Phosphate and Borate-Based Composite Interface of Single-Crystal LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> Enables Excellent Electrochemical Stability at High Operation Voltage
The application of nickel-rich cathodes in lithium-ion batteries has been hampered by its rapid capacity/voltage fading and limited performance of rate. In this work, a passivation technique is used to create a stable composite interface on single-crystal LiNi<sub>0.8</sub>Co<sub>0...
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MDPI AG
2023-05-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/10/3613 |
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| author | Fu Long Yuyang Liu Guobin Zhu Yan Wang Honghe Zheng |
| author_facet | Fu Long Yuyang Liu Guobin Zhu Yan Wang Honghe Zheng |
| author_sort | Fu Long |
| collection | DOAJ |
| description | The application of nickel-rich cathodes in lithium-ion batteries has been hampered by its rapid capacity/voltage fading and limited performance of rate. In this work, a passivation technique is used to create a stable composite interface on single-crystal LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> (NCM811) surface, which greatly improves the cycle life-span and high-voltage constancy of cathode with 4.5 and 4.6 V cut-off voltage. The improved Li<sup>+</sup> conductivity of the interface enables a firm cathode–electrolyte interphase (CEI), which reduces interfacial side reactions, lowers the risk of safety hazards, and improves irreversible phase transitions. As a result, the electrochemical performance of single-crystal Ni-rich cathode are remarkably enhanced. The specific capacity of 152 mAh g<sup>−1</sup> can be delivered at a charging/discharging rate of 5 C under 4.5 V cut-off voltage, much higher than 115 mAh g<sup>−1</sup> of the pristine NCM811. After 200 cycles at 1 C, the composite interface modified NCM811 demonstrates outstanding capacity retention of 85.4% and 83.8% at 4.5 V and 4.6 V cut-off voltage, respectively. |
| first_indexed | 2024-03-11T03:33:19Z |
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| id | doaj.art-42bb2b20338b49b582ff16edef16f773 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T03:33:19Z |
| publishDate | 2023-05-01 |
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| spelling | doaj.art-42bb2b20338b49b582ff16edef16f7732023-11-18T02:13:27ZengMDPI AGMaterials1996-19442023-05-011610361310.3390/ma16103613Phosphate and Borate-Based Composite Interface of Single-Crystal LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> Enables Excellent Electrochemical Stability at High Operation VoltageFu Long0Yuyang Liu1Guobin Zhu2Yan Wang3Honghe Zheng4College of Energy, Soochow University, Suzhou 215006, ChinaCollege of Energy, Soochow University, Suzhou 215006, ChinaCollege of Energy, Soochow University, Suzhou 215006, ChinaCollege of Energy, Soochow University, Suzhou 215006, ChinaCollege of Energy, Soochow University, Suzhou 215006, ChinaThe application of nickel-rich cathodes in lithium-ion batteries has been hampered by its rapid capacity/voltage fading and limited performance of rate. In this work, a passivation technique is used to create a stable composite interface on single-crystal LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> (NCM811) surface, which greatly improves the cycle life-span and high-voltage constancy of cathode with 4.5 and 4.6 V cut-off voltage. The improved Li<sup>+</sup> conductivity of the interface enables a firm cathode–electrolyte interphase (CEI), which reduces interfacial side reactions, lowers the risk of safety hazards, and improves irreversible phase transitions. As a result, the electrochemical performance of single-crystal Ni-rich cathode are remarkably enhanced. The specific capacity of 152 mAh g<sup>−1</sup> can be delivered at a charging/discharging rate of 5 C under 4.5 V cut-off voltage, much higher than 115 mAh g<sup>−1</sup> of the pristine NCM811. After 200 cycles at 1 C, the composite interface modified NCM811 demonstrates outstanding capacity retention of 85.4% and 83.8% at 4.5 V and 4.6 V cut-off voltage, respectively.https://www.mdpi.com/1996-1944/16/10/3613lithium-ion batteriescathodeLiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub>boric acid |
| spellingShingle | Fu Long Yuyang Liu Guobin Zhu Yan Wang Honghe Zheng Phosphate and Borate-Based Composite Interface of Single-Crystal LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> Enables Excellent Electrochemical Stability at High Operation Voltage Materials lithium-ion batteries cathode LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> boric acid |
| title | Phosphate and Borate-Based Composite Interface of Single-Crystal LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> Enables Excellent Electrochemical Stability at High Operation Voltage |
| title_full | Phosphate and Borate-Based Composite Interface of Single-Crystal LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> Enables Excellent Electrochemical Stability at High Operation Voltage |
| title_fullStr | Phosphate and Borate-Based Composite Interface of Single-Crystal LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> Enables Excellent Electrochemical Stability at High Operation Voltage |
| title_full_unstemmed | Phosphate and Borate-Based Composite Interface of Single-Crystal LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> Enables Excellent Electrochemical Stability at High Operation Voltage |
| title_short | Phosphate and Borate-Based Composite Interface of Single-Crystal LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> Enables Excellent Electrochemical Stability at High Operation Voltage |
| title_sort | phosphate and borate based composite interface of single crystal lini sub 0 8 sub co sub 0 1 sub mn sub 0 1 sub o sub 2 sub enables excellent electrochemical stability at high operation voltage |
| topic | lithium-ion batteries cathode LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> boric acid |
| url | https://www.mdpi.com/1996-1944/16/10/3613 |
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