Pyrolyzed Bacterial Cellulose as the Backbone of the Cathode Catalyst-CoFe<sub>2</sub>O<sub>4</sub> for the Li-O<sub>2</sub> Battery
In this paper, CoFe<sub>2</sub>O<sub>4</sub>@pyrolyzed bacterial cellulose (CFO@PBC) nanocomposites were synthesized by a hydrothermal process and an in situ composite technique as the cathode for rechargeable Li-O<sub>2</sub> batteries (LOB). CoFe<sub>2<...
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MDPI AG
2022-08-01
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| Online Access: | https://www.mdpi.com/2073-4352/12/8/1165 |
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| author | Xiangjun Wang Yongqing Chi Peng Wu Wen Liu |
| author_facet | Xiangjun Wang Yongqing Chi Peng Wu Wen Liu |
| author_sort | Xiangjun Wang |
| collection | DOAJ |
| description | In this paper, CoFe<sub>2</sub>O<sub>4</sub>@pyrolyzed bacterial cellulose (CFO@PBC) nanocomposites were synthesized by a hydrothermal process and an in situ composite technique as the cathode for rechargeable Li-O<sub>2</sub> batteries (LOB). CoFe<sub>2</sub>O<sub>4</sub>@Ketjenblack (CFO@KB) were prepared in the same way as the comparison. The as-prepared materials were characterized by SEM, XRD, and BET. The LOB with CFO@PBC-3 showed a maximum initial discharge capacity of 2660 mAh g<sup>−1</sup> (electrode) at the current density of 100 mAg<sup>−1</sup>, while the mass ratio of CoFe<sub>2</sub>O<sub>4</sub> and pyrolyzed bacterial cellulose was 3. The cyclic voltammetry of the CFO@PBC nanocomposite electrodes was investigated at 0.1 mVs<sup>−1</sup> in the voltage window of 2.0–4.5 V. With the limited capacity of 640 mAh g<sup>−1</sup> (electrode), the CFO@PBC-3 electrode showed the best cycle stability and higher cutoff voltage of discharging. The pyrolyzed bacterial cellulose, as the fibrous 3D backbone in CFO@PBC nanocomposite electrodes, produced better results than the CFO@KB. |
| first_indexed | 2024-03-09T04:34:29Z |
| format | Article |
| id | doaj.art-02d5ef6f4d634c959a83e845a9331acf |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-09T04:34:29Z |
| publishDate | 2022-08-01 |
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| series | Crystals |
| spelling | doaj.art-02d5ef6f4d634c959a83e845a9331acf2023-12-03T13:30:24ZengMDPI AGCrystals2073-43522022-08-01128116510.3390/cryst12081165Pyrolyzed Bacterial Cellulose as the Backbone of the Cathode Catalyst-CoFe<sub>2</sub>O<sub>4</sub> for the Li-O<sub>2</sub> BatteryXiangjun Wang0Yongqing Chi1Peng Wu2Wen Liu3School of Chemical and Biological Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, ChinaSchool of Chemical and Biological Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, ChinaComputer Engineering Department, Taiyuan Institute of Technology, Taiyuan 030008, ChinaSchool of Chemical and Biological Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, ChinaIn this paper, CoFe<sub>2</sub>O<sub>4</sub>@pyrolyzed bacterial cellulose (CFO@PBC) nanocomposites were synthesized by a hydrothermal process and an in situ composite technique as the cathode for rechargeable Li-O<sub>2</sub> batteries (LOB). CoFe<sub>2</sub>O<sub>4</sub>@Ketjenblack (CFO@KB) were prepared in the same way as the comparison. The as-prepared materials were characterized by SEM, XRD, and BET. The LOB with CFO@PBC-3 showed a maximum initial discharge capacity of 2660 mAh g<sup>−1</sup> (electrode) at the current density of 100 mAg<sup>−1</sup>, while the mass ratio of CoFe<sub>2</sub>O<sub>4</sub> and pyrolyzed bacterial cellulose was 3. The cyclic voltammetry of the CFO@PBC nanocomposite electrodes was investigated at 0.1 mVs<sup>−1</sup> in the voltage window of 2.0–4.5 V. With the limited capacity of 640 mAh g<sup>−1</sup> (electrode), the CFO@PBC-3 electrode showed the best cycle stability and higher cutoff voltage of discharging. The pyrolyzed bacterial cellulose, as the fibrous 3D backbone in CFO@PBC nanocomposite electrodes, produced better results than the CFO@KB.https://www.mdpi.com/2073-4352/12/8/1165pyrolyzed bacterial celluloseLOBcutoff voltagevoltage gap |
| spellingShingle | Xiangjun Wang Yongqing Chi Peng Wu Wen Liu Pyrolyzed Bacterial Cellulose as the Backbone of the Cathode Catalyst-CoFe<sub>2</sub>O<sub>4</sub> for the Li-O<sub>2</sub> Battery Crystals pyrolyzed bacterial cellulose LOB cutoff voltage voltage gap |
| title | Pyrolyzed Bacterial Cellulose as the Backbone of the Cathode Catalyst-CoFe<sub>2</sub>O<sub>4</sub> for the Li-O<sub>2</sub> Battery |
| title_full | Pyrolyzed Bacterial Cellulose as the Backbone of the Cathode Catalyst-CoFe<sub>2</sub>O<sub>4</sub> for the Li-O<sub>2</sub> Battery |
| title_fullStr | Pyrolyzed Bacterial Cellulose as the Backbone of the Cathode Catalyst-CoFe<sub>2</sub>O<sub>4</sub> for the Li-O<sub>2</sub> Battery |
| title_full_unstemmed | Pyrolyzed Bacterial Cellulose as the Backbone of the Cathode Catalyst-CoFe<sub>2</sub>O<sub>4</sub> for the Li-O<sub>2</sub> Battery |
| title_short | Pyrolyzed Bacterial Cellulose as the Backbone of the Cathode Catalyst-CoFe<sub>2</sub>O<sub>4</sub> for the Li-O<sub>2</sub> Battery |
| title_sort | pyrolyzed bacterial cellulose as the backbone of the cathode catalyst cofe sub 2 sub o sub 4 sub for the li o sub 2 sub battery |
| topic | pyrolyzed bacterial cellulose LOB cutoff voltage voltage gap |
| url | https://www.mdpi.com/2073-4352/12/8/1165 |
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