Structural Evolution of 2D Microporous Covalent Triazine-Based Framework toward the Study of High-Performance Supercapacitors

Abstract

A series of nitrogen-containing micropore-donimated materials, porous triazine-based frameworks (PTFs), are constructed through the structural evolution of a 2D microporous covalent triazine-based framework. The PTFs feature predictable and controllable nitrogen doping and pore structures, which serve as a model-like system to more deeply understand the heteroatom effect and micropore effect in ionic liquid-based supercapacitors. The experimental results reveal that the nitrogen doping can enhance the supercapacitor performance mainly through affecting the relative permittivity of the electrode materials. Although microspores' contribution is not as obvious as the doped nitrogen, the great performances of the micropore-dominated PTF suggest that micropore-dominated materials still have great potential in ionic liquid-based supercapacitors.

Covalent Triazine Frameworks via a Low‐Temperature Polycondensation Approach

“…A pore size of around 12 Å was observed for all the CTFs, in agreement with theoretical values calculated from the idealized, crystalline models for the four CTF‐HUSTs (Scheme 1, green circles). The second type of pore apertures suggested by simulations for CTF‐HUST‐2, CTF‐HUST‐3 and CTF‐HUST‐4 (Scheme 1 c–e) were also observed by experiment (see shoulder peaks in Figure 2 b), although these materials are only partially ordered, and a distribution of pore sizes is often observed in purely amorphous porous polymers 7d. Similarly, such peaks can be artifacts of the NL‐DFT analysis.…”

Bioinspired Synthesis of Cu2+‐Modified Covalent Triazine Framework: A New Highly Efficient and Promising Peroxidase Mimic

“…[24] CTFs have found various applicationss uch as catalysts for the electrochemical oxygen reduction reaction, [25] catalyst carriers, [26] gas separation and purification, [27] and others, [28][29][30] however,t oo ur knowledge,t hey have not been effectively ex-plored as enzyme mimics so far.Incomparison with the reported nanomaterial, CTFs may be as uperior material for the construction of peroxidase mimics. [24] CTFs have found various applicationss uch as catalysts for the electrochemical oxygen reduction reaction, [25] catalyst carriers, [26] gas separation and purification, [27] and others, [28][29][30] however,t oo ur knowledge,t hey have not been effectively ex-plored as enzyme mimics so far.Incomparison with the reported nanomaterial, CTFs may be as uperior material for the construction of peroxidase mimics.…”

Ionothermally synthesized hierarchical porous Schiff-base-type polymeric networks with ultrahigh specific surface area for supercapacitors

“…S5d and Table S1 †). 3,26,27 The above analysis about the graphitization degree based on varied quaternary N content in HPPNs were experimentally conrmed by their Raman spectra. HPPN-400-30 and HPPN-600 have the relative lower I D /I G ratios in comparison with other HPPNs (see Fig.…”

“…1 It is well known that many materials display their function only when they exist as or are assembled into a certain structure or morphology. 2 Since the capacitance of an electrochemical double layer capacitor (EDLC) is strongly dependent on the interface between its porous electrode material and electrolyte, 3,4 the introduction of pores into carbonaceous materials with high surface area, large pore volume and the proper pore distribution will efficiently increase their effective surface area for the formation of electric double layer and enhance their electrochemical properties as electrode materials of EDLCs. Meanwhile, the introduction of heteroatom will inuence the electron distribution in carbonaceous materials.…”