An insight into the effect of g-C3N4 support on the enhanced performance of ZnS nanoparticles as anode material for lithium-ion and sodium-ion batteries

An insight into the sodium-ion and lithium-ion storage properties of CuS/graphitic carbon nitride nanocomposite

“…A rapid decrease in charge capacity is observed in the first 25 cycles for CuS electrode which then increases unevenly up to 170 cycles and drops again and is a signature of electrochemical activation resulting from constant disintegration and reformation of active material to generate fresh sites for Na + ion storage. 12 The deleterious effect of volume expansion leading to rapidly changing specific capacity during cycling is buffered by the presence of g-C 3 N 4 support in the 0.8CuS:0.2g-C 3 N 4 composite. Consequently, the cycling performance is quite steady in case of the composite and the enhanced specific capacity (479.5 mA h g −1 after 200 cycles at 0.1 A g −1 ) is attributed to higher surface area and pore volume which ensures higher number of Na + ions storage sites and better electrode/electrolyte contact.…”

“…28 However, corresponding studies on the electrochemical properties of transition metal sulfide composites with g-C 3 N 4 is relatively unexplored. 12,29 …”

“…11 The smaller band gap in transition metal suldes compared to their oxide counterparts, enhances the electronic conductivity of the former which is also advantageous in the context of electrochemical energy storage. 12 Among the various transition metal suldes, inexpensive and abundantly available CuS gains advantage as an anode material due to its moderately high theoretical capacity (560 mA h g À1 ) and electronic conductivity (10 À3 S cm À1 ). 13,14 However, its performance is marred by the volume expansion/contraction which occurs during the cycling process and leads to pulverization of the anode material and its consequent stripping off from the current collector strip.…”

Metal–Organic Framework-Derived ZnSe- and Co0.85Se-Filled Porous Nitrogen-Doped Carbon Nanocubes Interconnected by Reduced Graphene Oxide for Sodium-Ion Battery Anodes

“…In addition, Na + has a high content in the earth’s crust and is widely distributed. Therefore, the cost of developing SIBs is lower than that of LIBs. − However, the radius of Na + (1.06 Å) is larger than that of Li + (0.76 Å), which limits the diffusion of Na + in the anode and causes large volume expansion of the electrode material during the electrochemical process, resulting in poor dynamic performance and rapid capacity decay, which severely restricts the application potential of SIBs. − Therefore, it is necessary to develop advanced anode materials for SIBs.…”

One‐pot synthesis of SnS 2 Nanosheets supported on g‐C 3 N 4 as high capacity and stable cycling anode for sodium‐ion batteries

“…Recently, g-C 3 N 4 , a non-metal organic polymer with a graphene-like layered structure, highly porous morphology and large specific surface area, has been indeed investigated as a supporting matrix for active materials including MoS 2 , 31 WS 2 , 32 and ZnS. 33 The twodimensional (2D) structure of g-C 3 N 4 could provide a flexible matrix for active materials to disperse, leading to enhanced accommodation to the volume change. Therefore, g-C 3 N 4 , which can be prepared directly from precursors such as urea, thiourea, dicyandiamide and melamine, 34 could be a suitable option for coupling with SnS 2 .…”