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Table 1. Recent progress on polar inorganics as host materials in cathodes for lithium-sulfur batteries. Polar inorganic host TiO2 TiO2 Nb2O5 δ-MnO2 MnO2 Ti4O7 Co3O4 Ti4O7 Ti6O11 CoS2 Co9S8 TiS2 MoS2 Ti3C2 TiC Nanostructures Yolk-shell Mesoporous spheres Nanocrystal with mesoporous carbon sphere Nanosheet Nanosheet decorated hollow sulfur spheres Nanoparticles Ultrathin nanosheets particles Nanowires Micro-sized cluster with 15 wt% graphene Co9S8/C hollow nanopolyhedra Core-shell Nanosheet Nanosheet with 10 wt% CNT Nanosheet with amount of graphene Sulfur content & sulfur loading massa) 53 & 0.4-0.6 49 & N/A 48 & 1.5 56 & 0.7-1.0 57 & 1.7-2.1 48 & 1.5-1.8 42 & 0.6-1.0 51 & 0.5-1.5 52 & 0.5-1.5 60 & 0.4 62 & 1.5 and 3.0 51 & 1 (based on Li2S) N/A & 2 63 & 1.5 and 5.5 55 & 3.5 Binding energy N/A -2.31 (M3-HTSs) and -2.93 (M4-HTSs) eV between Sn2- with TiO2 (001) surface 65.16 kcal mol-1 (equal to 2.82 eV) between Li2S6 and Nb2O5 N/A MnO2 (100) surface N/A 5.58 eV between Li2S and Co3O4 -4 eV between Li2Sx and Ti4O7 (1-20) N/A 1.97 eV between Li2S4 and (111) plane of CoS2 -6.08, -4.03, -2.97, -4.52, and -5.51 eV between Li2Sx (x=8, 6, 4, 2, 1) and Co9S8 2.99 eV between Li2S and a single layer of TiS2 0.87 eV (2.70 eV, 4.48 eV) between Li2S and MoS2 terrace site (S-, Mo-edge) 15.76 eV between Li2S4 and Ti3C2 -1.89 eV (-2.75 eV) between Li2S4 (Li2S) and TiC (100) Cycling datab) Ref. 1030 (690)/1000 [36] /0.5C 801 (688)/200/0.5C [38] 1289 (913)/200/0.5C [49] 1120 (1030)/200/0.2C [50] 1043 (1072)/200/0.2C [51] 850 (595)/500/2C [58] 890 (572)/300/0.6C [63] 623 (604)/250/0.5C [59] 713 (635)/100/0.1C [59] 1368 (1005)/150 [70] /0.5C 1020 (790)/200/0.5C [71] [1.5 mg cm-2] 840 (680)/300/0.5C [3.0 mg cm-2] 956 (736)/400/0.5C [72] 1068(over 800)/300/ [75] 0.5C 1216 (450)/1200/ [86] 0.5C [1.5 mg cm-2] 916 (500)/250/0.2C [5.5 mg cm-2] 1032 (670)/100/0.2C [87] In the range of -3.86 to - 5.15 eV between Sn2- species and a) The sulfur content was calculated based on the weight of sulfur in the cathode and the unit is wt %. The unit of sulfur loading mass is mg cm-2. b) The cycling data are summarized as Initial (final) capacity/corresponding cycle number/corresponding current density. The specific capacity was calculated based on the weight of sulfur, and the unit of capacity is mAh g-1. 36PDF Image | Advances in Polar Materials for Lithium-Sulfur Batteries
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