Emerging covalent triazine framework-based nanomaterials for electrochemical energy storage and conversion

Abstract

Recently, the raising concerns on environmental and energy-related issues resulted from fossil fuels have triggered extensive research into sustainable electrochemical energy storage and conversion (EESC). Covalent triazine frameworks (CTFs) possess...

Tetraphenylcyclopentadiene-based conjugated microporous polymers for high-performance energy storage carbons

“…The analysis of these observations demonstrates that owing to doping carbons with nitrogen and oxygen atoms, CP-TCT-700 and CPM-TCT-700 exhibited a strong interaction between the electrode and either the electrolyte or the charge collector, quick charge diffusion and excellent conductivity. 85 In addition, the reasonable BET surface areas of our carbons involve a huge area of contact between the electrode material and KOH ions which suggests extra active sites for storing energy. The produced microporous carbons with lower ESR values are in full accordance with their high BET surface area, and their high specific capacitance is comparable to the starting triazine-based polymers.…”

“…Alternatively, the conductivity problems can be solved by the conversion of CTFs to the corresponding carbon materials, which can highly boost their electrical conductivity, while preserving the basic CTF structure, producing relatively high capacitances for the applications of SCs. 85 Additionally, in EDLCs, the accessible surface area of the electrode to KOH ions had a significant role in the supercapacitive efficiency. Consequently, porous carbons are generally used as electrode materials owing to their high specific surface area, good thermo-chemical stability, and excellent electrical conductivity.…”

Boosting Charge Transfer of Fe Doping BiVO4/CoOx for Photoelectrochemical Water Splitting

“…31 Using this approach, Domen et al used Fe-incorporated Nibased OECs to achieve a photostability of BiVO 4 for over 1100 h. 32 Recently, Co-based OECs have received extensive attention due to their low cost and high performance in near-neutral pH solutions. 33 Furthermore, the Co 3+/2+ species could lower the water oxidation reaction overpotential, which has a great effect on the improvement of photogenic electron separation efficiency. Combined with previous work reports, we doped Fe into BiVO 4 and hybrid CoO x to effectively improve the performance of PEC.…”

Synthesis of Few-Layer Graphene by Ball-Milling for Oxygen Reduction: Kinetics and Mechanistic Insights

“…Later, the heat-treated MNC and metal-free heteroatom-doped carbon catalysts demonstrate an improved ORR activity in energy conversion devices and the H 2 O 2 industry. − Although the real active sites of MNC catalysts are debatable, further developments show competitive ORR activity than benchmark Pt/C catalysts in the acidic and alkaline medium. A few review articles discussed the evolution of MNC catalysts as a promising alternative to Pt-based cathodes in fuel cells. ,,− The new class of carbon-based materials without metals (metal-free) was reported with significant ORR activity. − The metal-free catalysts improved the stability of electrocatalysts and substantially reduced the cost of the materials.…”