Improved cycling stability of lithium–sulfur batteries using a polypropylene-supported nitrogen-doped mesoporous carbon hybrid separator as polysulfide adsorbent

Advanced Separators for Lithium‐Ion and Lithium–Sulfur Batteries: A Review of Recent Progress

“…Balach et al. demonstrated that N‐doped m‐C (Figure A) can adsorb more Li 2 S 6 than its counterpart without N dopant and used the N‐doped m‐C coating layer on a PP separator (Figure B, Table entry 7) . The coated separator was capable of preventing the aggregation of the sulfur and activating the trapped sulfur.…”

“…(D) Cycling performance of a Li–S battery based on a pristine PP separator and N‐doped m‐C‐coated PP separator at 0.2 C. Reproduced with permission from Ref. copyright 2015 Elsevier B.V.…”

“…It was shownt hat doping of the heteroatom in the carbon coating can promote the interaction between the polysulfide speciesa nd carbon coating, thus leading to an improved barrier properties (Table 2e ntries 5-7). [81] First principle studies show that polysulfides peciesh ave ah igher binding energy on nano-carboncontaining heteroatoms,s uch as N, than on ap ristine nanocarbons. [82] Furthermore, the binding between the heteroatom and Sw as demonstrated by K-edge X-ray absorption near edge spectroscopy measurements.…”

Graphene Oxide/Carbon Nanotube Bilayer Flexible Membrane for High‐Performance Li–S Batteries with Superior Physical and Electrochemical Properties

“…[9,10] Nevertheless, there are obstacles that should be overcome for the development of Li-S batteries, including the insulating nature of sulfur (5 × 10 −30 S cm −1 ), the large volume change of sulfur (≈80%), and the poor cycle performance by the shuttle phenomenon. [31,32] Among them, conductive carbon materials such as carbon fiber, [33][34][35][36][37] porous carbon, [38][39][40][41][42] graphite, [43][44][45] graphene Developing a highly effective interlayer inserted between the sulfur electrode and separator is one of the most important issues in Li-S battery research, because this interlayer enhances the cycle performance of the Li-S battery by trapping the lithium polysulfides in the sulfur electrode. These lithium polysulfides diffuse to the Li metal anode, leading to a loss of sulfur from the sulfur electrode and low coulombic efficiency (CE).…”

Enhanced polysulphide redox reaction using a RuO2 nanoparticle-decorated mesoporous carbon as functional separator coating for advanced lithium–sulphur batteries

“…N, S, B, P and their combination). 5,6 Another promising strategy pioneered by Nazar and co-workers is the employment of hydrophilic and polar metal oxides as host materials (TiO 2 , 7 Ti 4 O 7 , 8 MnO 2 9 ) to form relatively strong chemical bonds with LiPSs and thus keeping them localised on the cathode side. More recently, conductive metallic nanoparticles (Ni, Pt, Au) 10,11 have been incorporated to the sulphur cathode to improve the chemical affinity to LiPSs and the overall conductivity.…”