2D spinel ZnCo2O4 microsheet-coated functional separator for promoted redox kinetics and inhibited polysulfide dissolution

Multidimensional Hybrid Architecture Encapsulating Cobalt Oxide Nanoparticles into Carbon Nanotube Branched Nitrogen‐Doped Reduced Graphene Oxide Networks for Lithium–Sulfur Batteries

“…For the practical applications of LSBs, the electrochemical performance was evaluated at a high mass loading of (>4.0 mg cm −2 ), which can compete with up‐to‐date LIBs. [ 55 ] As shown in Figure 6d, the Co@CNT/nG‐based LSB cells with the S loadings of 3.3, 4.6 and 6.5 mg cm −2 delivered high areal capacities of 2.48, 3.97 and 5.62 mAh cm −2 , respectively, at 0.2 C. After 100 cycles, these cells maintained areal capacities up to 2.16, 3.51 and 5.05 mAh cm −2 , corresponding to capacity decay rates of 0.087%, 0.098% and 0.084% per cycle, respectively. In particular, the high areal capacity of Co@CNT/nG‐based LSB cells with 6.5 mg cm −2 is comparable to that of commercial LIBs.…”

Recent progress in ZnCo2O4and its composites for energy storage and conversion: a review

“…To replace the current LIBs, lithium-sulfur (Li-S) batteries are considered as the most potential energy storage systems due to the high theoretical specific capacity (1675 mA h g -1 ) and high specific energy (2600 Wh kg -1 ) of sulfur cathode [238][239][240][241][242] . Owing to their well-defined crystallinity, and high porosity, the mixed transition metal oxides structure is regarded as a perfect selection for cathode material, the interstitial spaces surrounded by the octahedra interconnect into three dimensions, accommodating guest ions, i.e., lithium ions [243][244][245] . To explore the potentiality of ZnCo2O4 as Li-S electrode, Sun et al 243 synthesized ZnCo2O4 porous particles N-doped rGO via the combined procedures of refluxing and hydrothermal treatment.…”

“…[237][238][239][240][241] Owing to their well-defined crystallinity and high porosity, mixed transition metal oxides are regarded as perfect selections for cathode materials, and the interstitial spaces surrounded by the octahedra interconnect into three dimensions, accommodating guest ions, i.e., lithium ions. [242][243][244] To explore the potentiality of ZnCo 2 O 4 as a Li-S electrode material, Sun et al 242 synthesized ZnCo 2 O 4 porous particles anchored on N-doped rGO via the combined procedures of refluxing and hydrothermal treatment. ZnCo 2 O 4 @N-rGO when used as a cathode material for Li-S achieved 1332 mA h g À1 , which was maintained at 720 mA h g À1 after 200 cycles.…”

NiFe ‐layered double hydroxide nanosheets grafted onto carbon nanotubes for functional separator of lithium sulfur batteries

“…8,9 However, these carbonaceous materials-based separators are difficult to fully suppress the polysulfides due to the weak physical adsorption with polar LiPSs. Although some inorganics such as metal oxides, 10,11 nitrides, 12 sulfides, 13 and hydroxides 14,15 are also employed to modify the separator effectively capturing LiPSs owing to their strong chemical interaction, their poor conductivity and inaccessibility of active sites to some extent still limit their practical applications.…”