Liu, Hanwen; Lai, Wei-Hong; Yang, Qiuran; Lei, Yaojie; Wu, Can; Wang, Nana; Wang, Yun-Xiao; Chou, Shu-Lei; Liu, Hua Kun; Dou, Shi Xue published the artcile< Understanding sulfur redox mechanisms in different electrolytes for room-temperature Na-S batteries>, COA of Formula: C19H34O2, the main research area is carbonate ester ether sodium sulfur battery diffusion property; Carbonate ester electrolyte; Ether electrolyte; Room-temperature sodium–sulfur batteries; Sulfur cathode; Sulfur redox reactions.
This work reports influence of two different electrolytes, carbonate ester and ether electrolytes, on the sulfur redox reactions in room-temperature Na-S batteries. Two sulfur cathodes with different S loading ratio and status are investigated. A sulfur-rich composite with most sulfur dispersed on the surface of a carbon host can realize a high loading ratio (72% S). In contrast, a confined sulfur sample can encapsulate S into the pores of the carbon host with a low loading ratio (44% S). In carbonate ester electrolyte, only the sulfur trapped in porous structures is active via ‘solid-solid’ behavior during cycling. The S cathode with high surface sulfur shows poor reversible capacity because of the severe side reactions between the surface polysulfides and the carbonate ester solvents. To improve the capacity of the sulfurrich cathode, ether electrolyte with NaNO3 additive is explored to realize a ‘solid-liquid’ sulfur redox process and confine the shuttle effect of the dissolved polysulfides. As a result, the sulfur-rich cathode achieved high reversible capacity (483 mAh g-1), corresponding to a specific energy of 362 Wh kg-1 after 200 cycles, shedding light on the use of ether electrolyte for high-loading sulfur cathode.
Nano-Micro Letters published new progress about Binding energy. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, COA of Formula: C19H34O2.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics