ACTIVATED CARBON LIFE SPAN As a crucial component, carbon substrates with appropriate porous structures are highly desired in developing sulfur-carbon cathodes for Li–S batteries with superior performance. Here we show that the electrochemical performance of the sulfur-carbon cathode can be easily adjusted by tuning the pore structure of the carbon substrate. With potassium hydroxide as the activation agent, a series of micro-/mesoporous carbon hosts have been prepared via chemical activation of hydrothermal carbon precursors. The pore structure of the carbon host can be easily controlled by adjusting the activation concentration of KOH and is found to be directly related to the battery performance of sulfur loaded inside. An optimized pore structure is yielded at a KOH concentration of 1 M, at which the sulfur-carbon cathode shows a high specific capacity, favorable rate capabilities and a long cycle life of 800 cycles at 1 C. The impressive electrochemical performances benefit from the advanced micro-/mesoporous carbon spheres with a large percentage of microspores, moderate activation, and surface area. #Activated-Carbon #Activated-Carbon-in-Vadodara #Activated-Carbon-in-gujarat #Activated-Carbon-in-india #Activated-Carbon-in pune #Activated-Carbon-in-tamilnadu #Activated-Carbon-in-karnataka #Activated-Carbon-in-indor #Activated-Carbon-in-goa #Activated-Carbon-in-shrinagar #Activated-Carbon-in-halol #Activated-Carbon-in-nagpur #Activated-Carbon-in-kolhapur #Activated-Carbon-in-cherapungi #Activated-Carbon-in-assam #Activated-Carbon-in-junaghdh