Qianrong Jiang, Ruoyu Cao, Jin Luo, Yongjin Fang, Zhongxue Chen, Yuliang Cao
{"title":"利用通孔碳球设计梯度孔隙结构,促进锂离子电池的快速充电和低温工作性能","authors":"Qianrong Jiang, Ruoyu Cao, Jin Luo, Yongjin Fang, Zhongxue Chen, Yuliang Cao","doi":"10.1002/aenm.202403164","DOIUrl":null,"url":null,"abstract":"The reduced surface porosity of highly compacted graphite anode after calendering is one of the major obstacles restraining the fast‐charging capability and low‐temperature adaptability of lithium‐ion batteries. In this work, through‐hole carbon spheres (THCS) synthesized by coaxial electrospinning and the following template sacrifice method are employed as a pore‐forming agent on graphite surfaces for the first time. The established gradient porosity architecture endows graphite anode with interconnected conductive networks and abundant Li<jats:sup>+</jats:sup> transport channels. Therefore, the THCS pouch cell exhibits fast charging capability (charging efficiency of 49.2% at 5 C), superior cycling stability (96% capacity retention after 500 cycles at 1 C), and low‐temperature adaptability (high lithium plating resistance at −10 °C). By contrast, severe lithium‐plating behavior is observed in the blank pouch cell under the same testing conditions. It is believed that the facile and scalable gradient pore structure manufacturing technology will succeed in promoting the fast‐charging capability and low‐temperature adaptability of commercial Li‐ion batteries.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":null,"pages":null},"PeriodicalIF":24.4000,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Design of Gradient Porosity Architecture with Through‐Hole Carbon Spheres to Promoting Fast Charging and Low‐Temperature Workable Lithium‐Ion Batteries\",\"authors\":\"Qianrong Jiang, Ruoyu Cao, Jin Luo, Yongjin Fang, Zhongxue Chen, Yuliang Cao\",\"doi\":\"10.1002/aenm.202403164\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The reduced surface porosity of highly compacted graphite anode after calendering is one of the major obstacles restraining the fast‐charging capability and low‐temperature adaptability of lithium‐ion batteries. In this work, through‐hole carbon spheres (THCS) synthesized by coaxial electrospinning and the following template sacrifice method are employed as a pore‐forming agent on graphite surfaces for the first time. The established gradient porosity architecture endows graphite anode with interconnected conductive networks and abundant Li<jats:sup>+</jats:sup> transport channels. Therefore, the THCS pouch cell exhibits fast charging capability (charging efficiency of 49.2% at 5 C), superior cycling stability (96% capacity retention after 500 cycles at 1 C), and low‐temperature adaptability (high lithium plating resistance at −10 °C). By contrast, severe lithium‐plating behavior is observed in the blank pouch cell under the same testing conditions. It is believed that the facile and scalable gradient pore structure manufacturing technology will succeed in promoting the fast‐charging capability and low‐temperature adaptability of commercial Li‐ion batteries.\",\"PeriodicalId\":111,\"journal\":{\"name\":\"Advanced Energy Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":24.4000,\"publicationDate\":\"2024-08-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Energy Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1002/aenm.202403164\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Energy Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/aenm.202403164","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Design of Gradient Porosity Architecture with Through‐Hole Carbon Spheres to Promoting Fast Charging and Low‐Temperature Workable Lithium‐Ion Batteries
The reduced surface porosity of highly compacted graphite anode after calendering is one of the major obstacles restraining the fast‐charging capability and low‐temperature adaptability of lithium‐ion batteries. In this work, through‐hole carbon spheres (THCS) synthesized by coaxial electrospinning and the following template sacrifice method are employed as a pore‐forming agent on graphite surfaces for the first time. The established gradient porosity architecture endows graphite anode with interconnected conductive networks and abundant Li+ transport channels. Therefore, the THCS pouch cell exhibits fast charging capability (charging efficiency of 49.2% at 5 C), superior cycling stability (96% capacity retention after 500 cycles at 1 C), and low‐temperature adaptability (high lithium plating resistance at −10 °C). By contrast, severe lithium‐plating behavior is observed in the blank pouch cell under the same testing conditions. It is believed that the facile and scalable gradient pore structure manufacturing technology will succeed in promoting the fast‐charging capability and low‐temperature adaptability of commercial Li‐ion batteries.
期刊介绍:
Established in 2011, Advanced Energy Materials is an international, interdisciplinary, English-language journal that focuses on materials used in energy harvesting, conversion, and storage. It is regarded as a top-quality journal alongside Advanced Materials, Advanced Functional Materials, and Small.
With a 2022 Impact Factor of 27.8, Advanced Energy Materials is considered a prime source for the best energy-related research. The journal covers a wide range of topics in energy-related research, including organic and inorganic photovoltaics, batteries and supercapacitors, fuel cells, hydrogen generation and storage, thermoelectrics, water splitting and photocatalysis, solar fuels and thermosolar power, magnetocalorics, and piezoelectronics.
The readership of Advanced Energy Materials includes materials scientists, chemists, physicists, and engineers in both academia and industry. The journal is indexed in various databases and collections, such as Advanced Technologies & Aerospace Database, FIZ Karlsruhe, INSPEC (IET), Science Citation Index Expanded, Technology Collection, and Web of Science, among others.