N-doped carbon sheets arrays embedded with CoP nanoparticles as high-performance cathode for Li-S batteries via triple synergistic effects

A Highly Efficient Sulfur Host Enabled by Nitrogen/Oxygen Dual‐Doped Honeycomb‐Like Carbon for Advanced Lithium–Sulfur Batteries

“…This idea electrode also exhibits the highest capacity with that of other reported host materials. [12,[23][24][25][44][45][46][47][48][49][50][51] The data is exhibited in Table S6, Supporting Information.…”

“…Especially carbon with various morphologies and structures have been demonstrated to be an effective host material for improving the overall electrochemical performance of Li-S batteries. [22] Compared with the composite structures in which the polysulfide adsorption materials are grown on the conductive layer (carbon cloth, [23][24][25] conductive paper [26] ), regular pores are the dominant factor for the carbon matrix to have high sulfur loading and effective physical confinement for polysulfides. The large area and highly regular porous carbon can confine the sulfur in the nano-pores alone and make the sulfur nano-sized to increase the utilization of active materials and the transmission of lithium ions.However, the surface affinity between carbon materials and sulfur is poor due to the nonpolar property causing poor immobilization of LiPSs.…”

“…d) Discharge/charge curves of the N/O-HC900-S at various current densities from 0.1 to 3 C. e) Cycle performance at 0.2 C of the cells with the four host materials. f) Cycle performance for the N/O-HC900-S with different sulfur loading at a current density of 0.2 C. g) Long-cycling performance of the N/O-HC900-S cathodes at 0.5 and 1 C. h) Comparison of initial areal capacities and sulfur loading of the N/O-HC900-Swith that of other reported host materials [12,[23][24][25][44][45][46][47][48][49][50][51]. The data is exhibited in TableS6, Supporting Information.…”

Rational design of nanoarray structures for lithium–sulfur batteries: recent advances and future prospects

“…The CC@CoP/C-S cathode exhibited a higher first discharge capacity and a more stable cycle life than the CC@Co/C-S and CC@C-S cathode, demonstrating NA structure and phosphide catalysts are both vital for designing electrodes to maximize catalytic effects (figures 4(h) and (i)) [79]. Xiao et al proved the electrocatalytic effect of CoP/NC is higher than Co 9 S 8 /NC through comparison of the CV curves of a symmetric cell with a Li 2 S 6 catholyte and theoretical calculation [127]. Zhu et al conducted a systematic investigation of the electrochemical performance of sulfur in oxide-based and phosphide-based hosts.…”

A 3D-printed Al metal–organic framework/S cathode with efficient adsorption and redox conversion of polysulfides in lithium–sulfur batteries

“…3 Lithium-sulfur (Li-S) batteries have been considered as promising next-generation energy storage devices due to their high energy density, high theoretical capacity, low cost, rich sulfur resources, and environmental friendliness. [3][4][5][6][7][8][9] However, Li-S batteries still suffer from low conductivity, polysulde shuttling, limited reaction kinetics, huge electrode expansion, and side reaction. [10][11][12][13][14][15] To address these issues, many functional materials, such as carbonous materials, [16][17][18] conductive polymers, 19,20 metal carbides, 21,22 and metal compounds, [23][24][25] have been utilized as sulfur hosts in the cathodes of Li-S batteries.…”