Long-life and high-areal-capacity lithium-sulfur batteries realized by a honeycomb-like N, P dual-doped carbon modified separator

Fabrication of a Light‐Weight Dual‐Function Modified Separator towards High‐Performance Lithium‐Sulfur Batteries

“…The thiosulfate −S−S*O 3 band at 167.4 eV may be originated from the oxidation of the polysulfides by LiNO 3. The Li−S and S−S bands in the range of 162–166 eV are clearly identified . For the Li 1 s spectra (Figure d and e), a prominent peak emerges after cycling.…”

Ultra-lightweight Ti3C2T MXene modified separator for Li–S batteries: Thickness regulation enabled polysulfide inhibition and lithium ion transportation

“…The cells made with the Ti 3 C 2 T x -PP and Ti 3 C 2 T x /CNTs 10%-PP separators with a mass loading of 0.016 mg cm −2 had lower V values of 0.348 and 0.279 V, respectively. Based on the V values, we concluded that the redox reaction kinetics were significantly better with the modified separators [40,41] . The current in the cell with the PP separator at point b was 1.21 mA, which was much lower than in cells made with the Ti 3 C 2 T x -PP (1.771 mA) and Ti 3 C 2 T x /CNTs 10%-PP http://engine.scichina.com/doi/10.1016/j.jechem.2019.06.014 Fig.…”

A rational design of the coupling mechanism of physical adsorption and chemical charge effect for high-performance lithium–sulfur batteries

“…The former bond is indexed to the existence of amorphous carbon or decient graphitized carbon, and the latter band is related to the tangential vibration of the sp 2bonded carbon atoms in the crystallographic graphite structure. 34,39 In addition, it could be calculated that the peak height ratio of I D /I G is 1.01, which shows a favorable graphitization degree for NACC. The graphitic structure developed in NACC is benecial for the electronic conductivity.…”

“…Besides, the application of N, P element in Li-S batteries has been further proved its strong chemical adsorption to polysuldes, improving rate and cycling performance. 1,34,35 Herein, a novel coated separator was devised, as shown in Fig. 1, which employed the sulfonated polystyrene (SPS) as the binder and appropriate ratio of N-doped activated conductive carbon (NACC) and acetylene black (AB) as the coated materials.…”