Integrated Ni and Li‐Rich Layered Oxide Cathode Materials for High Voltage Cycling in Rechargeable Li‐Ion Batteries
Abstract Although the Ni‐rich oxide cathodes possess a high specific capacity above 180 mAh g−1, they suffer from capacity fading upon cycling to above 4.3 V due to their high surface reactivity with the electrolyte, structural layered to rock‐salt phase transformation and development of micro‐crack...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley-VCH
2022-11-01
|
| Series: | ChemElectroChem |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/celc.202200786 |
| _version_ | 1797776094519099392 |
|---|---|
| author | Yuvashri Jayamkondan Prof. Philipp Adelhelm Dr. Prasant Kumar Nayak |
| author_facet | Yuvashri Jayamkondan Prof. Philipp Adelhelm Dr. Prasant Kumar Nayak |
| author_sort | Yuvashri Jayamkondan |
| collection | DOAJ |
| description | Abstract Although the Ni‐rich oxide cathodes possess a high specific capacity above 180 mAh g−1, they suffer from capacity fading upon cycling to above 4.3 V due to their high surface reactivity with the electrolyte, structural layered to rock‐salt phase transformation and development of micro‐cracks. Herewith, the Ni‐rich oxide is integrated with those of Li and Mn‐rich oxides and their electrochemical performance is evaluated in Li half‐cells: LiNi0.6Mn0.2Co0.2O2 (NMC622), 0.5LiNi0.6Mn0.2Co0.2O2 ⋅ 0.5Li1.2Ni0.16Mn0.56Co0.08O2 (NL5050), and 0.25 LiNi0.6Mn0.2Co0.2O2 ⋅ 0.75 Li1.2Ni0.16Mn0.56Co0.08O2 (NL2575). Interestingly, the resultant integrated 0.5LiNi0.6Mn0.2Co0.2O2 ⋅ 0.5Li1.2Ni0.16Mn0.56Co0.08O2 (NL5050) cathode with an equal molar concentration of Ni and Li‐rich oxides exhibits a specific capacity of about 190 mAh g−1 with a capacity retention of 83 % after 100 cycles at 0.1 C rate. On the other hand, the Ni‐rich oxide alone although exhibits an initial high specific capacity of 200 mAh g−1, it suffers from a low capacity retention of only 35 % after 100 cycles. Thus, this study clearly indicates the benefits of higher cycling stability that results from the integration of Ni‐rich and Li‐rich oxide cathodes. Hence, the current work promotes the high voltage cycling of oxides through the optimization of integrated oxide cathodes, which can provide high capacity and long cycle‐life for Li‐ion batteries. |
| first_indexed | 2024-03-12T22:45:02Z |
| format | Article |
| id | doaj.art-4194aa0947144e3587153b0bceeecfba |
| institution | Directory Open Access Journal |
| issn | 2196-0216 |
| language | English |
| last_indexed | 2024-03-12T22:45:02Z |
| publishDate | 2022-11-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | ChemElectroChem |
| spelling | doaj.art-4194aa0947144e3587153b0bceeecfba2023-07-21T06:16:09ZengWiley-VCHChemElectroChem2196-02162022-11-01921n/an/a10.1002/celc.202200786Integrated Ni and Li‐Rich Layered Oxide Cathode Materials for High Voltage Cycling in Rechargeable Li‐Ion BatteriesYuvashri Jayamkondan0Prof. Philipp Adelhelm1Dr. Prasant Kumar Nayak2Department of Chemistry SRM Institute of Science and Technology Kattankulathur 603203 Chennai Tamil Nadu IndiaHumboldt-University Berlin Institute of Chemistry Brook-Taylor-Str. 2 12489 Berlin GermanyDepartment of Chemistry SRM Institute of Science and Technology Kattankulathur 603203 Chennai Tamil Nadu IndiaAbstract Although the Ni‐rich oxide cathodes possess a high specific capacity above 180 mAh g−1, they suffer from capacity fading upon cycling to above 4.3 V due to their high surface reactivity with the electrolyte, structural layered to rock‐salt phase transformation and development of micro‐cracks. Herewith, the Ni‐rich oxide is integrated with those of Li and Mn‐rich oxides and their electrochemical performance is evaluated in Li half‐cells: LiNi0.6Mn0.2Co0.2O2 (NMC622), 0.5LiNi0.6Mn0.2Co0.2O2 ⋅ 0.5Li1.2Ni0.16Mn0.56Co0.08O2 (NL5050), and 0.25 LiNi0.6Mn0.2Co0.2O2 ⋅ 0.75 Li1.2Ni0.16Mn0.56Co0.08O2 (NL2575). Interestingly, the resultant integrated 0.5LiNi0.6Mn0.2Co0.2O2 ⋅ 0.5Li1.2Ni0.16Mn0.56Co0.08O2 (NL5050) cathode with an equal molar concentration of Ni and Li‐rich oxides exhibits a specific capacity of about 190 mAh g−1 with a capacity retention of 83 % after 100 cycles at 0.1 C rate. On the other hand, the Ni‐rich oxide alone although exhibits an initial high specific capacity of 200 mAh g−1, it suffers from a low capacity retention of only 35 % after 100 cycles. Thus, this study clearly indicates the benefits of higher cycling stability that results from the integration of Ni‐rich and Li‐rich oxide cathodes. Hence, the current work promotes the high voltage cycling of oxides through the optimization of integrated oxide cathodes, which can provide high capacity and long cycle‐life for Li‐ion batteries.https://doi.org/10.1002/celc.202200786Cathode materialshigh capacityLi and Mn-rich layered oxidelong cycle-lifeNi-rich oxide |
| spellingShingle | Yuvashri Jayamkondan Prof. Philipp Adelhelm Dr. Prasant Kumar Nayak Integrated Ni and Li‐Rich Layered Oxide Cathode Materials for High Voltage Cycling in Rechargeable Li‐Ion Batteries ChemElectroChem Cathode materials high capacity Li and Mn-rich layered oxide long cycle-life Ni-rich oxide |
| title | Integrated Ni and Li‐Rich Layered Oxide Cathode Materials for High Voltage Cycling in Rechargeable Li‐Ion Batteries |
| title_full | Integrated Ni and Li‐Rich Layered Oxide Cathode Materials for High Voltage Cycling in Rechargeable Li‐Ion Batteries |
| title_fullStr | Integrated Ni and Li‐Rich Layered Oxide Cathode Materials for High Voltage Cycling in Rechargeable Li‐Ion Batteries |
| title_full_unstemmed | Integrated Ni and Li‐Rich Layered Oxide Cathode Materials for High Voltage Cycling in Rechargeable Li‐Ion Batteries |
| title_short | Integrated Ni and Li‐Rich Layered Oxide Cathode Materials for High Voltage Cycling in Rechargeable Li‐Ion Batteries |
| title_sort | integrated ni and li rich layered oxide cathode materials for high voltage cycling in rechargeable li ion batteries |
| topic | Cathode materials high capacity Li and Mn-rich layered oxide long cycle-life Ni-rich oxide |
| url | https://doi.org/10.1002/celc.202200786 |
| work_keys_str_mv | AT yuvashrijayamkondan integratedniandlirichlayeredoxidecathodematerialsforhighvoltagecyclinginrechargeableliionbatteries AT profphilippadelhelm integratedniandlirichlayeredoxidecathodematerialsforhighvoltagecyclinginrechargeableliionbatteries AT drprasantkumarnayak integratedniandlirichlayeredoxidecathodematerialsforhighvoltagecyclinginrechargeableliionbatteries |