Operando investigation on the fast two-phase transition kinetics of LiFePO4/C composite cathodes with carbon additives for lithium-ion batteries
In this study, we demonstrate the effect of adding one-dimensional (1D) vapor-grown carbon fiber (VGCF) as a carbon additive to increase the electronic conductivity of LiFePO4 cathode. Because, the 1D VGCF structure can provide rapid and long-pathways for electron transfer and regulate a better phas...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English English |
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Elsevier Ltd
2022
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| Online Access: | http://umpir.ump.edu.my/id/eprint/42685/ http://umpir.ump.edu.my/id/eprint/42685/1/Operando%20investigation%20on%20the%20fast%20two-phase%20transition%20kinetics.pdf http://umpir.ump.edu.my/id/eprint/42685/2/Operando%20investigation%20on%20the%20fast%20two-phase%20transition%20kinetics%20of%20LiFePO4_C%20composite%20cathodes%20with%20carbon%20additives%20for%20lithium-ion%20batteries_ABS.pdf |
| _version_ | 1848826677241577472 |
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| author | Shih, Jengywan Lin, Guanyin James Li, Ying Jeng Hung, Tai-Feng Jose, Rajan Karuppiah, Chelladurai Yang, Chun–Chen |
| author_facet | Shih, Jengywan Lin, Guanyin James Li, Ying Jeng Hung, Tai-Feng Jose, Rajan Karuppiah, Chelladurai Yang, Chun–Chen |
| author_sort | Shih, Jengywan |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | In this study, we demonstrate the effect of adding one-dimensional (1D) vapor-grown carbon fiber (VGCF) as a carbon additive to increase the electronic conductivity of LiFePO4 cathode. Because, the 1D VGCF structure can provide rapid and long-pathways for electron transfer and regulate a better phase transition effect on LiFePO4 cathode compared to the other-dimensional carbon additives. Here, the olivine-type LiFePO4/C composite (LFP/C) cathode is basically derived from a sol-gel method, followed by a spray-dry technique to obtain a homogenous spherical morphology. The carbon additives of 0D super P, 1D VGCF and 2D or 3D porous reduced graphene oxide (PGO) nanosheets containing cathodes-based, such as bare LFP/C, LFP/C/VGCF and LFP/C/PGO, half-cells were fabricated and tested at a cut-off voltage of 2.0 – 3.8 V (vs. Li/Li+). Interestingly, the LFP/C/VGCF showed better performance than the bare LFP/C and LFP/C/PGO. Especially at high-rate cycle-life, the LFP/C/VGCF cathode attained capacity retention of 100% for 100 cycles at 1C/1C and 98.83% for 100 cycles at 1C/10C. It is due to the higher electronic conductivity (ca. 2.36 × 10−4 S cm−1) and Li+ ion diffusion coefficient (ca. 2.56 × 10−13 cm2 s−1) of LFP/C/VGCF cathode than the other electrodes. It can also provide better reversibility in a phase transition of LiFePO4/FePO4 phases during the charge/discharge cycle, further confirmed by in-situ XRD and micro-Raman techniques. The results indicated that the LFP/C/VGCF cathode displayed much faster kinetics behavior than bare LFP/C cathode. |
| first_indexed | 2025-11-15T03:48:37Z |
| format | Article |
| id | ump-42685 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T03:48:37Z |
| publishDate | 2022 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-426852025-01-07T03:51:39Z http://umpir.ump.edu.my/id/eprint/42685/ Operando investigation on the fast two-phase transition kinetics of LiFePO4/C composite cathodes with carbon additives for lithium-ion batteries Shih, Jengywan Lin, Guanyin James Li, Ying Jeng Hung, Tai-Feng Jose, Rajan Karuppiah, Chelladurai Yang, Chun–Chen HD28 Management. Industrial Management Q Science (General) T Technology (General) In this study, we demonstrate the effect of adding one-dimensional (1D) vapor-grown carbon fiber (VGCF) as a carbon additive to increase the electronic conductivity of LiFePO4 cathode. Because, the 1D VGCF structure can provide rapid and long-pathways for electron transfer and regulate a better phase transition effect on LiFePO4 cathode compared to the other-dimensional carbon additives. Here, the olivine-type LiFePO4/C composite (LFP/C) cathode is basically derived from a sol-gel method, followed by a spray-dry technique to obtain a homogenous spherical morphology. The carbon additives of 0D super P, 1D VGCF and 2D or 3D porous reduced graphene oxide (PGO) nanosheets containing cathodes-based, such as bare LFP/C, LFP/C/VGCF and LFP/C/PGO, half-cells were fabricated and tested at a cut-off voltage of 2.0 – 3.8 V (vs. Li/Li+). Interestingly, the LFP/C/VGCF showed better performance than the bare LFP/C and LFP/C/PGO. Especially at high-rate cycle-life, the LFP/C/VGCF cathode attained capacity retention of 100% for 100 cycles at 1C/1C and 98.83% for 100 cycles at 1C/10C. It is due to the higher electronic conductivity (ca. 2.36 × 10−4 S cm−1) and Li+ ion diffusion coefficient (ca. 2.56 × 10−13 cm2 s−1) of LFP/C/VGCF cathode than the other electrodes. It can also provide better reversibility in a phase transition of LiFePO4/FePO4 phases during the charge/discharge cycle, further confirmed by in-situ XRD and micro-Raman techniques. The results indicated that the LFP/C/VGCF cathode displayed much faster kinetics behavior than bare LFP/C cathode. Elsevier Ltd 2022-07-01 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/42685/1/Operando%20investigation%20on%20the%20fast%20two-phase%20transition%20kinetics.pdf pdf en http://umpir.ump.edu.my/id/eprint/42685/2/Operando%20investigation%20on%20the%20fast%20two-phase%20transition%20kinetics%20of%20LiFePO4_C%20composite%20cathodes%20with%20carbon%20additives%20for%20lithium-ion%20batteries_ABS.pdf Shih, Jengywan and Lin, Guanyin and James Li, Ying Jeng and Hung, Tai-Feng and Jose, Rajan and Karuppiah, Chelladurai and Yang, Chun–Chen (2022) Operando investigation on the fast two-phase transition kinetics of LiFePO4/C composite cathodes with carbon additives for lithium-ion batteries. Electrochimica Acta, 419 (140356). pp. 1-14. ISSN 0013-4686. (Published) https://doi.org/10.1016/j.electacta.2022.140356 https://doi.org/10.1016/j.electacta.2022.140356 |
| spellingShingle | HD28 Management. Industrial Management Q Science (General) T Technology (General) Shih, Jengywan Lin, Guanyin James Li, Ying Jeng Hung, Tai-Feng Jose, Rajan Karuppiah, Chelladurai Yang, Chun–Chen Operando investigation on the fast two-phase transition kinetics of LiFePO4/C composite cathodes with carbon additives for lithium-ion batteries |
| title | Operando investigation on the fast two-phase transition kinetics of LiFePO4/C composite cathodes with carbon additives for lithium-ion batteries |
| title_full | Operando investigation on the fast two-phase transition kinetics of LiFePO4/C composite cathodes with carbon additives for lithium-ion batteries |
| title_fullStr | Operando investigation on the fast two-phase transition kinetics of LiFePO4/C composite cathodes with carbon additives for lithium-ion batteries |
| title_full_unstemmed | Operando investigation on the fast two-phase transition kinetics of LiFePO4/C composite cathodes with carbon additives for lithium-ion batteries |
| title_short | Operando investigation on the fast two-phase transition kinetics of LiFePO4/C composite cathodes with carbon additives for lithium-ion batteries |
| title_sort | operando investigation on the fast two-phase transition kinetics of lifepo4/c composite cathodes with carbon additives for lithium-ion batteries |
| topic | HD28 Management. Industrial Management Q Science (General) T Technology (General) |
| url | http://umpir.ump.edu.my/id/eprint/42685/ http://umpir.ump.edu.my/id/eprint/42685/ http://umpir.ump.edu.my/id/eprint/42685/ http://umpir.ump.edu.my/id/eprint/42685/1/Operando%20investigation%20on%20the%20fast%20two-phase%20transition%20kinetics.pdf http://umpir.ump.edu.my/id/eprint/42685/2/Operando%20investigation%20on%20the%20fast%20two-phase%20transition%20kinetics%20of%20LiFePO4_C%20composite%20cathodes%20with%20carbon%20additives%20for%20lithium-ion%20batteries_ABS.pdf |