LAUSR

Abstract Deciphering the structural and volume changes occurring during electrode reactions in lithium-ion batteries is perhaps a boon for high energy density batteries. Here, we report the synthesis of 3D network of dichalcogenide molybdenum disulfide (MoS 2 ) encapsulated over nitrogen rich graphitic carbon nitride nanosphere (g-C 3 N 4 ) forming an interconnected and uniform g-C 3 N 4 /MoS 2 scaffolds. The crystallinity, phase purity, morphological features and elemental composition were evaluated through XRD, FESEM, TEM, HRTEM, BET and XPS analyses. The electrochemical properties of N-rich g-C 3 N 4 /MoS 2 scaffolds were investigated as potential anode materials for lithium-ion batteries. Electrochemical testing of the g-C 3 N 4 /MoS 2 constructured electrode delivered reversible capacity of 857 mAh g −1 at 0.1 C rate after fifty cycles and exhibited a high rate performance with reversible capacity of 383 mAh g −1 at 10 C rate (higher than theoretical capacity of graphite, 372 mAh g −1 ). The superior electrochemical property of g-C 3 N 4 /MoS 2 is attributed to N-rich carbon support which favors better electronic conductivity, and affords more sites for Li + ions. The nitrogen rich carbon nitride accommodates volume changes caused during repeated charge/discharges and maintains high structural integrity and specific capacity.