Improving Effect of Graphene on Electrochemical Properties of Fe<sub>2</sub>O<sub>3</sub> Anode Materials
Transition metal oxides have a high initial charge-discharge capacity of 800–1000 mAh/g, the electrochemical performance, cyclic performance and rate performance of the composite of transition metal oxide and graphene have been improved due to the unique two-dimensional structure and excellent elect...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-03-01
|
| Series: | Metals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4701/12/4/593 |
| _version_ | 1827627635659767808 |
|---|---|
| author | Guanglin Zhu Bo Gao Ganfeng Tu Haifeng Liu Ming Wang |
| author_facet | Guanglin Zhu Bo Gao Ganfeng Tu Haifeng Liu Ming Wang |
| author_sort | Guanglin Zhu |
| collection | DOAJ |
| description | Transition metal oxides have a high initial charge-discharge capacity of 800–1000 mAh/g, the electrochemical performance, cyclic performance and rate performance of the composite of transition metal oxide and graphene have been improved due to the unique two-dimensional structure and excellent electrical conductivity of graphene. In this paper, iron oxides materials with different morphs were prepared by different hydrothermal reaction temperatures, and rGO/Fe<sub>2</sub>O<sub>3</sub>-175 °C composites with different graphene ratios were synthesized and used in the anode of lithium ion batteries. The results show that nanorod-shaped Fe<sub>2</sub>O<sub>3</sub> had better electrochemical performance than spherical Fe<sub>2</sub>O<sub>3</sub>. 0.2rGO/Fe<sub>2</sub>O<sub>3</sub>-175 °C had the best cyclic performance, the first cyclic discharge capacity reaches 1372 mAh/g under the current density of 100 mA/g, and the cyclic reversible capacity remained at about 435 mAh/g after 50 cycles, illustrating that nanorods Fe<sub>2</sub>O<sub>3</sub> and graphene composites can greatly buffer the volume expansion of Fe<sub>2</sub>O<sub>3</sub>. |
| first_indexed | 2024-03-09T13:18:51Z |
| format | Article |
| id | doaj.art-cd83038ad97946bb833bbdc42c130032 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T13:18:51Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-cd83038ad97946bb833bbdc42c1300322023-11-30T21:32:46ZengMDPI AGMetals2075-47012022-03-0112459310.3390/met12040593Improving Effect of Graphene on Electrochemical Properties of Fe<sub>2</sub>O<sub>3</sub> Anode MaterialsGuanglin Zhu0Bo Gao1Ganfeng Tu2Haifeng Liu3Ming Wang4Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), Northeastern University, Shenyang 110819, ChinaKey Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), Northeastern University, Shenyang 110819, ChinaKey Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), Northeastern University, Shenyang 110819, ChinaKey Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), Northeastern University, Shenyang 110819, ChinaKey Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), Northeastern University, Shenyang 110819, ChinaTransition metal oxides have a high initial charge-discharge capacity of 800–1000 mAh/g, the electrochemical performance, cyclic performance and rate performance of the composite of transition metal oxide and graphene have been improved due to the unique two-dimensional structure and excellent electrical conductivity of graphene. In this paper, iron oxides materials with different morphs were prepared by different hydrothermal reaction temperatures, and rGO/Fe<sub>2</sub>O<sub>3</sub>-175 °C composites with different graphene ratios were synthesized and used in the anode of lithium ion batteries. The results show that nanorod-shaped Fe<sub>2</sub>O<sub>3</sub> had better electrochemical performance than spherical Fe<sub>2</sub>O<sub>3</sub>. 0.2rGO/Fe<sub>2</sub>O<sub>3</sub>-175 °C had the best cyclic performance, the first cyclic discharge capacity reaches 1372 mAh/g under the current density of 100 mA/g, and the cyclic reversible capacity remained at about 435 mAh/g after 50 cycles, illustrating that nanorods Fe<sub>2</sub>O<sub>3</sub> and graphene composites can greatly buffer the volume expansion of Fe<sub>2</sub>O<sub>3</sub>.https://www.mdpi.com/2075-4701/12/4/593iron oxidesgrapheneanodelithium ion batterieselectrochemical performance |
| spellingShingle | Guanglin Zhu Bo Gao Ganfeng Tu Haifeng Liu Ming Wang Improving Effect of Graphene on Electrochemical Properties of Fe<sub>2</sub>O<sub>3</sub> Anode Materials Metals iron oxides graphene anode lithium ion batteries electrochemical performance |
| title | Improving Effect of Graphene on Electrochemical Properties of Fe<sub>2</sub>O<sub>3</sub> Anode Materials |
| title_full | Improving Effect of Graphene on Electrochemical Properties of Fe<sub>2</sub>O<sub>3</sub> Anode Materials |
| title_fullStr | Improving Effect of Graphene on Electrochemical Properties of Fe<sub>2</sub>O<sub>3</sub> Anode Materials |
| title_full_unstemmed | Improving Effect of Graphene on Electrochemical Properties of Fe<sub>2</sub>O<sub>3</sub> Anode Materials |
| title_short | Improving Effect of Graphene on Electrochemical Properties of Fe<sub>2</sub>O<sub>3</sub> Anode Materials |
| title_sort | improving effect of graphene on electrochemical properties of fe sub 2 sub o sub 3 sub anode materials |
| topic | iron oxides graphene anode lithium ion batteries electrochemical performance |
| url | https://www.mdpi.com/2075-4701/12/4/593 |
| work_keys_str_mv | AT guanglinzhu improvingeffectofgrapheneonelectrochemicalpropertiesoffesub2subosub3subanodematerials AT bogao improvingeffectofgrapheneonelectrochemicalpropertiesoffesub2subosub3subanodematerials AT ganfengtu improvingeffectofgrapheneonelectrochemicalpropertiesoffesub2subosub3subanodematerials AT haifengliu improvingeffectofgrapheneonelectrochemicalpropertiesoffesub2subosub3subanodematerials AT mingwang improvingeffectofgrapheneonelectrochemicalpropertiesoffesub2subosub3subanodematerials |