scholarly journals Preparation of Poly-1-butene Nanofiber Mat and Its Application as Shutdown Layer of Next Generation Lithium Ion Battery

Polymers ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2267
Author(s):  
Hanjin Jeong ◽  
Sohee Kim ◽  
Manjae Gil ◽  
Sanghoon Song ◽  
Tae-Ho Kim ◽  
...  
Keyword(s):  
Pore Size ◽  
High Performance ◽  
Lithium Ion ◽  
Electrospinning Process ◽  
Next Generation ◽  
Melt Electrospinning ◽  
Alpha Olefin ◽  
Nanofiber Web ◽  
Nonwoven Fiber ◽  
High Processing

Nonwoven nanofiber webs from polyolefin show great potential in various fields such as nanofilters, high performance membranes and separators in lithium ion batteries (LiB). Although nonwoven microfiber webs can be obtained by the well-established melt-blown method, it is relatively difficult to produce nonwoven nanofiber web using polyolefin (polyethylene and polypropylene). There have been several reports on the preparation of polyolefin nanofibers by melt-electrospinning, although this approach presents several intrinsic disadvantages, i.e., high processing costs, the requirement of complex equipment, and poor control over pore size or fiber diameter. Solution-based electrospinning has the potential to overcome the drawbacks of melt-electrospinning, but the solubility of most polyolefin is poor. In this study, we found that poly-1-butene, a member of the poly(alpha-olefin) family, can be used in the electrospinning process. We set the concentration of the polymeric solution for electrospinning at 0.65–1.7 g/mL. Here, we report on the fabrication of nonwoven fiber webs composed of poly-1-butene and their copolymers. The diameter of the nonwoven fiber mat was 0.2–0.4 μm, which can be applicable for shutdown layer. As a representative application, we prepared a poly-1-butene nanofiber separator with an appropriate pore size by electrospinning for use as the shut-down layer of a next-generation LiB. The PB-based nanofiber mat provided shutdown ability at around 100 to 120 °C.

scholarly journals Melt Electrospinning of PET and Composite PET-Aerogel Fibers: An Experimental and Modeling Study

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4699
Author(s):  
Lasse Christiansen ◽  
Leonid Gurevich ◽  
Deyong Wang ◽  
Peter Fojan
Keyword(s):  
High Performance ◽  
Fem Simulation ◽  
Large Change ◽  
Electrospinning Process ◽  
Fiber Formation ◽  
Polymer Fibers ◽  
Fiber Types ◽  
Melt Electrospinning ◽  
Aerogel Composite ◽  
Pharmaceutical Industries

Increasingly advanced applications of polymer fibers are driving the demand for new, high-performance fiber types. One way to produce polymer fibers is by electrospinning from polymer solutions and melts. Polymer melt electrospinning produces fibers with small diameters through solvent-free processing and has applications within different fields, ranging from textile and construction, to the biotech and pharmaceutical industries. Modeling of the electrospinning process has been mainly limited to simulations of geometry-dependent electric field distributions. The associated large change in viscosity upon fiber formation and elongation is a key issue governing the electrospinning process, apart from other environmental factors. This paper investigates the melt electrospinning of aerogel-containing fibers and proposes a logistic viscosity model approach with parametric ramping in a finite element method (FEM) simulation. The formation of melt electrospun fibers is studied with regard to the spinning temperature and the distance to the collector. The formation of PET-Aerogel composite fibers by pneumatic transport is demonstrated, and the critical parameter is found to be the temperature of the gas phase. The experimental results form the basis for the electrospinning model, which is shown to reproduce the trend for the fiber diameter, both for polymer as well as polymer-aerogel composites.

Facile template-free synthesis of 3D porous MnO/C microspheres with controllable pore size for high-performance lithium-ion battery anodes

2014 ◽  
Vol 2 (26) ◽  
pp. 10000-10006 ◽  
Author(s):  
Kai Su ◽  
Chao Wang ◽  
Honggang Nie ◽  
Yan Guan ◽  
Feng Liu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Pore Size ◽  
Lithium Ion Battery ◽  
Anode Materials ◽  
High Performance ◽  
Lithium Ion ◽  
Template Free

3D porous MnO/C anode materials with controllable pore size are synthesized for effectively optimizing the electrochemical performance.

A review on silicon nanowire-based anodes for next-generation high-performance lithium-ion batteries from a material-based perspective

2020 ◽  
Vol 4 (4) ◽  
pp. 1577-1594 ◽  
Author(s):  
Yang Yang ◽  
Wei Yuan ◽  
Wenquan Kang ◽  
Yintong Ye ◽  
Qiqi Pan ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
High Performance ◽  
Silicon Nanowire ◽  
Lithium Ion ◽  
Next Generation

Various materials incorporated into SiNW-based anodes for LIBs through doping or compositing and their electrochemical effects are discussed.

Recent progress in the synthesis of graphene and derived materials for next generation electrodes of high performance lithium ion batteries

2019 ◽  
Vol 75 ◽  
pp. 100786 ◽  
Author(s):  
Rajesh Kumar ◽  
Sumanta Sahoo ◽  
Ednan Joanni ◽  
Rajesh Kumar Singh ◽  
Wai Kian Tan ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
High Performance ◽  
Recent Progress ◽  
Lithium Ion ◽  
Next Generation

scholarly journals A Review of Recent Advancements in Electrospun Anode Materials to Improve Rechargeable Lithium Battery Performance

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2035
Author(s):  
Byoung-Sun Lee
Keyword(s):  
Lithium Ion Battery ◽  
Anode Materials ◽  
Lithium Ion ◽  
Processing Technique ◽  
Electrospinning Process ◽  
Next Generation ◽  
Simple Processing ◽  
Graphite Anodes ◽  
Technological Developments ◽  
Considerable Impact

Although lithium-ion batteries have already had a considerable impact on making our lives smarter, healthier, and cleaner by powering smartphones, wearable devices, and electric vehicles, demands for significant improvement in battery performance have grown with the continuous development of electronic devices. Developing novel anode materials offers one of the most promising routes to meet these demands and to resolve issues present in existing graphite anodes, such as a low theoretical capacity and poor rate capabilities. Significant improvements over current commercial batteries have been identified using the electrospinning process, owing to a simple processing technique and a wide variety of electrospinnable materials. It is important to understand previous work on nanofiber anode materials to establish strategies that encourage the implementation of current technological developments into commercial lithium-ion battery production, and to advance the design of novel nanofiber anode materials that will be used in the next-generation of batteries. This review identifies previous research into electrospun nanofiber anode materials based on the type of electrochemical reactions present and provides insights that can be used to improve conventional lithium-ion battery performances and to pioneer novel manufacturing routes that can successfully produce the next generation of batteries.

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