Text this: Polyaniline (PANi) as one kind of conducting polymers has been playing a great role in the energy storage and conversion devices besides carbonaceous materials and metallic compounds. Due to high specific capacitance, highflexibility and lowcost, PANi has shown great potential in supercapacitor. It alone can be used in fabricating an electrode. However, the inferior stability of PANi limits its application. The combi-nation of PANi and other active materials (carbon materials, metal compounds or other polymers) can surpass these intrinsic disadvantages of PANi. This review summarizes the recent progress in PANi based composites for energy storage/conversion, like application in supercapacitors, rechargeable batteries, fuel cells andwaterhydrolysis. Besides, PANi derivednitrogen-dopedcarbonmaterials,whichhavebeenwidely employed as carbon based electrodes/catalysts, are also involved in this review. PANi as a promising ma-terial for energy storage/conversion is deserved for intensive study and further development.

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