High-purity few-layer graphene from plasma pyrolysis of methane as conductive additive for LiFePO4 lithium ion battery
Graphene is one of the most attractive materials because of its outstanding properties. Here we report a straightforward and environmentally friendly process, in which the few-layer graphene is continuously prepared in gas phase by one-step pyrolysis of methane by alternative-current arc plasma unde...
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doaj-95f53a31c81f4ebca60cec0335d218372020-11-25T03:43:54ZengElsevierJournal of Materials Research and Technology2238-78542020-09-01951000410015High-purity few-layer graphene from plasma pyrolysis of methane as conductive additive for LiFePO4 lithium ion batteryFeng Wang0Fangfang Wang1Ruoyu Hong2Xuesong Lv3Ying Zheng4College of Chemical Engineering, Fuzhou University, Fuzhou, 350108, ChinaCollege of Chemical Engineering, Fuzhou University, Fuzhou, 350108, ChinaCollege of Chemical Engineering, Fuzhou University, Fuzhou, 350108, China; Corresponding author.College of Chemical Engineering, Fuzhou University, Fuzhou, 350108, ChinaDepartment of Chemical and Biochemical Engineering, Western University, London, Ontario N6A 5B9, CanadaGraphene is one of the most attractive materials because of its outstanding properties. Here we report a straightforward and environmentally friendly process, in which the few-layer graphene is continuously prepared in gas phase by one-step pyrolysis of methane by alternative-current arc plasma under substrate free and atmospheric conditions. The graphene is generated in high purity with the yield of more than 2 g/h. No further operations such as centrifugation, purification, sonication, and drying are needed. The synthesized graphene powder mainly consists of 1–3 layered flakes. The electrochemical performance of the graphene as the cathode conductive filler for LiFePO4 lithium ion batteries is investigated. The most effective electron transporting network in lithium ion batteries is obtained under 2% of graphene, together with 1% of carbon black. Moreover, the addition of graphene increases the specific capacity of the cathode and shows a good rate performance.http://www.sciencedirect.com/science/article/pii/S2238785420314733Few-layer graphenePlasma pyrolysisLithium iron phosphateElectrochemical performance |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Feng Wang Fangfang Wang Ruoyu Hong Xuesong Lv Ying Zheng |
spellingShingle |
Feng Wang Fangfang Wang Ruoyu Hong Xuesong Lv Ying Zheng High-purity few-layer graphene from plasma pyrolysis of methane as conductive additive for LiFePO4 lithium ion battery Journal of Materials Research and Technology Few-layer graphene Plasma pyrolysis Lithium iron phosphate Electrochemical performance |
author_facet |
Feng Wang Fangfang Wang Ruoyu Hong Xuesong Lv Ying Zheng |
author_sort |
Feng Wang |
title |
High-purity few-layer graphene from plasma pyrolysis of methane as conductive additive for LiFePO4 lithium ion battery |
title_short |
High-purity few-layer graphene from plasma pyrolysis of methane as conductive additive for LiFePO4 lithium ion battery |
title_full |
High-purity few-layer graphene from plasma pyrolysis of methane as conductive additive for LiFePO4 lithium ion battery |
title_fullStr |
High-purity few-layer graphene from plasma pyrolysis of methane as conductive additive for LiFePO4 lithium ion battery |
title_full_unstemmed |
High-purity few-layer graphene from plasma pyrolysis of methane as conductive additive for LiFePO4 lithium ion battery |
title_sort |
high-purity few-layer graphene from plasma pyrolysis of methane as conductive additive for lifepo4 lithium ion battery |
publisher |
Elsevier |
series |
Journal of Materials Research and Technology |
issn |
2238-7854 |
publishDate |
2020-09-01 |
description |
Graphene is one of the most attractive materials because of its outstanding properties. Here we report a straightforward and environmentally friendly process, in which the few-layer graphene is continuously prepared in gas phase by one-step pyrolysis of methane by alternative-current arc plasma under substrate free and atmospheric conditions. The graphene is generated in high purity with the yield of more than 2 g/h. No further operations such as centrifugation, purification, sonication, and drying are needed. The synthesized graphene powder mainly consists of 1–3 layered flakes. The electrochemical performance of the graphene as the cathode conductive filler for LiFePO4 lithium ion batteries is investigated. The most effective electron transporting network in lithium ion batteries is obtained under 2% of graphene, together with 1% of carbon black. Moreover, the addition of graphene increases the specific capacity of the cathode and shows a good rate performance. |
topic |
Few-layer graphene Plasma pyrolysis Lithium iron phosphate Electrochemical performance |
url |
http://www.sciencedirect.com/science/article/pii/S2238785420314733 |
work_keys_str_mv |
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