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

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.

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

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.

The efficient synthesis of 14-alkyl or aryl 14H-dibenzo[a,j] xanthenes catalyzed by bismuth(Ⅲ)chloride under solvent-free conditions

An efficient method for the synthesis of 14-alkyl or aryl 14H-dibenzo[a,j]xanthene derivatives by the reaction of β-naphthol,and aldehydes in the presence of a catalytic amount of bismuth（Ⅲ） chloride（BiCl_3） under solvent-free conditions at 110℃is described.Aliphatic and aromatic aldehydes were used in the reaction and in all cases the desired products were synthesized successfully.This reaction was studied under different temperatures;the maximum yield was obtained in a short reaction period at 110℃.The method offers the advantages of high yields,short reaction times,simplicity and easy workup compared to the conventional method of syntheses.

Sm/BiCl_3 System Mediated Reformatsky Type Reactions of α-Bromoacetophenone with Aldehydes in THF-H_2O Solvent

In the presence of samarium-bismuth(III) chloride, inter-molecular aldol typereactions of α-bromoacetophenone with various aldehydes in tetrahydrofuran-water mixed solventafford β-hydroxy ketones in moderate to good yields under mild and neutral conditions.