Holey reduced graphene oxide/carbon nanotube/LiMn0.7Fe0.3PO4 composite cathode for high-performance lithium batteries

Facile Synthesis of High Electrochemical Performance Na2FePO4F@CNT&GN Cathode Material as Sodium Ion Batteries

“…26,27 Recently, it has been reported that comodification by CNT and reduced graphene oxide for electrode materials such as Na their electrochemical performance compared to the single conductive material. 36,37 Therefore, it is necessary and expected to investigate the effects on the structure and electrochemical properties of NFPF by combining both CNT and GN as double conductive carbon materials.…”

“…As for GN, active material particles can be attached to their layers, providing a large number of conductive contact sites for the electrode material particles . Although independent 1D or 2D conductive carbon could improve the electrochemical performance, especially high rate capability of NFPF to some extent as reported, most of their discharge plateau was seriously pulled down originated from capacitive behavior because of ultrasmall nanoparticles. , Recently, it has been reported that comodification by CNT and reduced graphene oxide for electrode materials such as Na 4 Mn 9 O 18 and LiMn 0.7 Fe 0.3 PO 4 could remarkably improve their electrochemical performance compared to the single conductive material. , Therefore, it is necessary and expected to investigate the effects on the structure and electrochemical properties of NFPF by combining both CNT and GN as double conductive carbon materials.…”

Graphene: A promising candidate for charge regulation in high-performance lithium-ion batteries

“…They found that only the GMs electrodes with defect-induced pores can exhibit better Li storage performance in contrast to graphene aerogels, which revealed that both defect sites and porous structure are vital for the Li storage properties. Nevertheless, a high porosity and high conductivity often display a tradeoff relationship owing to the fact that excessive defect pore sizes and densities in graphene would otherwise damage the integrity of graphene sheet and give rise to poor electron transport resulted from the scattering effect [63][64][65]. Therefore, in order to gain an optimal balance between electrical conductivity and ionic transport, it is desirable to rationally control the pore sizes and densities of defects in graphene to finely tune the electrochemical properties of graphene for optimal use in LIBs.…”

Complexation of Conductive Agents to Cathode Active Materials of Lithium-Ion Batteries Using the Poly–Ion Complex Formation Reaction

“…On the other hand, as an example of binding an organic molecule to the active material, La et al and Ryou et al prepared particles in which polypyrrole or catechol-based polymers were bonded to the Si surface. , These active material-substrate composite particles are usually fabricated electrode films to discuss their performance, but there are significant differences in the deposition methods. Typically, electrode films are deposited by slurry coating. − However, there were some cases of active material–organic composite particles that were pressed to form a film without using solvents. , Therefore, using composite particles with both conductive agents and organic molecules, or at least organic molecules bonded to the active material, would allow solvent-free film formation, eliminate the solvent drying process, which is essential for the slurry coating process. This would strongly inhibit binder segregation and aggregation of the conductive agent, ultimately lead to an improved performance and productivity.…”