Zhenliang Duan, Pengbo Zhai, Ning Zhao, Xiangxin Guo
{"title":"用于高能量密度和长寿命锂电池的二维氮化石墨碳(g-C3N4)涂层 LiNi0.8Co0.1Mn0.1O2 阴极","authors":"Zhenliang Duan, Pengbo Zhai, Ning Zhao, Xiangxin Guo","doi":"10.1002/eem2.12770","DOIUrl":null,"url":null,"abstract":"<p>High-capacity nickel-rich layered oxides are promising cathode materials for high-energy-density lithium batteries. However, the poor structural stability and severe side reactions at the electrode/electrolyte interface result in unsatisfactory cycle performance. Herein, the thin layer of two-dimensional (2D) graphitic carbon-nitride (g-C<sub>3</sub>N<sub>4</sub>) is uniformly coated on the LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> (denoted as NCM811@CN) using a facile chemical vaporization-assisted synthesis method. As an ideal protective layer, the g-C<sub>3</sub>N<sub>4</sub> layer effectively avoids direct contact between the NCM811 cathode and the electrolyte, preventing harmful side reactions and inhibiting secondary crystal cracking. Moreover, the unique nanopore structure and abundant nitrogen vacancy edges in g-C<sub>3</sub>N<sub>4</sub> facilitate the adsorption and diffusion of lithium ions, which enhances the lithium deintercalation/intercalation kinetics of the NCM811 cathode. As a result, the NCM811@CN-3wt% cathode exhibits 161.3 mAh g<sup>−1</sup> and capacity retention of 84.6% at 0.5 C and 55 °C after 400 cycles and 95.7 mAh g<sup>−1</sup> at 10 C, which is greatly superior to the uncoated NCM811 (i.e. 129.3 mAh g<sup>−1</sup> and capacity retention of 67.4% at 0.5 C and 55 °C after 220 cycles and 28.8 mAh g<sup>−1</sup> at 10 C). The improved cycle performance of the NCM811@CN-3wt% cathode is also applicable to solid–liquid-hybrid cells composed of PVDF:LLZTO electrolyte membranes, which show 163.8 mAh g<sup>−1</sup> and the capacity retention of 88.1% at 0.1 C and 30 °C after 200 cycles and 95.3 mAh g<sup>−1</sup> at 1 C.</p>","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"7 6","pages":""},"PeriodicalIF":13.0000,"publicationDate":"2024-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eem2.12770","citationCount":"0","resultStr":"{\"title\":\"Two-Dimensional Graphitic Carbon-Nitride (g-C3N4)-Coated LiNi0.8Co0.1Mn0.1O2 Cathodes for High-Energy-Density and Long-Life Lithium Batteries\",\"authors\":\"Zhenliang Duan, Pengbo Zhai, Ning Zhao, Xiangxin Guo\",\"doi\":\"10.1002/eem2.12770\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>High-capacity nickel-rich layered oxides are promising cathode materials for high-energy-density lithium batteries. However, the poor structural stability and severe side reactions at the electrode/electrolyte interface result in unsatisfactory cycle performance. Herein, the thin layer of two-dimensional (2D) graphitic carbon-nitride (g-C<sub>3</sub>N<sub>4</sub>) is uniformly coated on the LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> (denoted as NCM811@CN) using a facile chemical vaporization-assisted synthesis method. As an ideal protective layer, the g-C<sub>3</sub>N<sub>4</sub> layer effectively avoids direct contact between the NCM811 cathode and the electrolyte, preventing harmful side reactions and inhibiting secondary crystal cracking. Moreover, the unique nanopore structure and abundant nitrogen vacancy edges in g-C<sub>3</sub>N<sub>4</sub> facilitate the adsorption and diffusion of lithium ions, which enhances the lithium deintercalation/intercalation kinetics of the NCM811 cathode. As a result, the NCM811@CN-3wt% cathode exhibits 161.3 mAh g<sup>−1</sup> and capacity retention of 84.6% at 0.5 C and 55 °C after 400 cycles and 95.7 mAh g<sup>−1</sup> at 10 C, which is greatly superior to the uncoated NCM811 (i.e. 129.3 mAh g<sup>−1</sup> and capacity retention of 67.4% at 0.5 C and 55 °C after 220 cycles and 28.8 mAh g<sup>−1</sup> at 10 C). The improved cycle performance of the NCM811@CN-3wt% cathode is also applicable to solid–liquid-hybrid cells composed of PVDF:LLZTO electrolyte membranes, which show 163.8 mAh g<sup>−1</sup> and the capacity retention of 88.1% at 0.1 C and 30 °C after 200 cycles and 95.3 mAh g<sup>−1</sup> at 1 C.</p>\",\"PeriodicalId\":11554,\"journal\":{\"name\":\"Energy & Environmental Materials\",\"volume\":\"7 6\",\"pages\":\"\"},\"PeriodicalIF\":13.0000,\"publicationDate\":\"2024-06-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eem2.12770\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Energy & Environmental Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/eem2.12770\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy & Environmental Materials","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/eem2.12770","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Two-Dimensional Graphitic Carbon-Nitride (g-C3N4)-Coated LiNi0.8Co0.1Mn0.1O2 Cathodes for High-Energy-Density and Long-Life Lithium Batteries
High-capacity nickel-rich layered oxides are promising cathode materials for high-energy-density lithium batteries. However, the poor structural stability and severe side reactions at the electrode/electrolyte interface result in unsatisfactory cycle performance. Herein, the thin layer of two-dimensional (2D) graphitic carbon-nitride (g-C3N4) is uniformly coated on the LiNi0.8Co0.1Mn0.1O2 (denoted as NCM811@CN) using a facile chemical vaporization-assisted synthesis method. As an ideal protective layer, the g-C3N4 layer effectively avoids direct contact between the NCM811 cathode and the electrolyte, preventing harmful side reactions and inhibiting secondary crystal cracking. Moreover, the unique nanopore structure and abundant nitrogen vacancy edges in g-C3N4 facilitate the adsorption and diffusion of lithium ions, which enhances the lithium deintercalation/intercalation kinetics of the NCM811 cathode. As a result, the NCM811@CN-3wt% cathode exhibits 161.3 mAh g−1 and capacity retention of 84.6% at 0.5 C and 55 °C after 400 cycles and 95.7 mAh g−1 at 10 C, which is greatly superior to the uncoated NCM811 (i.e. 129.3 mAh g−1 and capacity retention of 67.4% at 0.5 C and 55 °C after 220 cycles and 28.8 mAh g−1 at 10 C). The improved cycle performance of the NCM811@CN-3wt% cathode is also applicable to solid–liquid-hybrid cells composed of PVDF:LLZTO electrolyte membranes, which show 163.8 mAh g−1 and the capacity retention of 88.1% at 0.1 C and 30 °C after 200 cycles and 95.3 mAh g−1 at 1 C.
期刊介绍:
Energy & Environmental Materials (EEM) is an international journal published by Zhengzhou University in collaboration with John Wiley & Sons, Inc. The journal aims to publish high quality research related to materials for energy harvesting, conversion, storage, and transport, as well as for creating a cleaner environment. EEM welcomes research work of significant general interest that has a high impact on society-relevant technological advances. The scope of the journal is intentionally broad, recognizing the complexity of issues and challenges related to energy and environmental materials. Therefore, interdisciplinary work across basic science and engineering disciplines is particularly encouraged. The areas covered by the journal include, but are not limited to, materials and composites for photovoltaics and photoelectrochemistry, bioprocessing, batteries, fuel cells, supercapacitors, clean air, and devices with multifunctionality. The readership of the journal includes chemical, physical, biological, materials, and environmental scientists and engineers from academia, industry, and policy-making.