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

摘要

PROBLEM TO BE SOLVED: To provide a secondary battery capable of inhibiting the elution of sulfur from a positive electrode into an electrolyte, and inhibiting the degradation in charge-discharge cycle characteristics, and a method for manufacturing the same.SOLUTION: The secondary battery comprises a conductive substrate 11, a plurality of carbon nanotubes 12 standing on the conductive substrate 11, and a positive electrode containing sulfur 13 held at least in a portion of the space between the carbon nanotubes 12. A negative electrode contains a material absorbing and desorbing lithium ions, and an electrolyte is composed of a nonaqueous electrolyte containing lithium ions.