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N-carbon from waste tea as efficient anode electrode material in lithium ion batteries

Title
N-carbon from waste tea as efficient anode electrode material in lithium ion batteries
Author(s)
Chaudhari, Nitin KadubaBhattacharjya, DhrubajyotiKim, HernYu, Jong SungChung, Wook Jin
Issued Date
2017-03
Citation
Journal of Nanoscience and Nanotechnology, v.17, no.3, pp.1838 - 1846
Type
Article
Author Keywords
CarbonTeaLithium-Ion BatteryHeteroatomsWaste
Keywords
HIGH-PERFORMANCEPOROUS CARBONACTIVATED CARBONHIGH-CAPACITYGRAPHENE NANOSHEETSASSISTED SYNTHESISNICKEL-OXIDELI STORAGEIN-SITUNITROGEN
ISSN
1533-4880
Abstract
Nanostructured carbon having nitrogen as heteroatom was synthesized from waste tea, a cheap and abundant waste generated around the world. The synthesis process is simple, environmental being one-step pyrolysis in inert atmosphere. The carbon synthesized at 800°C (WTC-800) has mesh like morphology with abundantmesopores. The BET analysis reveals mesoporous nature with specific surface area of 384 m2g-1. The porous morphology was found to diminish with increase in pyrolysis temperature. XPS analysis reveals the presence of 1.8-2.5% N-content with predominantly graphitic-N. As-synthesized carbons are investigated as anode material for Li-ion battery. The mesoporous structure and N doping endowed WTC-800 with high reversible capacity up to 567 mAhg-1 at 0.1 C rate, much higher than commercial graphite based anode. Furthermore, the charge discharge process of WTC-800 is not only stable and reversible at high current rate (49% retention at 1 C rate), but also stable up to 100 cycles (78% retention). Relation of capacitive performance with surface area, porosity and N doping is studied and explained promptly. Combined with easy synthesis method, mesoporous structure, inherent N content with abundantly available waste precursor made this carbon material as suitable candidate for electrode materials in Li ion battery applications. Copyright © 2017 American Scientific Publishers All rights reserved.
URI
http://hdl.handle.net/20.500.11750/56370
DOI
10.1166/jnn.2017.12933
Publisher
American Scientific Publishers
Related Researcher
  • 유종성 Yu, Jong-Sung
  • Research Interests Materials chemistry; nanomaterials; electrochemistry; carbon and porous materials; fuel cell; battery; supercapacitor; sensor and photochemical catalyst
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Department of Energy Science and Engineering Light, Salts and Water Research Group 1. Journal Articles

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