Surface cobaltization for boosted kinetics and excellent stability of nickel-rich layered cathodes
The feasibility of LiNi<sub>0.6</sub>Co<sub>0.2</sub>Mn<sub>0.2</sub>O<sub>2</sub> as a primary cathode material has decreased due to the fragile cobalt (Co) supply chain and its undesirable effects on structural degradation. LiNi<sub>0.6</sub...
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Science Press
2024-05-01
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| Online Access: | https://www.sciengine.com/doi/10.1360/nso/20240010 |
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| author | Zhang Qiusheng Cui Chunyu Chen Hao Pan Shuaijun Zhang Yinghe Zhu Jian Lu Bingan |
| author_facet | Zhang Qiusheng Cui Chunyu Chen Hao Pan Shuaijun Zhang Yinghe Zhu Jian Lu Bingan |
| author_sort | Zhang Qiusheng |
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| description | The feasibility of LiNi<sub>0.6</sub>Co<sub>0.2</sub>Mn<sub>0.2</sub>O<sub>2</sub> as a primary cathode material has decreased due to the fragile cobalt (Co) supply chain and its undesirable effects on structural degradation. LiNi<sub>0.6</sub>Mn<sub>0.4</sub>O<sub>2</sub> deserves greater attention because of its high thermal and cyclic stability, coupled with low raw material and production costs. However, this material suffers from low reversible capacity and poor rate performance. Herein, we rationally design a high-performance cathode structure composed of a robust conductive protective layer, gradient Li<sup>+</sup> ions conductive layer and stable bulk phase of LiNi<sub>0.6</sub>Mn<sub>0.4</sub>O<sub>2</sub> through surface cobaltization, which not only boosts the reaction kinetics of the electrode but also suppresses particle cracking and mitigates surface structural degradation. As a result, a dramatically improved rate capacity (118.7 vs 53.5 mAh g<sup>−1</sup> at <sc>5 C)</sc> and impressive capacity retention after 300 cycles (90.4% in a full cell) at a high cutoff voltage <sc>(4.4 V)</sc> are obtained. Co-modified LiNi<sub>0.6</sub>Mn<sub>0.4</sub>O<sub>2</sub> is promising to challenge commercial position of LiNi<sub>0.6</sub>Co<sub>0.2</sub>Mn<sub>0.2</sub>O<sub>2</sub> attributed to the accessible capacity, superior rate capacity, excellent cycle performance, good thermal stability and low cost. Our results open a door for optimizing the use of Co and the structural design of high-nickel cathodes. |
| format | Article |
| id | doaj-art-78b2953bdd574f32bdb9c45dec5a5988 |
| institution | OA Journals |
| issn | 2097-1168 |
| language | English |
| publishDate | 2024-05-01 |
| publisher | Science Press |
| record_format | Article |
| series | National Science Open |
| spelling | doaj-art-78b2953bdd574f32bdb9c45dec5a59882025-08-20T02:02:24ZengScience PressNational Science Open2097-11682024-05-01310.1360/nso/20240010eb33e642Surface cobaltization for boosted kinetics and excellent stability of nickel-rich layered cathodesZhang Qiusheng0Cui Chunyu1Chen Hao2Pan Shuaijun3Zhang Yinghe4Zhu Jian5Lu Bingan6["State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan Key Laboratory of Two-Dimensional Materials, School of Physics and Electronics, Hunan University, Changsha 410082, China"]["State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan Key Laboratory of Two-Dimensional Materials, School of Physics and Electronics, Hunan University, Changsha 410082, China"]["State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan Key Laboratory of Two-Dimensional Materials, School of Physics and Electronics, Hunan University, Changsha 410082, China"]["State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan Key Laboratory of Two-Dimensional Materials, School of Physics and Electronics, Hunan University, Changsha 410082, China"]["School of Science, Harbin Institute of Technology, Shenzhen 518055, China"]["State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan Key Laboratory of Two-Dimensional Materials, School of Physics and Electronics, Hunan University, Changsha 410082, China","Shenzhen Research Institute, Hunan University, Changsha 518055, China"]["State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan Key Laboratory of Two-Dimensional Materials, School of Physics and Electronics, Hunan University, Changsha 410082, China"]The feasibility of LiNi<sub>0.6</sub>Co<sub>0.2</sub>Mn<sub>0.2</sub>O<sub>2</sub> as a primary cathode material has decreased due to the fragile cobalt (Co) supply chain and its undesirable effects on structural degradation. LiNi<sub>0.6</sub>Mn<sub>0.4</sub>O<sub>2</sub> deserves greater attention because of its high thermal and cyclic stability, coupled with low raw material and production costs. However, this material suffers from low reversible capacity and poor rate performance. Herein, we rationally design a high-performance cathode structure composed of a robust conductive protective layer, gradient Li<sup>+</sup> ions conductive layer and stable bulk phase of LiNi<sub>0.6</sub>Mn<sub>0.4</sub>O<sub>2</sub> through surface cobaltization, which not only boosts the reaction kinetics of the electrode but also suppresses particle cracking and mitigates surface structural degradation. As a result, a dramatically improved rate capacity (118.7 vs 53.5 mAh g<sup>−1</sup> at <sc>5 C)</sc> and impressive capacity retention after 300 cycles (90.4% in a full cell) at a high cutoff voltage <sc>(4.4 V)</sc> are obtained. Co-modified LiNi<sub>0.6</sub>Mn<sub>0.4</sub>O<sub>2</sub> is promising to challenge commercial position of LiNi<sub>0.6</sub>Co<sub>0.2</sub>Mn<sub>0.2</sub>O<sub>2</sub> attributed to the accessible capacity, superior rate capacity, excellent cycle performance, good thermal stability and low cost. Our results open a door for optimizing the use of Co and the structural design of high-nickel cathodes.https://www.sciengine.com/doi/10.1360/nso/20240010lithium-ion batterynickel-rich layered cathodeslow-/zero-cobaltsurface reconstructionstructure design |
| spellingShingle | Zhang Qiusheng Cui Chunyu Chen Hao Pan Shuaijun Zhang Yinghe Zhu Jian Lu Bingan Surface cobaltization for boosted kinetics and excellent stability of nickel-rich layered cathodes National Science Open lithium-ion battery nickel-rich layered cathodes low-/zero-cobalt surface reconstruction structure design |
| title | Surface cobaltization for boosted kinetics and excellent stability of nickel-rich layered cathodes |
| title_full | Surface cobaltization for boosted kinetics and excellent stability of nickel-rich layered cathodes |
| title_fullStr | Surface cobaltization for boosted kinetics and excellent stability of nickel-rich layered cathodes |
| title_full_unstemmed | Surface cobaltization for boosted kinetics and excellent stability of nickel-rich layered cathodes |
| title_short | Surface cobaltization for boosted kinetics and excellent stability of nickel-rich layered cathodes |
| title_sort | surface cobaltization for boosted kinetics and excellent stability of nickel rich layered cathodes |
| topic | lithium-ion battery nickel-rich layered cathodes low-/zero-cobalt surface reconstruction structure design |
| url | https://www.sciengine.com/doi/10.1360/nso/20240010 |
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