Thermodynamics of Lithium Intercalation in Randomly Oriented High Graphene Carbon
This paper covers details of systematic investigation of the thermodynamics (entropy and enthalpy) of intercalation associated with lithium ion in a structurally novel carbon, called Randomly Oriented High Graphene (ROHG) carbon and graphite. Equilibrated OCV (Open Circuit Voltage) versus temperatur...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | International Journal of Electrochemistry |
| Online Access: | http://dx.doi.org/10.1155/2017/5391794 |
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| author | Rahul S. Kadam Kishor P. Gadkaree |
| author_facet | Rahul S. Kadam Kishor P. Gadkaree |
| author_sort | Rahul S. Kadam |
| collection | DOAJ |
| description | This paper covers details of systematic investigation of the thermodynamics (entropy and enthalpy) of intercalation associated with lithium ion in a structurally novel carbon, called Randomly Oriented High Graphene (ROHG) carbon and graphite. Equilibrated OCV (Open Circuit Voltage) versus temperature relationship is investigated to determine the thermodynamic changes with the lithium intercalation. ROHG carbon shows entropy of 9.36 J·mol−1·K−1 and shows no dependency on the inserted lithium concentration. Graphite shows initial entropy of 84.27 J·mol−1·K−1 and shows a strong dependence on lithium concentration. ROHG carbon (from −90.85 kJ mol−1 to −2.88 kJ mol−1) shows gradual change in the slope of enthalpy versus lithium ion concentration plot compared to graphite (−48.98 kJ mol−1 to 1.84 kJ mol−1). The study clearly shows that a lower amount of energy is required for the lithium ion intercalation into the ROHG structure compared to graphite structure. Randomly oriented graphene platelet cluster structure of ROHG carbon makes it easier for the intercalation or deintercalation of lithium ion. The ease of intercalation and the small cluster structure of ROHG as opposed to the long linear platelet structure of graphite lead to higher rates of the charge-discharge process for ROHG, when used as an electrode material in electrochemical applications. |
| format | Article |
| id | doaj-art-ef23b2101e7b4622b09826ef02f6dde9 |
| institution | OA Journals |
| issn | 2090-3529 2090-3537 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Electrochemistry |
| spelling | doaj-art-ef23b2101e7b4622b09826ef02f6dde92025-08-20T02:22:25ZengWileyInternational Journal of Electrochemistry2090-35292090-35372017-01-01201710.1155/2017/53917945391794Thermodynamics of Lithium Intercalation in Randomly Oriented High Graphene CarbonRahul S. Kadam0Kishor P. Gadkaree1Corning Incorporated, 1 Science Drive, Painted Post, NY 14870, USACorning Incorporated, 1 Science Drive, Painted Post, NY 14870, USAThis paper covers details of systematic investigation of the thermodynamics (entropy and enthalpy) of intercalation associated with lithium ion in a structurally novel carbon, called Randomly Oriented High Graphene (ROHG) carbon and graphite. Equilibrated OCV (Open Circuit Voltage) versus temperature relationship is investigated to determine the thermodynamic changes with the lithium intercalation. ROHG carbon shows entropy of 9.36 J·mol−1·K−1 and shows no dependency on the inserted lithium concentration. Graphite shows initial entropy of 84.27 J·mol−1·K−1 and shows a strong dependence on lithium concentration. ROHG carbon (from −90.85 kJ mol−1 to −2.88 kJ mol−1) shows gradual change in the slope of enthalpy versus lithium ion concentration plot compared to graphite (−48.98 kJ mol−1 to 1.84 kJ mol−1). The study clearly shows that a lower amount of energy is required for the lithium ion intercalation into the ROHG structure compared to graphite structure. Randomly oriented graphene platelet cluster structure of ROHG carbon makes it easier for the intercalation or deintercalation of lithium ion. The ease of intercalation and the small cluster structure of ROHG as opposed to the long linear platelet structure of graphite lead to higher rates of the charge-discharge process for ROHG, when used as an electrode material in electrochemical applications.http://dx.doi.org/10.1155/2017/5391794 |
| spellingShingle | Rahul S. Kadam Kishor P. Gadkaree Thermodynamics of Lithium Intercalation in Randomly Oriented High Graphene Carbon International Journal of Electrochemistry |
| title | Thermodynamics of Lithium Intercalation in Randomly Oriented High Graphene Carbon |
| title_full | Thermodynamics of Lithium Intercalation in Randomly Oriented High Graphene Carbon |
| title_fullStr | Thermodynamics of Lithium Intercalation in Randomly Oriented High Graphene Carbon |
| title_full_unstemmed | Thermodynamics of Lithium Intercalation in Randomly Oriented High Graphene Carbon |
| title_short | Thermodynamics of Lithium Intercalation in Randomly Oriented High Graphene Carbon |
| title_sort | thermodynamics of lithium intercalation in randomly oriented high graphene carbon |
| url | http://dx.doi.org/10.1155/2017/5391794 |
| work_keys_str_mv | AT rahulskadam thermodynamicsoflithiumintercalationinrandomlyorientedhighgraphenecarbon AT kishorpgadkaree thermodynamicsoflithiumintercalationinrandomlyorientedhighgraphenecarbon |