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Heteroatom–doped hollow carbon microspheres based on amphiphilic supramolecular vesicles and highly crosslinked polyphosphazene for high performance supercapacitor electrode materials
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Chen, Kuiyong, Huang, Xiaobin, Wan, Chaoying and Liu, Hong (2016) Heteroatom–doped hollow carbon microspheres based on amphiphilic supramolecular vesicles and highly crosslinked polyphosphazene for high performance supercapacitor electrode materials. Electrochimica Acta, 222 . pp. 543-550. doi:10.1016/j.electacta.2016.11.007 ISSN 0013-4686.
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Official URL: http://dx.doi.org/10.1016/j.electacta.2016.11.007
Abstract
Hybrid hollow polymeric microspheres (HPMSs) are synthesized by encapsulating the supramolecular vesicles with polyphosphazene through a rapid one-step polycondensation reaction. Subsequent carbonization treatments of the HPMSs lead to corresponding hollow carbon microspheres (HCMSs) with well-preserved geometry. The sizes of HPMSs and HCMSs are controlled by the vesicles, which is directly determined by the feeding ratio of the assembly units. Electrodes based on HCMSs showed a specific capacitance of 314.6 F/g at a current density of 0.2 A/g in 6 M KOH electrolyte, 180.0 F/g at a current density of 30 A/g, and high stability of 98.2% of capacity retention after 2000 cycles. Both the high surface area and high heteroatoms level of HCMSs contribute to the excellent capacitive performance. Meanwhile, the hollow carbon structure ensured the satisfactory capacitive performance by increasing utilization efficiency of the surface area as well as achieving short diffusion paths for electrolyte ions.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TP Chemical technology |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Library of Congress Subject Headings (LCSH): | Polyphosphazenes, Supercapacitors, Carbon | ||||||||
Journal or Publication Title: | Electrochimica Acta | ||||||||
Publisher: | Pergamon | ||||||||
ISSN: | 0013-4686 | ||||||||
Official Date: | 20 December 2016 | ||||||||
Dates: |
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Volume: | 222 | ||||||||
Page Range: | pp. 543-550 | ||||||||
DOI: | 10.1016/j.electacta.2016.11.007 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 14 November 2016 | ||||||||
Date of first compliant Open Access: | 11 November 2017 | ||||||||
Funder: | Guo jia zi ran ke xue ji jin wei yuan hui (China) [National Natural Science Foundation of China] (NSFC), Shanghai Shi ke xue ji shu wei yuan hui [Shanghai Science and Technology Commission] | ||||||||
Grant number: | 21274092 (NSF), 51133003(NSF), 61376003(NSF), 91441205 (NSF), 10ZR1416100 (Shanghai Shi ke xue ji shu wei yuan hui) |
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