Bismuth-based mixed-anion compounds for anode materials in rechargeable batteries

A facile solvothermal synthesis approach for chemical composition control in ternary Bi-S-I systems is reported by simply controlling the sulfide concentration. We demonstrate the application of these bismuth-based ternary mixed-anion compounds as high capacity anode materials in rechargeable batteries. Cells utilising Bi13S18I2 achieved an initial capacity value of 807 mA h g(-1), while those with BiSI/Bi13S18I2 a value of 1087 mA h g(-1) in lithium-ion battery systems.

Automated summary

This article reports a facile solvothermal synthesis approach for controlling the chemical composition in ternary Bi-S-I systems by simply controlling the sulfide concentration. The application of these bismuth-based ternary mixed-anion compounds as high capacity anode materials in rechargeable batteries is demonstrated. Cells utilizing Bi13S18I2 achieved an initial capacity value of 807 mA h g(-1), while those with BiSI/Bi13S18I2 reached a value of 1087 mA h g(-1) in lithium-ion battery systems.