A figure of merit for fast-charging Li-ion battery materials
Rate capability is characterized necessarily in almost all battery-related reports, while there is no universal metric for quantitative comparison. Here, we proposed the characteristic time of diffusion, which mainly combines the effects of diffusion coefficients and geometric sizes, as an easy-to-u...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/161499 |
| _version_ | 1811687164357902336 |
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| author | Xia, Huarong Zhang, Wei Cao, Shengkai Chen, Xiaodong |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Xia, Huarong Zhang, Wei Cao, Shengkai Chen, Xiaodong |
| author_sort | Xia, Huarong |
| collection | NTU |
| description | Rate capability is characterized necessarily in almost all battery-related reports, while there is no universal metric for quantitative comparison. Here, we proposed the characteristic time of diffusion, which mainly combines the effects of diffusion coefficients and geometric sizes, as an easy-to-use figure of merit (FOM) to standardize the comparison of fast-charging battery materials. It offers an indicator to rank the rate capabilities of different battery materials and suggests two general methods to improve the rate capability: decreasing the geometric sizes or increasing the diffusion coefficients. Based on this FOM, more comprehensive FOMs for quantifying the rate capabilities of battery materials are expected by incorporating other processes (interfacial reaction, migration) into the current diffusion-dominated electrochemical model. Combined with Peukert's empirical law, it may characterize rate capabilities of batteries in the future. |
| first_indexed | 2024-10-01T05:11:57Z |
| format | Journal Article |
| id | ntu-10356/161499 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:11:57Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1614992023-07-14T16:05:57Z A figure of merit for fast-charging Li-ion battery materials Xia, Huarong Zhang, Wei Cao, Shengkai Chen, Xiaodong School of Materials Science and Engineering Institute of Materials Research and Engineering, A*STAR Innovative Centre for Flexible Devices Engineering::Materials::Energy materials Science::Chemistry::Physical chemistry::Electrochemistry Electrochemistry Kinetics Rate capability is characterized necessarily in almost all battery-related reports, while there is no universal metric for quantitative comparison. Here, we proposed the characteristic time of diffusion, which mainly combines the effects of diffusion coefficients and geometric sizes, as an easy-to-use figure of merit (FOM) to standardize the comparison of fast-charging battery materials. It offers an indicator to rank the rate capabilities of different battery materials and suggests two general methods to improve the rate capability: decreasing the geometric sizes or increasing the diffusion coefficients. Based on this FOM, more comprehensive FOMs for quantifying the rate capabilities of battery materials are expected by incorporating other processes (interfacial reaction, migration) into the current diffusion-dominated electrochemical model. Combined with Peukert's empirical law, it may characterize rate capabilities of batteries in the future. National Research Foundation (NRF) Submitted/Accepted version The authors are grateful for funding support from the National Research Foundation of Prime Minister’s Office of Singapore (NRF2015_IIP003_004). 2022-09-07T06:02:28Z 2022-09-07T06:02:28Z 2022 Journal Article Xia, H., Zhang, W., Cao, S. & Chen, X. (2022). A figure of merit for fast-charging Li-ion battery materials. ACS Nano, 16(6), 8525-8530. https://dx.doi.org/10.1021/acsnano.2c03922 1936-0851 https://hdl.handle.net/10356/161499 10.1021/acsnano.2c03922 35708489 2-s2.0-85133102952 6 16 8525 8530 en NRF2015_IIP003_004 ACS Nano This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Nano, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsnano.2c03922. application/pdf |
| spellingShingle | Engineering::Materials::Energy materials Science::Chemistry::Physical chemistry::Electrochemistry Electrochemistry Kinetics Xia, Huarong Zhang, Wei Cao, Shengkai Chen, Xiaodong A figure of merit for fast-charging Li-ion battery materials |
| title | A figure of merit for fast-charging Li-ion battery materials |
| title_full | A figure of merit for fast-charging Li-ion battery materials |
| title_fullStr | A figure of merit for fast-charging Li-ion battery materials |
| title_full_unstemmed | A figure of merit for fast-charging Li-ion battery materials |
| title_short | A figure of merit for fast-charging Li-ion battery materials |
| title_sort | figure of merit for fast charging li ion battery materials |
| topic | Engineering::Materials::Energy materials Science::Chemistry::Physical chemistry::Electrochemistry Electrochemistry Kinetics |
| url | https://hdl.handle.net/10356/161499 |
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