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Bismuth chloride@mesocellular carbon foam nanocomposite cathode materials for rechargeable chloride ion batteries

Chinese Chemical Letters 2022年第4期33卷 2200-2204页

作者： Chang Zhang Shijiao Sun Meifen Wu Xiangyu Zhao College of Materials Science and Engineering Nanjing Tech UniversityNanjing 211816China CAS Key Laboratory of Materials for Energy Conversion Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China Jiangsu Collaborative Innovation Center for Advanced Inorganic Functional Composites Nanjing Tech UniversityNanjing 211816China

chloride ion batteries(CIB) are considered to be one of the most promising energy storage devices. As cathode materials for CIBs, metal chlorides have many advantages, such as high theoretical energy density, abundant elemental resources and ideal discharge voltage plateau. However, the dissolution and huge volume change of metal chlorides during cycling lead to considerable short lifespan, which limits their potential application for CIBs. Herein, the Bismuth chloride nanocrystal is confined in mesocellular carbon foam matrix by a new vacuum impregnation approach. The mesocellular carbon foam with large interconnected pores(15.7 or 23.2 nm) may buffer the large volume variation of Bismuth chloride during charge and discharge, giving rise to significantly enhanced electrochemical performance. The as-prepared Bismuth chloride@mesocellular carbon foam cathode delivered an initial discharge capacity of 298 m Ah/g and a reversible capacity of 91 m Ah/g after 60 cycles. In contrast, the pure Bismuth chloride cathode almost cannot discharge after 30 cycles. This is the first report that the metal chloride cathode can achieve a prolonged cycling in CIBs.

关键词： chloride ion batteries Cathode materials Bismuth chloride Mesocellular carbon foam Electrochemistry

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bismuth (III) chloride Catalyzed Multicomponent Synthesis of Substituted Hexahydroimidazo[1, 2-<i>a</i>]Pyridines

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Green and Sustainable Chemistry 2021年第3期11卷 89-95页

作者： Noah T. Haskin Richard A. Guingrich Allison J. Schrader Matthew R. Crosse Alpa Y. Dave Eeshwaraiah Begari Ram S. Mohan Laboratory for Environmentally Friendly Organic Synthesis Department of Chemistry Illinois Wesleyan University Bloomington IL USA Centre for Applied Chemistry School of Applied Material Sciences Central University of Gujarat Gandhinagar India

The synthesis of nitrogen containing heterocycles is of particular interest in the pharmaceutical industry due to the range of biological activities exhibited by such compounds. Their synthesis using multicomponent reactions saves steps and minimizes waste generation. The bismuth (III) chloride multicomponent synthesis of a series of hexahydroimidazo[1, 2-a]pyridines is reported. Bismuth (III) compounds are especially attractive from a green chemistry perspective because they are remarkably nontoxic, non-corrosive and relatively inexpensive. The reported method avoids chromatography and an aqueous waste stream to afford the products in a very mass efficient manner.

关键词： Bismuth chloride Green Chemistry Heterocycles Multicomponent Reactions

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