Modified reaction kinetics in ester-based electrolyte to boost sodium storage performance: a case study of MoS₂/Ti₃C₂T_x hybrid

Abstract

Compared with the ordinary ester-based electrolytes, the excellent match between ether-based electrolytes and transition-metal dichalcogenides (TMDs) electrodes dramatically promotes their sodium storage performances. However, the origin for the superior electrochemical...

V3S4/PPy nanocomposites with superior high-rate capability as sodium-ion battery anodes

“…The relationship between current intensity (i) and the scan rate (v) can be expressed by formulae (1) and (2). [77][78][79][80] i = av b (1)…”

“…The relationship between current intensity ( i ) and the scan rate ( v ) can be expressed by formulae (1) and (2). 77–80 i = av b log( i ) = log( a ) + b log( v )where a and b are constants. It is worth noting that when the b value is close to 0.5, it indicates that the specific capacity of the electrode material is mainly controlled by diffusion, and when the b value is close to 1, it means that the specific capacity of the electrode material is dominated by capacitance.…”

Hollow heterostructured Cu1.96S/NiS microspheres coupled with nitrogen/sulfur dual-doped carbon realizing superior reaction kinetics and sodium storage

“…Obviously, a very similar profile is observed at each current density, suggesting its high electrochemical activity with relatively small polarization. [52][53][54][55][56] As a comparison, the pristine Cu 1.96 S/NiS anode exhibits visible capacity fading at 0.2 A g À1 (Fig. S5b, ESI †), and the rate cycling performance is much inferior to that of the Cu 1.96 S/NiS@DC electrode (Fig.…”

Antimony Sulfide-Based Materials for Electrochemical Energy Conversion and Storage: Advances, Challenges, and Prospects

“…It is well-known that an electrolyte serves a crucial role in SIBs. The energy densities of battery systems and the stability of voltage windows could be effectively improved by using suitable electrolytes. − As well-matched aprotic electrolytes for TMSs, ether-based electrolytes with strong stability were employed to boost the electrochemical performance of Sb 2 S 3 /SnS 2 /C as shown in Figure d. In NaPF 6 -diglyme electrolyte systems, the capacity could be kept at about 642 mAh g –1 at 1.0 A g –1 after 600 cycles .…”