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- Title
Interface Engineering of Biomass‐Derived Carbon used as Ultrahigh‐Energy‐Density and Practical Mass‐Loading Supercapacitor Electrodes.
- Authors
Chen, Ruwei; Tang, Hao; He, Peng; Zhang, Wei; Dai, Yuhang; Zong, Wei; Guo, Fei; He, Guanjie; Wang, Xiaohui
- Abstract
The development of flexible electrodes with high mass loading and efficient electron/ion transport is of great significance but still remains the challenge of innovating suitable electrode structures for high energy density application. Herein, for the first time, lignosulfonate‐derived N/S‐co‐doped graphene‐like carbon is in situ formed within an interface engineered cellulose textile through a sacrificial template method. Both experimental and theoretical calculations disclose that the formed pomegranate‐like structure with continuous conductive pathways and porous characteristics allows sufficient ion/electron transport throughout the entire structures. As a result, the obtained flexible electrode delivers a remarkable integrated capacitance of 6534 mF cm−2 (335.1 F g−1) and a superior stability at an industrially applicable mass loading of 19.5 mg cm−2. A pseudocapacitive cathode with ultrahigh capacitance of 7000 mF cm−2 can also be obtained based on the same electrode structure engineering. The as‐assembled asymmetric supercapacitor achieves a high areal capacitance of 3625 mF cm−2, and a maximum energy density of 1.06 mWh cm−2, outperforms most of other reported high‐loading supercapacitors. This synthesis method and structural engineering strategy can provide materials design concepts and a wide range of applications in the fields of energy storage beyond supercapacitors.
- Subjects
SUPERCAPACITOR electrodes; ENERGY density; ENGINEERING; STRUCTURAL engineers; STRUCTURAL engineering; ELECTRON transport; ENERGY storage
- Publication
Advanced Functional Materials, 2023, Vol 33, Issue 8, p1
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.202212078