Tris (2-(thiophen-2-yl) ethyl) phosphate to synergistically enhance electronic and ionic conductivities of cathode electrolyte interphase in high-voltage lithium ion batteries

Add time:07/12/2019    Source:sciencedirect.com

In this work, tris(2-(thiophen-2-yl) ethyl) phosphate is designed, synthesized and applied as a functional electrolyte additive for lithium ion batteries with high-voltage LiCoO2 cathode. The tris(2-(thiophen-2-yl) ethyl) phosphate contains both of thiophen group and phosphorus element. The thiophen group forms a thinner electron conductive cathode electrolyte interphase to increase the thermal stability of LiCoO2 to de-active the catalytic and oxidative sites. In addition, the phosphorus element enhances the interfacial lithium ion conductivities by forming LiPxOyFz. Therefore, the thiophen group and phosphorus element in tris(2-(thiophen-2-yl) ethyl) phosphate work synergistically to optimize the electronic and ionic conductivity of cathode electrolyte interphase in high-voltage lithium ion batteries. As a result, when the batteries are cycled in the electrolyte with 0.1 wt% tris(2-(thiophen-2-yl) ethyl) phosphate, the Li//LiCoO2 half cells perform high thermal stability and deliver an excellent rate capability of 140 mAh g−1 at 5 C, and the graphite//LiCoO2 full cells present a significantly improved discharge capacity and stability of 139.9 mAh g−1 at 130 cycles with a high capacity retention of 90.72%.

We also recommend Trading Suppliers and Manufacturers of (S)-5-Methoxy-N-propyl-N-(2-(thiophen-2-yl)ethyl)-1,2,3,4-tetrahydronaphthalen-2-aMine (cas 1148154-91-9). Pls Click Website Link as below: cas 1148154-91-9 suppliers

Prev:Nickel complexes of 1,2,4-triazole derived amido-functionalized N-heterocyclic carbene ligands: Synthesis, theoretical studies and catalytic application
Next:Molecular and crystal structures and spectroscopic properties of 2-oxo-2-(Thiophen-2-yl) ethyl phosphonic acid)