Development of Olganosulfur Cathodes Using Nanofiber Nonwoven Precursor and Their Electrode Performance for the Rechargeable Lithium Battery

Abstract

An organosulfur compound cathode material was prepared by hot-pressing a mixture of polyacrylonitrile nanofiber nonwoven and sulfur on carbon paper substrate at 300°C. The organosulfur compound showed good heat resistance above 500°C. The organosulfur cathode showed high capacity of over 600 mAh g^-1, long cycle life more than 1,000 cycles, and wide temperature range of -30°C to 60°C. Energy density per weigh of the organosulfur cathode was twice the conventional positive materials.