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- Title
High Volumetric Capacitance, Ultralong Life Supercapacitors Enabled by Waxberry‐Derived Hierarchical Porous Carbon Materials.
- Authors
Dong, Xiaomei; Jin, Huile; Wang, Rongyue; Zhang, Jingjing; Feng, Xin; Yan, Chengzhan; Chen, Suqin; Wang, Shun; Wang, Jichang; Lu, Jun
- Abstract
Abstract: Supercapacitors with fast charge/discharge rate and long cycling stability (>50 000 cycles) are attractive for energy storage and mobile power supply. In this paper, a facile strategy is developed to fabricate an Fe2O3/FeS‐decorated N, S‐codoped hierarchical porous carbon hybrid. Its microstructure and compositions can be readily controlled through adjusting the hydrothermal reaction between waxberry and iron sulfate. The constructed supercapacitors with the as‐prepared carbon materials from this reaction are able to exhibit outstanding capacitive performance with a superfast charge/discharge rate (<1 s), ultralong cycle life (>50 000 cycles, 80 A g−1), ultrahigh volumetric capacitance (1320.4 F cm−3, 0.1 A g−1), and high energy density (100.9 W h kg−1, 221.9 W h L−1). The outstanding performance makes it one of the best biomass‐derived supercapacitors. The superior capacitive behavior is likely to arise from the N and S codoping on the surface/edge/skeleton of the carbon microspheres and nanosheet composites coupled with the fast redox reaction of Fe2O3/FeS. Overall, this research presents a new avenue for developing the next generation of sustainable high‐performance energy storage device.
- Subjects
ELECTRIC capacity; SUPERCAPACITORS; ENERGY storage; SYMPHORICARPOS albus; IRON sulfates
- Publication
Advanced Energy Materials, 2018, Vol 8, Issue 11, p1
- ISSN
1614-6832
- Publication type
Article
- DOI
10.1002/aenm.201702695