Notorious shuttle effects and poor electrical conductivity of S have long hindered the commercialization of lithium-sulfur (Li-S) batteries. Herein, N-doped porous carbon coated graphitic carbon nitride heterojunction (g-C₃N₄/ g-C₃N₄ @C) composites was prepared by growing g-C₃N₄/ g-C₃N₄ heterojunction on the pores of the porous carbon. The effective interface adhesion of g-C₃N₄/ g-C₃N₄ heterojunction and high conductive porous carbon served as S host insure the initial specific capacity of 752 mAh/g at 1 C, reversible capacity of 496 mAh/g at 1 C after 400 cycles, and higher rate capacity of 468 mAh/g at 2 C after 500 cycles for Li-S batteries. The mechanism of this ternary synergetic system for enhancement of electrochemical performance is based on effective interface adhesion and conductive property caused by different band energies of g-C₃N₄ and the N-doped porous carbon.

臭名昭著的穿梭效应和 S 的导电性差长期以来一直阻碍着锂硫 (Li-S) 电池的商业化。_{在此，通过在多孔碳的孔隙上生长gC 3} N ₄ / gC ₃ N ₄异质结制备了N掺杂多孔碳包覆的石墨氮化碳异质结(gC ₃ N ₄ / gC ₃ N ₄ @C)复合材料。_{gC 3} N ₄ / gC ₃ N ₄的有效界面附着力异质结和高导电多孔碳作为 S 主体确保 1 C 时的初始比容量为 752 mAh/g，循环 400 次后 1 C 时的可逆容量为 496 mAh/g，2 C 时的更高倍率容量为 468 mAh/g锂硫电池经过 500 次循环后。这种三元协同体系增强电化学性能的机制是基于由gC ₃ N ₄和N掺杂多孔碳的不同带能引起的有效界面粘附和导电性能。