A Novel Coating‐Extrusion Method Enabled, High Energy, Power Density, and Scalable Production in Monolithically Integrated Energy Storage Fibers
Abstract
AbstractThe rise of wearable electronics demands flexible energy storage solutions like flexible fiber energy storage devices (FESDs), known for their flexibility and portability. However, it remains difficult for existing fabrication methods (typically, finite‐coating, thermal‐drawing, and solution‐extrusion) to simultaneously achieve desirable electrochemical performances and fast production of FESDs. Here, a new scalable coating‐extrusion method is developed, utilizing a novel extruded spinneret with tapered apertures to create dual pressure zones. These attributes reduced porosity, enhanced electrode materials loading, and stabilized the interface between the fiber electrode and gel electrolyte of FESDs, enabling the integration of three functional electrodes for the fabrication of both fiber LMO‐LTP batteries and fiber LMO/LTP‐AC hybrid supercapacitor within a single energy storage device. The resultant multifunctional device achieved a high specific capacity of 89.4 mAh g−1 in battery mode and demonstrated excellent rate performance of 20 C with nearly 50% capacity retention in supercapacitor mode, with a production rate of 6000 km year−1.
Article Details
Authors (22)
Chuang Wang
Yanfeng Zhang
School of Chemistry, Institute of New Concept Sensors and Molecular Materials (INCSMM), State Key Laboratory of Fluorine & Nitrogen Chemicals, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education, Xi’an Key Laboratory of Sustainable Polymer Materials
Meng Liao
Pengzhou Li
Longmei Ma
State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Institute of Fiber Materials and Devices Department of Chemistry Fudan University Shanghai China
Haixin Yao
State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Institute of Fiber Materials and Devices Department of Chemistry Fudan University Shanghai China
Jiahe Qu
State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Institute of Fiber Materials and Devices Department of Chemistry Fudan University Shanghai China
Kun Zhang
Chuanfa Li
Tianbing Song
State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Institute of Fiber Materials and Devices Department of Chemistry and Laboratory of Advanced Materials Fudan University Shanghai 200438 China
Zhe Yang
Xiaocheng Gong
Haibo Jiang
Chengqiang Tang
Jianyou Feng
State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Institute of Fiber Materials and Devices Department of Chemistry and Laboratory of Advanced Materials Fudan University Shanghai 200438 China
Xiangran Cheng
State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Institute of Fiber Materials and Devices, and Laboratory of Advanced Materials Fudan University Shanghai China
Yi Jiang
Lei Ye
Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Republic of Singapore
Wei Li
Dongliang Chao
Laboratory of Advanced Materials, Aqueous Battery Center, College of Smart Materials and Future Energy
Huisheng Peng
Bingjie Wang