Binary carbon-based additives in LiFePO4 cathode with favorable lithium storage
A pairwise coupling of 0D Super-P (SP), 1D carbon nanotubes (CNTs), and 2D graphene nanosheets (GNs) into binary carbon-based conductive additives was used here for the LiFePO4 cathode in lithium-ion batteries. For comparison, the LiFePO4 cathode with SP, CNT, or GN unitary conductive agent was also...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2020-09-01
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| Series: | Nanotechnology Reviews |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/ntrev-2020-0071 |
| _version_ | 1819120792432017408 |
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| author | Zhang Jianye Huang Zhiyong He Chengen Zhang Jinlong Mei Peng Han Xiaoyan Wang Xianggang Yang Yingkui |
| author_facet | Zhang Jianye Huang Zhiyong He Chengen Zhang Jinlong Mei Peng Han Xiaoyan Wang Xianggang Yang Yingkui |
| author_sort | Zhang Jianye |
| collection | DOAJ |
| description | A pairwise coupling of 0D Super-P (SP), 1D carbon nanotubes (CNTs), and 2D graphene nanosheets (GNs) into binary carbon-based conductive additives was used here for the LiFePO4 cathode in lithium-ion batteries. For comparison, the LiFePO4 cathode with SP, CNT, or GN unitary conductive agent was also examined. Electrochemical test results suggest that the cathodes with binary conducting additives present greatly improved electrochemical performance than the traditional cathode system (only SP used). Especially, the LiFePO4 cathode containing 3% CNT component exhibits the highest specific capacity and the best cycling stability among all the cathodes with binary conducting additives, indicating that an appropriate amount of CNTs is critical in enhancing the conductivity and practical capacity output. However, an excess of CNTs leads to entangling with each other, hampering the uniform distribution of active materials and resulting in poor electrode performance. Furthermore, the combination of CNT and GN can effectively improve the capacity and cycling stability of the LiFePO4 cathodes due to the synergistic effect of 3D conductive networks constructed by the two. |
| first_indexed | 2024-12-22T06:26:18Z |
| format | Article |
| id | doaj.art-137a56e997fa4c8ba988e054018d2235 |
| institution | Directory Open Access Journal |
| issn | 2191-9097 |
| language | English |
| last_indexed | 2024-12-22T06:26:18Z |
| publishDate | 2020-09-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanotechnology Reviews |
| spelling | doaj.art-137a56e997fa4c8ba988e054018d22352022-12-21T18:35:50ZengDe GruyterNanotechnology Reviews2191-90972020-09-019193494410.1515/ntrev-2020-0071ntrev-2020-0071Binary carbon-based additives in LiFePO4 cathode with favorable lithium storageZhang Jianye0Huang Zhiyong1He Chengen2Zhang Jinlong3Mei Peng4Han Xiaoyan5Wang Xianggang6Yang Yingkui7Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central University for Nationalities, Wuhan 430074, ChinaHubei Engineering Technology Research Centre of Energy Polymer Materials, School of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, ChinaGraphene R&D Center, Guangdong Xigu Tanyuan New Materials Corporation Limited & South-Central University for Nationalities, Foshan 528000, ChinaGraphene R&D Center, Guangdong Xigu Tanyuan New Materials Corporation Limited & South-Central University for Nationalities, Foshan 528000, ChinaHubei Engineering Technology Research Centre of Energy Polymer Materials, School of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, ChinaKey Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central University for Nationalities, Wuhan 430074, ChinaGraphene R&D Center, Guangdong Xigu Tanyuan New Materials Corporation Limited & South-Central University for Nationalities, Foshan 528000, ChinaKey Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central University for Nationalities, Wuhan 430074, ChinaA pairwise coupling of 0D Super-P (SP), 1D carbon nanotubes (CNTs), and 2D graphene nanosheets (GNs) into binary carbon-based conductive additives was used here for the LiFePO4 cathode in lithium-ion batteries. For comparison, the LiFePO4 cathode with SP, CNT, or GN unitary conductive agent was also examined. Electrochemical test results suggest that the cathodes with binary conducting additives present greatly improved electrochemical performance than the traditional cathode system (only SP used). Especially, the LiFePO4 cathode containing 3% CNT component exhibits the highest specific capacity and the best cycling stability among all the cathodes with binary conducting additives, indicating that an appropriate amount of CNTs is critical in enhancing the conductivity and practical capacity output. However, an excess of CNTs leads to entangling with each other, hampering the uniform distribution of active materials and resulting in poor electrode performance. Furthermore, the combination of CNT and GN can effectively improve the capacity and cycling stability of the LiFePO4 cathodes due to the synergistic effect of 3D conductive networks constructed by the two.https://doi.org/10.1515/ntrev-2020-0071binary conductive agentsgraphenecarbon nanotubessuper-plithium iron phosphatelithium-ion batteries |
| spellingShingle | Zhang Jianye Huang Zhiyong He Chengen Zhang Jinlong Mei Peng Han Xiaoyan Wang Xianggang Yang Yingkui Binary carbon-based additives in LiFePO4 cathode with favorable lithium storage Nanotechnology Reviews binary conductive agents graphene carbon nanotubes super-p lithium iron phosphate lithium-ion batteries |
| title | Binary carbon-based additives in LiFePO4 cathode with favorable lithium storage |
| title_full | Binary carbon-based additives in LiFePO4 cathode with favorable lithium storage |
| title_fullStr | Binary carbon-based additives in LiFePO4 cathode with favorable lithium storage |
| title_full_unstemmed | Binary carbon-based additives in LiFePO4 cathode with favorable lithium storage |
| title_short | Binary carbon-based additives in LiFePO4 cathode with favorable lithium storage |
| title_sort | binary carbon based additives in lifepo4 cathode with favorable lithium storage |
| topic | binary conductive agents graphene carbon nanotubes super-p lithium iron phosphate lithium-ion batteries |
| url | https://doi.org/10.1515/ntrev-2020-0071 |
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