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A spherical porous carbon (SPC) with high specific surface area is prepared by spray pyrolysis at 800°C followed by removing silica template. The prepared SPC is employed as a conductive matrix in the sulfur cathode (S-SPC) for lithium-sulfur secondary batteries. The BET surface area of the prepared SPC sample is as high as 1,133 m 2 g −1 and the total pore volume is 2.75 cm 3 g −1 . The electrochemical evaluations including charge-discharge tests, cyclic voltammograms (CV), and electrochemical impedance spectrum suggest that the prepared S-SPC composite presents superior electrochemical stability when compared to the S-SP cathode. The as-prepared S-SPC composite shows improved cycle performance. The reversible discharge capacity is about 637 mAh g −1 after 50 cycles, which is much better than that of the as-prepared sulfur-Super P carbon black composite. It may be attributed to the high porosity and excellent conductive structure of the SPC.

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