引用文献数

4 35

---

A prototype lithium-ion battery with a bis(fluorosulfonyl)imide (FSI)-based ionic liquid electrolyte was developed. The prototype was mounted on a demonstration module of the “Hodoyoshi-3” microsatellite, which was successfully launched on June 20, 2014. Qualification tests for space application, including radiation tolerance and vacuum tests, revealed negligible degradation of the ionic liquid-based lithium-ion battery (IL-LIB) cell. According to the flight data, the IL-LIB cell can exist stably in an ultra-high vacuum environment despite its thin and flexible pouch casing without any rigid anti-vacuum reinforcements. Furthermore, the power unit showed the same charge–discharge performance as that predicted by the charge–discharge behavior of an identical cell on the ground, suggesting that the IL-LIB cell maintains performance in high vacuum a microgravity environment. These results prove that LIB cells with FSI-based ionic liquids can be used as a power source for space applications.

著者

垣内 隆

出版者

公益社団法人 電気化学会

雑誌

Electrochemistry (ISSN:13443542)

巻号頁・発行日

vol.81, no.11, pp.932-936, 2013-11-05 (Released:2013-11-05)

参考文献数

10

被引用文献数

3 2

著者

清野 美勝

出版者

The Electrochemical Society of Japan

雑誌

Electrochemistry (ISSN:13443542)

巻号頁・発行日

vol.83, no.7, pp.576-577, 2015-07-05 (Released:2015-07-05)

著者

出来 成人

出版者

公益社団法人 電気化学会

雑誌

Electrochemistry (ISSN:13443542)

巻号頁・発行日

vol.73, no.7, pp.477, 2005-07-05 (Released:2019-06-01)

著者

Ryosuke NAKAZATO Keeko MATSUMOTO Noboru YAMAGUCHI Margherita CAVALLO Valentina CROCELLÀ Francesca BONINO Matthias QUINTELIER Joke HADERMANN Nataly Carolina ROSERO-NAVARRO Akira MIURA Kiyoharu TADANAGA

出版者

The Electrochemical Society of Japan

雑誌

Electrochemistry (ISSN:13443542)

巻号頁・発行日

vol.91, no.9, pp.097003, 2023-09-26 (Released:2023-09-26)

参考文献数

49

被引用文献数

2

---

Carbon dioxide electrochemical reduction (CO2ER) has attracted considerable attention as a technology to recycle CO2 into raw materials for chemicals using renewable energies. We recently found that Zn-Al layered double hydroxides (Zn-Al LDH) have the CO-forming CO2ER activity. However, the activity was only evaluated by using the liquid-phase CO2ER. In this study, Ni-Al and Ni-Fe LDHs as well as Zn-Al LDH were synthesized using a facile coprecipitation process and the gas-phase CO2ER with the LDH-loaded gas-diffusion electrode (GDE) was examined. The products were characterized by XRD, STEM-EDX, BF-TEM and ATR-IR spectroscopy. In the ATR-IR results, the interaction of CO2 with Zn-Al LDH showed a different carbonates evolution with respect to other LDHs, suggesting a different electrocatalytic activity. The LDH-loaded GDE was prepared by simple drop-casting of a catalyst ink onto carbon paper. For gas-phase CO2ER, only Zn-Al LDH exhibited the CO2ER activity for carbon monoxide (CO) formation. By using different potassium salt electrolytes affording neutral to strongly basic conditions, such as KCl, KHCO3 and KOH, the gas-phase CO2ER with Zn-Al LDH-loaded GDE showed 1.3 to 2.1 times higher partial current density for CO formation than the liquid-phase CO2ER.

著者

落合 剛 藤嶋 昭

出版者

公益社団法人 電気化学会

雑誌

Electrochemistry (ISSN:13443542)

巻号頁・発行日

vol.81, no.11, pp.924-927, 2013-11-05 (Released:2013-11-05)

参考文献数

22

著者

Ryo SAKAMOTO Nobuaki SHIRAI Liwei ZHAO Atsushi INOISHI Hikari SAKAEBE Shigeto OKADA

出版者

The Electrochemical Society of Japan

雑誌

Electrochemistry (ISSN:13443542)

巻号頁・発行日

pp.23-00041, (Released:2023-06-08)

被引用文献数

2

著者

Kentaro YAMAMOTO

出版者

The Electrochemical Society of Japan

雑誌

Electrochemistry (ISSN:13443542)

巻号頁・発行日

pp.23-00032, (Released:2023-04-26)

参考文献数

36

被引用文献数

1

---

Electrode reactions in electrochemical devices often consist of charge transfer at electrode/electrolyte interface and charge compensation in electrode active material. Therefore, to design electrochemical devices with high electrochemical performance, it is important to understand electronic structures of the electrode/electrolyte interface and electrode bulk during electrochemical reactions, and to design electrode materials to control them. In this paper, certain phenomena at the electrode/electrolyte interface and electrode bulk in lithium-ion batteries are clarified by using synchrotron radiation X-ray analyses. The information obtained from those X-ray analyses are applied to control the structure of the electrode/electrolyte interface and electrode bulk. Moreover, new cathode materials for all-solid-state fluoride-ion with high power and cyclic performances have been developed, compared to simple metal/metal fluoride materials, by using the findings obtained from the synchrotron radiation X-ray analyses.

著者

Hisashi KATO Fumitada IGUCHI Hiroo YUGAMI

出版者

The Electrochemical Society of Japan

雑誌

Electrochemistry (ISSN:13443542)

巻号頁・発行日

vol.82, no.10, pp.845-850, 2014-10-05 (Released:2014-10-05)

参考文献数

24

被引用文献数

4 6

---

Sr2+, Al3+-doped LaScO3 perovskite-type oxide (La0.675Sr0.325Sc0.99Al0.01O3; LSSA), which exhibits high conductivity of both oxide-ion and proton, is expected to become an electrolyte material for high-temperature solid oxide fuel cells (SOFCs). Considering the potential of this material to serve as a solid electrolyte, its chemical compatibility with some of the typical fuel electrodes commonly used in SOFCs was investigated. Severe elemental diffusion was found at the sintering temperature of 1673 K between doped LaScO3 and the anode material, mainly due to strontium migration. To control the elemental diffusion, we lowered the sintering temperature to 1523 K. In the case of Ni-SDC, we found no elemental diffusion at the electrolyte/electrode interface. Moreover, we tried to fabricate SOFC consisting of LSSA electrolyte and some electrodes, and we performed power generation tests above 1073 K. At 1273 K, the maximum power density was 158 mW cm−2 as humidified hydrogen fuel. The electrolyte resistance was high due to the high thickness of 0.6–0.9 mm. Higher power density would seem possible if a thinner electrolyte is applied. Consequently, we found that LSSA is applicable as an electrolyte material for SOFCs.

著者

平本 抽

出版者

公益社団法人 電気化学会

雑誌

Electrochemistry (ISSN:13443542)

巻号頁・発行日

vol.73, no.2, pp.160-163, 2005-02-05 (Released:2019-06-01)

参考文献数

4

被引用文献数

2 2

著者

Naruhisa TSUKASE Konosuke WATANABE Takuto ARAKI Kensaku NAGASAWA Shigenori MITSUSHIMA

出版者

The Electrochemical Society of Japan

雑誌

Electrochemistry (ISSN:13443542)

巻号頁・発行日

vol.90, no.12, pp.127002, 2022-12-14 (Released:2022-12-14)

参考文献数

25

被引用文献数

1

---

Polymer electrolyte membrane (PEM) water electrolysis has received significant attention as a suitable technology for hydrogen production because it can operate at a high current density, is compact, and can produce high purity hydrogen. However, this process involves high costs because precious metal catalysts are required to maintain high performance. To overcome this challenge and develop new materials to replace precious metals, the complex overlapping overpotentials must be considered separately. In a previous study, a structure that uses double reference electrodes by shifting the electrode arrangement was proposed for separating the overpotentials. This structure allows the electrolyte surface potential to be measured by a reference electrode far from the electrode by changing the potential distribution. However, the structure may cause a complicated three-dimensional potential distribution, which may adversely affects accurate measurement of the electrode potential. Therefore, the potential distribution was analyzed and evaluated using three-dimensional multiphysics simulations incorporating proton and electron conduction. As a result, a remarkable phenomenon called potential wraparound, which affects the distribution of electric potential, was observed. Furthermore, a significant finding was that this effect can be suppressed by changing the shape of the electrode.

著者

石川 雄一

出版者

公益社団法人 電気化学会

雑誌

Electrochemistry (ISSN:13443542)

巻号頁・発行日

vol.73, no.2, pp.150-155, 2005-02-05 (Released:2019-06-01)

参考文献数

10

被引用文献数

1 3

著者

藤嶋 昭

出版者

公益社団法人 電気化学会

雑誌

Electrochemistry (ISSN:13443542)

巻号頁・発行日

vol.71, no.7, pp.568-569, 2003-07-05 (Released:2019-08-30)

参考文献数

6

著者

辻村 浩行 伊藤 靖彦

出版者

The Electrochemical Society of Japan

雑誌

Electrochemistry (ISSN:13443542)

巻号頁・発行日

vol.84, no.4, pp.263-268, 2016-04-05 (Released:2016-04-05)

参考文献数

15

被引用文献数

4

著者

山本 雅博

出版者

公益社団法人 電気化学会

雑誌

Electrochemistry (ISSN:13443542)

巻号頁・発行日

vol.80, no.11, pp.925-931, 2012-11-05 (Released:2012-11-05)

参考文献数

22

被引用文献数

1

著者

Kota MOTOHASHI Takanori SANADA Takashi NAKAMURA Yuta KIMURA Yoshiharu UCHIMOTO Koji AMEZAWA

出版者

The Electrochemical Society of Japan

雑誌

Electrochemistry (ISSN:13443542)

巻号頁・発行日

pp.22-00114, (Released:2022-10-27)

被引用文献数

1