Orthoquinone–Based Covalent Organic Frameworks with Ordered Channel Structures for Ultrahigh Performance Aqueous Zinc–Organic Batteries
Nankai University · Wenzhou University
Abstract
Abstract Elaborate molecular design on cathodes is of great importance for rechargeable aqueous zinc–organic batteries’ performance elevation. Herein, we design a novel orthoquinone‐based covalent organic framework with an ordered channel structures (BT‐PTO COF) cathode for an ultrahigh performance aqueous zinc–organic battery. The ordered channel structure facilitates ions transfer and makes the COF follow a redox pseudocapacitance mechanism. Thus, it delivers a high reversible capacity of 225 mAh g −1 at 0.1 A g −1 and an exceptional long‐term cyclability (retention rate 98.0 % at 5 A g −1 (≈18 C) after 10 000 cycles). Moreover, a co‐insertion mechanism with Zn 2+ first followed by two H + is uncovered for…
Citation impact
- FWCI
- 25.57
- Percentile
- 100%
- References
- 89
Authors
10Topics & keywords
- Aqueous solution
- Pseudocapacitance
- Cathode
- Materials science
- Covalent organic framework
- Battery (electricity)
- Organic radical battery
- Zinc
- Affordable and clean energy