Bipolar fluorinated covalent triazine framework cathode with high lithium storage and long cycling capability

Abstract

A bipolar fluorinated covalent triazine framework (FCTF) was successfully synthesized by the self-polymerization of tetrafluoroterephthalonitrile and exhibited high reversible capacities, long cyclability as a cathode for lithium ion batteries.

Iodine doping induced activation of covalent organic framework cathodes for Li-ion batteries

“…Besides, a weaker diffraction peak intensity at 3.5°for COF-I is observed, implying the decreased crystallinity of COF structure aer the induction of iodine species. 41 The porosity of COF and COF-I was evaluated at 77 K by N 2 adsorption-desorption measurements. Both COFs show reversible isotherms with a steep uptake at low pressures (P/P 0 < 0.1) (Fig.…”

Ultrastable hydrated vanadium dioxide cathodes for high-performance aqueous zinc ion batteries with H+/Zn2+ Co-insertion mechanism

“…In general, the relationship between the peak current (i) of the CV curve and the scan rate (v) can be expressed as i ¼ av b , where a and b are adjustable parameters. [35][36][37] The b value is generally between 0.5 and 1.0, reecting the mode of the electrochemical process. For a diffusion-controlled process, b ¼ 0.5, whereas b is 1.0 for a capacitively-controlled process.…”

Recent Developments and Research Avenues for Polymers in Electric Vehicles

“…Chen et. al reported the process for cathodic materials consisting of bipolar fluorinated covalent triazine framework that possesses high lithium storage and long cycling ability [133] …”

“…al reported the process for cathodic materials consisting of bipolar fluorinated covalent triazine framework that possesses high lithium storage and long cycling ability. [133] Until today, many EV manufacturers were still relying on lithium-ion batteries as a power source for their EVs. Some experts in countries like Japan and Germany are paving the way for the option of hydrogen fuel cells because they do not want to rely much on different countries for crude oil or other battery raw materials.…”