Interfacial modification of a lightweight carbon foam current collector for high-energy density Si/LCO lithium-ion batteries

2017 ◽  
Vol 5 (25) ◽  
pp. 13168-13175 ◽  
Author(s):  
Zhengjiao Liu ◽  
Shuai Bai ◽  
Boli Liu ◽  
Pengqian Guo ◽  
Mingzhi Lv ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Active Layer ◽  
Lithium Ion ◽  
Current Collector ◽  
Carbon Foam ◽  
High Energy ◽  
High Energy Density ◽  
Interfacial Modification

A thin Ti layer was utilized to modify the interface between carbon foam current collector and Si active layer.

scholarly journals Rolling Press Enables Electrospun Fibers Based Binder-Free Electrodes with High Stability for Lithium Ion Batteries

2020 ◽  
Author(s):  
Yun Zhao ◽  
Yuqiong Kang ◽  
Changjian Deng ◽  
Xinyi Liu ◽  
Zheng Liang ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Current Collector ◽  
High Energy ◽  
High Energy Density ◽  
Universal Method ◽  
Electrospun Membrane ◽  
Binder Free

Abstract With the demand for higher energy density and smaller size lithium-ion batteries (LIBs), the development of high specific capacity active materials and the reduction of the usage of inactive materials are the main directions. Herein, a universal method is developed for binder-free electrodes for excellent stable LIBs by rolling the electrospun membrane directly onto the commercial current collector. The rolling process only makes the fiber web denser without changing the fiber structure, and the fiber web still maintains a porous structure. This strategy significantly improves the structural stability of the membrane compared to the direct carbonized electrospun membrane. Moreover, this method is suitable for a variety of polymerizable adhesive polymers, and each polymer can be composited with different polymers, inorganic salts, etc. The electrode prepared by this method can be stably cycled for more than 2000 cycles at a current density of 2500 mA g-1. This study provides a cost-effective and versatile strategy to design the LIB electrode with high energy density and stability for experimental research and practical application.

scholarly journals Rolling Press Enables Electrospun Fibers Based Binder-Free Electrodes with High Stability for Lithium Ion Batteries

2020 ◽  
Author(s):  
Yun Zhao ◽  
Yuqiong Kang ◽  
Changjian Deng ◽  
Xinyi Liu ◽  
Zheng Liang ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Current Collector ◽  
High Energy ◽  
High Energy Density ◽  
Universal Method ◽  
Electrospun Membrane ◽  
Binder Free

Abstract With the demand for higher energy density and smaller size lithium-ion batteries (LIBs), the development of high specific capacity active materials and the reduction of the usage of inactive materials are the main directions. Herein, a universal method is developed for binder-free electrodes for excellent stable LIBs by rolling the electrospun membrane directly onto the commercial current collector. The rolling process only makes the fiber web denser without changing the fiber structure, and the fiber web still maintains a porous structure. This strategy significantly improves the structural stability of the membrane compared to the direct carbonized electrospun membrane. Moreover, this method is suitable for a variety of polymerizable adhesive polymers, and each polymer can be composited with different polymers, inorganic salts, etc. The electrode prepared by this method can be stably cycled for more than 2000 cycles at a current density of 2500 mA g -1 . This study provides a cost-effective and versatile strategy to design the LIB electrode with high energy density and stability for experimental research and practical application.

Battery-on-Separator: A platform technology for arbitrary-shaped lithium ion batteries for high energy density storage

2021 ◽  
Vol 490 ◽  
pp. 229527
Author(s):  
Min Wang ◽  
Wentao Yao ◽  
Peichao Zou ◽  
Shengyu Hu ◽  
Haojie Zhu ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Platform Technology

scholarly journals Revisiting Olivine Phosphate and Blend Cathodes in Lithium Ion Batteries for Electric Vehicles

2021 ◽  
Author(s):  
Yujing Bi ◽  
Deyu Wang
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Electric Vehicles ◽  
Technology Development ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
And Performance ◽  
Battery Technology ◽  
Olivine Phosphate

As electric vehicle market growing fast, lithium ion batteries demand is increasing rapidly. Sufficient battery materials supplies including cathode, anode, electrolyte, additives, et al. are required accordingly. Although layered cathode is welcome in high energy density batteries, it is challenging to balance the high energy density and safety beside cost. As consequence, olivine phosphate cathode is coming to the stage center again along with battery technology development. It is important and necessary to revisit the olivine phosphate cathode to understand and support the development of electric vehicles utilized lithium ion batteries. In addition, blend cathode is a good strategy to tailor and balance cathode property and performance. In this chapter, blend cathode using olivine phosphate cathode will be discussed as well as olivine phosphate cathode.

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