Solvent-free and in situ synthesis of three-dimensional covalent organic frameworks thin films on Zn anodes for Zn–air batteries

Solvent-free synthesis of organic electrodes for green sustainable energy storage

“…4b). 52 Another problem faced by the ZABs is the slow oxygen reduction reaction (ORR) performance. The synthesized CTFs by the solvent-free method can be used as a good ORR catalyst to accelerate the rate of the O 2 reduction reaction.…”

Engineering Covalent Organic Frameworks Toward Advanced Zinc‐Based Batteries

“…To date, the synthesis of 3D COF films remains a research hotspot, and it is momentous to probe a novel and superior synthesis method for preparing 3D COF films. Mei et al [128] proposed a solventless in situ synthesis method for 3D COF thin films on a Zn surface (Figure 14f). Two 3D COF films, namely TAM-Tp and TAM-BPDA, were constructed from tetrakis(4aminophenyl)methane (TAM), 1,3,5-triformyl-phloroglucinol (Tp) and 4,4′-biphenyldialdehyde (BPDA).…”

“…g) Topological network of the 3D COF films after the condensation of Tp, TAM, and BPDA. Reproduced with permission [128]. Copyright 2023, Elsevier.…”

Reticular chemistry within three-dimensional covalent organic frameworks for multiple applications

“…9c). 106 Compared with TAM-BPDA thin films, TAM-Tp thin films exhibited excellent hydroxide ion transport capacity (85.3 mS cm −1 ) and significant inhibition on Zn dendrites, with a power density of 63.8 mW cm −2 and cycle life of 58 h in quasi-solid state TAM-Tp-based ZABs, and a higher power density of 111.6 mW cm −2 and longer cycle life of 600 h in aqueous TAM-Tp-based ZABs. Quasi-solid state TAM-Tp-based ZABs maintained stable work at bending angles of 0°, 60°, 120°, and 180°, and the series connection of two ZABs could light up a small LED bulb (1.7 V, 20 mA) and a LED screen (1.5 V, 100 mA), indicating their practical application in energy devices (Fig.…”