Electrochemical synthesis of carbon-metal fluoride nanocomposites as cathode materials for lithium batteries
Herein we have demonstrated an electrochemical method for the synthesis of carbon-metal fluoride nanocomposites (CMFNCs). Electrochemical intercalation of transition metal ions into graphite fluoride (CFx) resulted in the formation of CMFNCs. As a proof-of-concept, we have synthesized C-FeF2 and C-N...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-11-01
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| Series: | Electrochemistry Communications |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1388248120301971 |
| _version_ | 1818049020337061888 |
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| author | M. Helen Maximilian Fichtner M. Anji Reddy |
| author_facet | M. Helen Maximilian Fichtner M. Anji Reddy |
| author_sort | M. Helen |
| collection | DOAJ |
| description | Herein we have demonstrated an electrochemical method for the synthesis of carbon-metal fluoride nanocomposites (CMFNCs). Electrochemical intercalation of transition metal ions into graphite fluoride (CFx) resulted in the formation of CMFNCs. As a proof-of-concept, we have synthesized C-FeF2 and C-NiF2 nanocomposites by the electrochemical intercalation of Fe2+ and Ni2+ into CFx from corresponding non-aqueous electrolytes. The C-FeF2 and C-NiF2 nanocomposites synthesized by this method showed high reversible capacity and cycling stability compared to chemically synthesized analogs as cathode materials for lithium batteries. The reversible capacity of chemically synthesized C-FeF2 is 181 mAh g−1, whereas electrochemically synthesized material is 349 mAh g−1 after 20 cycles. The better cycling performance of electrochemically synthesized C-FeF2 was attributed to the homogeneous distribution of FeF2 nanoparticles within the carbon matrix enabled by the electrochemical intercalation of Fe2+. The electrochemical method described here is emission-free, cost-effective, occurs at room temperature, and extendable to the synthesis of several other CMFNCs. Moreover, it might provide new avenues for the synthesis of advanced functional materials. |
| first_indexed | 2024-12-10T10:30:56Z |
| format | Article |
| id | doaj.art-4c12d5e6b1e243eca1b6ebd99b85f28c |
| institution | Directory Open Access Journal |
| issn | 1388-2481 |
| language | English |
| last_indexed | 2024-12-10T10:30:56Z |
| publishDate | 2020-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Electrochemistry Communications |
| spelling | doaj.art-4c12d5e6b1e243eca1b6ebd99b85f28c2022-12-22T01:52:34ZengElsevierElectrochemistry Communications1388-24812020-11-01120106846Electrochemical synthesis of carbon-metal fluoride nanocomposites as cathode materials for lithium batteriesM. Helen0Maximilian Fichtner1M. Anji Reddy2College of Engineering, Swansea University, Fabian Way, Swansea SA1 8EN, United KingdomHelmholtz Institute Ulm (HIU), Electrochemical Energy Storage, Helmholtzstraße 11, 89081 Ulm, Germany; Institute of Nanotechnology, Karlsruhe Institute of Technology, P.O. Box 3640, D-76021 Karlsruhe, GermanyCollege of Engineering, Swansea University, Fabian Way, Swansea SA1 8EN, United Kingdom; Corresponding author.Herein we have demonstrated an electrochemical method for the synthesis of carbon-metal fluoride nanocomposites (CMFNCs). Electrochemical intercalation of transition metal ions into graphite fluoride (CFx) resulted in the formation of CMFNCs. As a proof-of-concept, we have synthesized C-FeF2 and C-NiF2 nanocomposites by the electrochemical intercalation of Fe2+ and Ni2+ into CFx from corresponding non-aqueous electrolytes. The C-FeF2 and C-NiF2 nanocomposites synthesized by this method showed high reversible capacity and cycling stability compared to chemically synthesized analogs as cathode materials for lithium batteries. The reversible capacity of chemically synthesized C-FeF2 is 181 mAh g−1, whereas electrochemically synthesized material is 349 mAh g−1 after 20 cycles. The better cycling performance of electrochemically synthesized C-FeF2 was attributed to the homogeneous distribution of FeF2 nanoparticles within the carbon matrix enabled by the electrochemical intercalation of Fe2+. The electrochemical method described here is emission-free, cost-effective, occurs at room temperature, and extendable to the synthesis of several other CMFNCs. Moreover, it might provide new avenues for the synthesis of advanced functional materials.http://www.sciencedirect.com/science/article/pii/S1388248120301971CFxMetal fluoridesC-FeF2 and C-NiF2Lithium batteriesElectrochemical synthesis |
| spellingShingle | M. Helen Maximilian Fichtner M. Anji Reddy Electrochemical synthesis of carbon-metal fluoride nanocomposites as cathode materials for lithium batteries Electrochemistry Communications CFx Metal fluorides C-FeF2 and C-NiF2 Lithium batteries Electrochemical synthesis |
| title | Electrochemical synthesis of carbon-metal fluoride nanocomposites as cathode materials for lithium batteries |
| title_full | Electrochemical synthesis of carbon-metal fluoride nanocomposites as cathode materials for lithium batteries |
| title_fullStr | Electrochemical synthesis of carbon-metal fluoride nanocomposites as cathode materials for lithium batteries |
| title_full_unstemmed | Electrochemical synthesis of carbon-metal fluoride nanocomposites as cathode materials for lithium batteries |
| title_short | Electrochemical synthesis of carbon-metal fluoride nanocomposites as cathode materials for lithium batteries |
| title_sort | electrochemical synthesis of carbon metal fluoride nanocomposites as cathode materials for lithium batteries |
| topic | CFx Metal fluorides C-FeF2 and C-NiF2 Lithium batteries Electrochemical synthesis |
| url | http://www.sciencedirect.com/science/article/pii/S1388248120301971 |
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