| Download | - View full text: Towards improving the practical energy density of Li-ion batteries: optimization and evaluation of silicon: graphite composites in full cells (PDF, 1 MB)
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| DOI | Resolve DOI: https://doi.org/10.1149/2.0481701jes |
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| Author | Search for: Yim, Chae-Ho1 ; Search for: Niketic, Svetlana1 ; Search for: Salem, Nuha1 ; Search for: Naboka, Olga1 ; Search for: Abu-lebdeh, Yaser1 |
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| Name affiliation | - National Research Council Canada. Energy, Mining and Environment
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| Format | Text |
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| Type | Article |
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| Journal title | Journal of The Electrochemical Society |
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| ISSN | 0013-4651
1945-7111 |
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| Volume | 164 |
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| Issue | 1 |
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| Pages | A6294–A6302 |
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| Abstract | Increasing the energy density of Li-ion batteries is very crucial for the success of electric vehicles, grid-scale energy storage, and next-generation consumer electronics. One popular approach is to incrementally increase the capacity of the graphite anode by integratingsilicon into composites with capacities between 500 and 1000 mAh/g as a transient and practical alternative to the more-challenging,silicon-only anodes. In this work, we have calculated the percentage of improvement in the capacity of silicon:graphite compositesand their impact on energy density of Li-ion full cell. We have used the Design of Experiment method to optimize composites usingdata from half cells, and it is found that 16% improvements in practical energy density of Li-ion full cells can be achieved using 15to 25 wt% of silicon. However, full-cell assembly and testing of these composites using LiNi0.5Mn0.5Co0.5O2cathode have provento be challenging and composites with no more than 10 wt% silicon were tested giving 63% capacity retention of 95 mAh/g at only50 cycles. The work demonstrates that introducing even the smallest amount of silicon into graphite anodes is still a challenge andto overcome that improvements to the different components of the Li-ion battery are required. |
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| Publication date | 2017 |
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| Terms of use | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 23001318 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction |
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Record identifier | dbb07ada-2b41-44be-a462-2ccd85f305bc | | Record created | 2017-01-17 |
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| Record modified | 2019-03-08 |
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