NANOMETER-SULFUR COMPOSITE POSITIVE ELECTRODE MATERIAL FOR RARE EARTH LITHIUM-SULFUR BATTERY AND MET

文件类型：PDF文档
文件大小：32K
PROBLEM TO BE SOLVED : To provide a method for manufacturing a nanometer-sulfur composite positive electrode material for a rare earth lithium-sulfur battery which has advantages such as a high specific energy density, a preferable cycle characteristic, a low cost and advantage in environmental protection. SOLUTION : There is provided a nanometer-sulfur composite positive electrode material for a rare earth lithium-sulfur battery and a method for manufacturing the same. In the method, a carbon nanotube and sublimed sulfur with a certain weight ratio are mixed with a ball mill and calcined twice under negative pressure in a flowing Argon gas atmosphere at 200-300°C and at 300-400°C each for about 5 hours while maintaining the temperatures, to produce the nanometer-sulfur composite positive electrode material for a rare earth lithium-sulfur battery. The nanometer-sulfur composite positive electrode material for a rare earth lithium-sulfur battery manufactured by the preparation recipe and the manufacturing method has a particle size of less than 1 micron, a capacity of greater than 1000 mAh/g, and a long cycle life of greater than 1000 times. COPYRIGHT : (C)2013, JPO&INPIT