Artificial Cathode-Electrolyte Interphases on Ni-Rich LiNi0.8Co0.1Mn0.1O2 by Carbon Nanotubes Modified LiF for Enhanced Cycleability
The high energy density of nickel-rich LiNi0.8Co0.1Mn0.1O2 (NCM811) was hindered the wide usage of this material, by the lack of interface stability which will reduce its long cycle electrochemical performance. In this paper, lithium fluoride nanoparticles were used as artificial cathode-electrolyte...
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| Format: | Article |
| Language: | English |
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The Electrochemical Society of Japan
2021-05-01
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| Series: | Electrochemistry |
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| Online Access: | https://www.jstage.jst.go.jp/article/electrochemistry/89/3/89_21-00022/_pdf/-char/en |
| _version_ | 1797970208469549056 |
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| author | Ruoyu QIU Zhuangchun WU |
| author_facet | Ruoyu QIU Zhuangchun WU |
| author_sort | Ruoyu QIU |
| collection | DOAJ |
| description | The high energy density of nickel-rich LiNi0.8Co0.1Mn0.1O2 (NCM811) was hindered the wide usage of this material, by the lack of interface stability which will reduce its long cycle electrochemical performance. In this paper, lithium fluoride nanoparticles were used as artificial cathode-electrolyte interphase to protect the NCM811 from vigorous SEI formation. Since the conductivity of lithium fluoride will reduce the electrode’s electron mobility, 1 wt% multi-wall carbon nanotubes were added to mitigate this issue. Scanning electron microscope and energy disperse spectroscopy represent that the lithium fluoride and multi-wall carbon nanotubes were both evenly dispersed throughout the electrode. After cycled at the same higher c-rates, the specific capacity retention at C/5-rate of the Pristine NCM811 decreased from 92.76 % to 86.55 % (158.7 mAh g−1) while the LiF 5 wt% + MWCNTs 1 wt% modified NCM811 decreased from 96.04 % to 91.77 % (182.6 mAh g−1). The outstanding electrochemical performance is mainly attribute to the artificial cathode-electrolyte interphase, which protects the cathode from side reactions and the consumption of electrolyte. The pulse measurements were also carried out after 50th cycle of 1 C-rate, and the total voltage change of the Pristine sample was up to 1.5336 V at maximum current rate of 10 C, while that of LiF 5 wt% + MWCNTs 1 wt% modified sample was only 0.3408 V, revealing that the artificial cathode-electrolyte interphase could reduce the polarization generated during cycles and the good conductivity by adding MWCNTs. |
| first_indexed | 2024-04-11T03:14:18Z |
| format | Article |
| id | doaj.art-d3c3277a07d14c71be7c48f1d68ec9a8 |
| institution | Directory Open Access Journal |
| issn | 2186-2451 |
| language | English |
| last_indexed | 2024-04-11T03:14:18Z |
| publishDate | 2021-05-01 |
| publisher | The Electrochemical Society of Japan |
| record_format | Article |
| series | Electrochemistry |
| spelling | doaj.art-d3c3277a07d14c71be7c48f1d68ec9a82023-01-02T10:53:06ZengThe Electrochemical Society of JapanElectrochemistry2186-24512021-05-0189329630210.5796/electrochemistry.21-00022electrochemistryArtificial Cathode-Electrolyte Interphases on Ni-Rich LiNi0.8Co0.1Mn0.1O2 by Carbon Nanotubes Modified LiF for Enhanced CycleabilityRuoyu QIU0Zhuangchun WU1College of Science, Donghua UniversityInstitute of Functional Materials, Donghua UniversityThe high energy density of nickel-rich LiNi0.8Co0.1Mn0.1O2 (NCM811) was hindered the wide usage of this material, by the lack of interface stability which will reduce its long cycle electrochemical performance. In this paper, lithium fluoride nanoparticles were used as artificial cathode-electrolyte interphase to protect the NCM811 from vigorous SEI formation. Since the conductivity of lithium fluoride will reduce the electrode’s electron mobility, 1 wt% multi-wall carbon nanotubes were added to mitigate this issue. Scanning electron microscope and energy disperse spectroscopy represent that the lithium fluoride and multi-wall carbon nanotubes were both evenly dispersed throughout the electrode. After cycled at the same higher c-rates, the specific capacity retention at C/5-rate of the Pristine NCM811 decreased from 92.76 % to 86.55 % (158.7 mAh g−1) while the LiF 5 wt% + MWCNTs 1 wt% modified NCM811 decreased from 96.04 % to 91.77 % (182.6 mAh g−1). The outstanding electrochemical performance is mainly attribute to the artificial cathode-electrolyte interphase, which protects the cathode from side reactions and the consumption of electrolyte. The pulse measurements were also carried out after 50th cycle of 1 C-rate, and the total voltage change of the Pristine sample was up to 1.5336 V at maximum current rate of 10 C, while that of LiF 5 wt% + MWCNTs 1 wt% modified sample was only 0.3408 V, revealing that the artificial cathode-electrolyte interphase could reduce the polarization generated during cycles and the good conductivity by adding MWCNTs.https://www.jstage.jst.go.jp/article/electrochemistry/89/3/89_21-00022/_pdf/-char/enni-rich cathode materialartificial cathode electrolyte interfacelifmultiwalled carbon nanotube |
| spellingShingle | Ruoyu QIU Zhuangchun WU Artificial Cathode-Electrolyte Interphases on Ni-Rich LiNi0.8Co0.1Mn0.1O2 by Carbon Nanotubes Modified LiF for Enhanced Cycleability Electrochemistry ni-rich cathode material artificial cathode electrolyte interface lif multiwalled carbon nanotube |
| title | Artificial Cathode-Electrolyte Interphases on Ni-Rich LiNi0.8Co0.1Mn0.1O2 by Carbon Nanotubes Modified LiF for Enhanced Cycleability |
| title_full | Artificial Cathode-Electrolyte Interphases on Ni-Rich LiNi0.8Co0.1Mn0.1O2 by Carbon Nanotubes Modified LiF for Enhanced Cycleability |
| title_fullStr | Artificial Cathode-Electrolyte Interphases on Ni-Rich LiNi0.8Co0.1Mn0.1O2 by Carbon Nanotubes Modified LiF for Enhanced Cycleability |
| title_full_unstemmed | Artificial Cathode-Electrolyte Interphases on Ni-Rich LiNi0.8Co0.1Mn0.1O2 by Carbon Nanotubes Modified LiF for Enhanced Cycleability |
| title_short | Artificial Cathode-Electrolyte Interphases on Ni-Rich LiNi0.8Co0.1Mn0.1O2 by Carbon Nanotubes Modified LiF for Enhanced Cycleability |
| title_sort | artificial cathode electrolyte interphases on ni rich lini0 8co0 1mn0 1o2 by carbon nanotubes modified lif for enhanced cycleability |
| topic | ni-rich cathode material artificial cathode electrolyte interface lif multiwalled carbon nanotube |
| url | https://www.jstage.jst.go.jp/article/electrochemistry/89/3/89_21-00022/_pdf/-char/en |
| work_keys_str_mv | AT ruoyuqiu artificialcathodeelectrolyteinterphasesonnirichlini08co01mn01o2bycarbonnanotubesmodifiedlifforenhancedcycleability AT zhuangchunwu artificialcathodeelectrolyteinterphasesonnirichlini08co01mn01o2bycarbonnanotubesmodifiedlifforenhancedcycleability |