Heterostructure ZnSe-CoSe2 embedded with yolk-shell conductive dodecahedral as Two-in-one hosts for cathode and anode protection of Lithium–Sulfur full batteries

A bifunctional VS2–Ti3C2 heterostructure electrocatalyst for boosting polysulfide redox in high performance lithium–sulfur batteries

“…8c and Table S3 † exhibit the most critical parameters for the comparison of carbon-based and heterostructure materials as cathode hosts of LSBs. 56,[63][64][65][66][67][68][69][70][71][72][73][74][75][76][77][78][79][80][81][82] Note that the introduction of the VS 2 -Ti 3 C 2 host results in higher capacity and the lower capacity decay rate per cycle. This result indicates that VS 2 -Ti 3 C 2 /S electrodes have great advantages to assist LSBs to achieve practical applications.…”

Construction of Ni/Ni3N heterojunctions as reversible micro-reaction centers for lithium polysulfides

“…Due to the strong electronic interaction at the heterojunction interface, the "shuttle effect" can be effectively alleviated. 14,30 Since the ability of the hosts to adsorb LiPSs plays an important role in the charge-discharge process of the sulfur cathodes, the adsorption energies of 31 To investigate the kinetic behavior and Li + diffusion characteristic in the Ni/Ni 3 N-CNT/S electrode, CV tests at various scan rates (Fig. 5b and c) and EIS analysis (Fig.…”

“…Meanwhile, the distinguished anodic peaks demonstrate the excellent reversibility of the redox reaction. 31 To investigate the kinetic behavior and Li + diffusion characteristic in the Ni/Ni 3 N–CNT/S electrode, CV tests at various scan rates (Fig. 5b and c) and EIS analysis (Fig.…”

A bidirectional electrocatalyst for enhancing Li2S nucleation and decomposition kinetics in lithium–sulfur batteries

“…39–41 However, the catalytic effect of these porous materials is relatively weak, even shielding the active sites of Ti 3 C 2 to some extent. Compared with porous materials, metal selenides exhibit excellent polarity to form Li–Se bonds, which are beneficial for promoting the uniform deposition of Li 2 S. 42,43 Meanwhile, metal selenides can catalyze the cleavage of Li–S bonds to accelerate Li 2 S decomposition due to the abundant active sites. 44 Therefore, integrating Ti 3 C 2 nanosheets with metal selenides as an efficient electrocatalyst for accelerating the sulfur redox reaction is extremely significant in Li–S batteries.…”