Premium
High Volumetric Capacitance, Ultralong Life Supercapacitors Enabled by Waxberry‐Derived Hierarchical Porous Carbon Materials
Author(s) -
Dong Xiaomei,
Jin Huile,
Wang Rongyue,
Zhang Jingjing,
Feng Xin,
Yan Chengzhan,
Chen Suqin,
Wang Shun,
Wang Jichang,
Lu Jun
Publication year - 2018
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201702695
Subject(s) - supercapacitor , materials science , capacitance , carbon fibers , energy storage , nanosheet , capacitive sensing , chemical engineering , nanotechnology , porosity , microstructure , electrode , composite material , power (physics) , electrical engineering , chemistry , physics , engineering , quantum mechanics , composite number
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 Fe 2 O 3 /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 Fe 2 O 3 /FeS. Overall, this research presents a new avenue for developing the next generation of sustainable high‐performance energy storage device.