{"title":"具有中空形态的纳米结构 LiNi0.8Co0.1Mn0.1O2,可提高作为锂离子电池阴极材料的循环稳定性","authors":"Fangya Guo, Zenan Hu, Yongfan Xie and Fang Wang*, ","doi":"10.1021/acsanm.4c01979","DOIUrl":null,"url":null,"abstract":"<p >LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> hollow micro–nano hierarchical microspheres (H-NCM811) were synthesized using multishelled hollow structured NiO microspheres as precursors with Co and Mn sources. The traditional synthetic methods of hollow structured NiO microspheres generally require complicated steps. Herein, a general and straightforward method is applied to synthesize the multishelled porous NiO microspheres by the hydrothermal method and calcination at high temperature. Compared to conventional cathode materials, the H-NCM811 cathode materials synthesized by the NiO hollow microsphere exhibit enhanced cycle stability. After 100 charge–discharge cycles at 1 C with a voltage range of 2.8–4.3 V, the capacity retention is 93.3%. Notably the capacity retention is 87.0% after 300 cycles at 5 C compared to 72.0% for the conventional NCM811. The enhanced electrochemical performance can be ascribed to the distinctive nanostructured hollow microsphere’s structure, which not only improves the discharge capacity by the higher specific surface area but also can provide a buffer zone during the Li-ion extraction/insertion process and maintain the structure stability.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.3000,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Nanostructured LiNi0.8Co0.1Mn0.1O2 with a Hollow Morphology Boosting Cycling Stability as Cathode Materials for Lithium-Ion Batteries\",\"authors\":\"Fangya Guo, Zenan Hu, Yongfan Xie and Fang Wang*, \",\"doi\":\"10.1021/acsanm.4c01979\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> hollow micro–nano hierarchical microspheres (H-NCM811) were synthesized using multishelled hollow structured NiO microspheres as precursors with Co and Mn sources. The traditional synthetic methods of hollow structured NiO microspheres generally require complicated steps. Herein, a general and straightforward method is applied to synthesize the multishelled porous NiO microspheres by the hydrothermal method and calcination at high temperature. Compared to conventional cathode materials, the H-NCM811 cathode materials synthesized by the NiO hollow microsphere exhibit enhanced cycle stability. After 100 charge–discharge cycles at 1 C with a voltage range of 2.8–4.3 V, the capacity retention is 93.3%. Notably the capacity retention is 87.0% after 300 cycles at 5 C compared to 72.0% for the conventional NCM811. The enhanced electrochemical performance can be ascribed to the distinctive nanostructured hollow microsphere’s structure, which not only improves the discharge capacity by the higher specific surface area but also can provide a buffer zone during the Li-ion extraction/insertion process and maintain the structure stability.</p>\",\"PeriodicalId\":6,\"journal\":{\"name\":\"ACS Applied Nano Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.3000,\"publicationDate\":\"2024-06-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Applied Nano Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acsanm.4c01979\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Nano Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsanm.4c01979","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
摘要
以多壳空心结构氧化镍微球为前驱体,以Co和Mn为源,合成了LiNi0.8Co0.1Mn0.1O2空心微纳分层微球(H-NCM811)。传统的空心结构氧化镍微球合成方法通常需要复杂的步骤。本文采用水热法和高温煅烧法合成多壳多孔镍氧化物微球,该方法简便易行。与传统的正极材料相比,由氧化镍空心微球合成的 H-NCM811 正极材料具有更高的循环稳定性。在电压范围为 2.8-4.3 V、温度为 1 C 的条件下进行 100 次充放电循环后,容量保持率为 93.3%。值得注意的是,在 5 C 下循环 300 次后,容量保持率为 87.0%,而传统 NCM811 的容量保持率为 72.0%。电化学性能的提高可归因于独特的纳米结构空心微球结构,这种结构不仅能通过较高的比表面积提高放电容量,还能在锂离子提取/插入过程中提供缓冲区并保持结构的稳定性。
Nanostructured LiNi0.8Co0.1Mn0.1O2 with a Hollow Morphology Boosting Cycling Stability as Cathode Materials for Lithium-Ion Batteries
LiNi0.8Co0.1Mn0.1O2 hollow micro–nano hierarchical microspheres (H-NCM811) were synthesized using multishelled hollow structured NiO microspheres as precursors with Co and Mn sources. The traditional synthetic methods of hollow structured NiO microspheres generally require complicated steps. Herein, a general and straightforward method is applied to synthesize the multishelled porous NiO microspheres by the hydrothermal method and calcination at high temperature. Compared to conventional cathode materials, the H-NCM811 cathode materials synthesized by the NiO hollow microsphere exhibit enhanced cycle stability. After 100 charge–discharge cycles at 1 C with a voltage range of 2.8–4.3 V, the capacity retention is 93.3%. Notably the capacity retention is 87.0% after 300 cycles at 5 C compared to 72.0% for the conventional NCM811. The enhanced electrochemical performance can be ascribed to the distinctive nanostructured hollow microsphere’s structure, which not only improves the discharge capacity by the higher specific surface area but also can provide a buffer zone during the Li-ion extraction/insertion process and maintain the structure stability.
期刊介绍:
ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.