Kyoto University · 공학
Hiroaki Konishi 교수의 연구실은 주로 고성능 에너지 저장 소자, 특히 플루오르화물 셔틀 배터리(F- Shuttle Battery)와 나노복합재료 기반 리튬이온 배터리의 개발을 핵심 연구 분야로 삼고 있습니다. BiF₃ 기반 전극의 전기화학적 성능 향상과 고체-유체 전환 반응 메커니즘을 이해하기 위해 전해질 설계, 나노구조 제어, 전도성 재료와의 복합화 기술을 응용합니다. 또한 식물성 기름의 고도화를 위한 고선택성 이스트리피케이션 반응을 통해 식용지 기반 기초유지의 산화 안정성 향상에도 기여하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
To expand the applications of secondary batteries, we have developed a new reserve-type fluoride shuttle battery (FSB) as a promising next-generation secondary battery candidate. For a FSB, a metal fluoride and an organic solvent are applied as the active material and electrolyte, respectively, and the dissolution and deposition of the active material facilitate the electrochemical reaction. In the present study, a new electrolyte for FSBs was developed and used to investigate the electrochemica
For liquid-based fluoride shuttle batteries, electrolyte composed of organic solvent and supporting electrolyte salt is developed.To increase the solubility of supporting electrolyte salt in organic solvent, anion acceptors (triphenylboroxine or triphenylborane) are added.The addition of anion acceptor greatly increases the solubility of supporting electrolyte salt, and discharge-charge reaction of BiF3 electrode is confirmed in the prepared electrolytes.
Chemical interesterification reaction conditions that provide regioselectivity regarding fatty acid positions in triacylglycerol have been investigated. Sodium methoxide‐catalyzed ester interchange between soybean oil and methyl stearate was performed in hexane at low reaction temperature, i.e. , 30 to 60°C. The results showed regioselectivity was obtained at 30°C. The ester interchange at 1,3‐carbons progressed 1.7 times faster than at 2‐carbon of the glycerol moiety of triacylglycerol at 24 h.
Abstract Oxidative stability of products produced as potential margarine basestock from soybean oil and methyl stearate by a novel chemical regioselective interesterification was evaluated. The oxidative stability of the products was evaluated by peroxide formation and volatile analysis during storage in the dark with oxygen at 60°C for 72 h. The product obtained by regioselective interesterification resulted in the lowest peroxide formation and volatile concentration sample in comparison with s
Abstract We previously developed a fluoride shuttle battery containing a bismuth(III) fluoride (BiF 3 ) electrode; however, the battery exhibited several drawbacks including poor cycling performance and low practical capacity. In this research, to obtain a BiF 3 electrode with high cycling performance and practical capacity, an electrolyte containing triphenylboroxine as an anion acceptor was used, as previously reported. Moreover, BiF 3 was pulverized and adhered with conductive material using
