نتایج جستجو برای: polysulfide polymer
تعداد نتایج: 93676 فیلتر نتایج به سال:
objective: pmbn, poly [2-methacryloyloxyethyl phosphoryl choline (mpc)-co-n- buthyl methacrylate (bma)-co-p-nitrophenyl- oxycrabonyl poly (ethylene glycol-methacrylate (meonp)], as a biocompatible ter-polymer is a unique polymer with wide range of application from drug delivery systems to scaffolds and biomedical devices. in this research, monomer of p- nitrophenyl- oxycarbonyl poly (ethylene g...
The lithium-sulfur (Li-S) battery has been regarded as an important candidate for the next-generation energy storage system due to its high theoretical capacity (1675 mAh g−1) and density (2600 Wh kg−1). However, shuttle effect of polysulfide seriously affects cycling stability Li-S battery. Here, a novel Fe3C-decorated folic acid-derived graphene-like N-doped carbon sheet (Fe3C@N-CS) was succe...
The Mg-S battery suffers from the slow Mg2+ diffusion rate in solid discharge products (MgS2, MgS). A possible solution to this problem is Mg-polysulfide flow battery. formation of could potentially be avoided with a high voltage cut-off for process, instead producing soluble magnesium polysulfides (MgSx). Here, feasibility investigated, and low active material utilization lack reversibility fo...
The shuttling of soluble lithium polysulfides between the electrodes leads to serious capacity fading and excess use electrolyte, which severely bottlenecks practical Li-S batteries. Here, selective catalysis is proposed as a fundamental remedy for consecutive solid-liquid-solid sulfur redox reactions. proof-of-concept Indium (In)-based catalyst targetedly decelerates solid-liquid conversion, d...
Polysulfide shuttle effect, causing extremely low Coulombic efficiency and cycling stability, is one of the toughest challenges hindering development practical lithium sulfur batteries (LSBs). Introducing catalytic nanostructures to stabilize otherwise soluble polysulfides promote their conversion solids has been proved be an effective strategy in attacking this problem, but heavy mass catalyst...
Room-temperature alkali metal–sulfur batteries are promising alternatives to lithium-ion because of their high capacity and low inherent cost. Herein, we report MXene (Ti3C2Tx) as a host confine sulfur (S8), enabling the use commercialization-friendly carbonate electrolyte in batteries. The multilayer structure provides tunable spacing for S8 confinement, its unique interlayer prevents adverse ...
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