SECONDARY BATTERY, METHOD FOR MANUFACTURING SECONDARY BATTERY, POSITIVE ELECTRODE FOR SECONDARY BATTERY, METHOD FOR MANUFACTURING POSITIVE ELECTRODE FOR SECONDARY BATTERY, BATTERY PACK, ELECTRONIC INSTRUMENT, ELECTRIC VEHICLE, ELECTRICAL POWER SYSTEM AND ELECTRIC POWER STORAGE POWER SOURCE

摘要

The secondary battery includes a positive electrode including an electroconductive substrate, a plurality of carbon nanotubes that are disposed in a standing manner on the electroconductive substrate, and sulfur that is retained at least a part of spaces among at least the carbon nanotubes. The negative electrode includes a material that stores and releases lithium-ions, and a nonaqueous electrolyte including lithium-ions is used as the electrolyte.