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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
Authors
Chaudhari, N.K.[Chaudhari, Nitin Kaduba]Bhattacharjya, D.[Bhattacharjya, Dhrubajyoti]Kim, H.[Kim, Hern]Yu, J.-S.[Yu, Jong Sung]Chung, W.-J.[Chung, Wook Jin]
DGIST Authors
Yu, J.-S.[Yu, Jong Sung]
Issue Date
2017
Citation
Journal of Nanoscience and Nanotechnology, 17(3), 1838-1846
Type
Article
Article Type
Article
Keywords
AnodesCapacitive PerformanceCarbonCharge-Discharge ProcessElectric BatteriesElectric DischargesElectrodesHeteroatomsHigh Reversible CapacitiesIonsLithiumLithium-Ion BatteriesLithium-Ion BatteryLithium AlloysLithium CompoundsMesoporous MaterialsMesoporous StructuresNano-Structured Carbonsoffice BuildingsPyrolysisPyrolysis TemperatureSecondary BatteriesSynthesized CarbonTeaWasteWastes
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/20.500.11750/2132
DOI
10.1166/jnn.2017.12933
Publisher
American Scientific Publishers
Related Researcher
  • Author Yu, Jong Sung Light, Salts and Water Research Group
  • Research Interests Materials chemistry; nanomaterials; electrochemistry; carbon and porous materials; fuel cell; battery; supercapacitor; sensor and photochemical catalyst
Files:
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Collection:
Energy Science and EngineeringETC1. Journal Articles
ETC1. Journal Articles


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