Effect of polymer blending and drawing conditions on properties of polyethylene separator prepared for Li-ion secondary battery

Ihm, Dae-Woo; Noh, Jaegeun; Kim, Jin‐Yeol

doi:10.1016/s0378-7753(02)00097-6

Cited by 100 publications

(58 citation statements)

References 2 publications

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“…45,46 The polyolefin includes polyethylene (PE), 47 polypropylene (PP) 48 and their blends such as PE-PP 49 and high density polyethylene (HDPE)-ultrahigh molecular polyethylene (UHMWPE). 50 Recently, a ceramic separator for better mechanical and thermal stability has been developed and commercialized. 51 …”

Section: Separatormentioning

confidence: 99%

Current and Prospective Li-Ion Battery Recycling and Recovery Processes

Heelan

Gratz²,

Zheng

et al. 2016

JOM

208

162

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The lithium ion (Li-ion) battery industry has been growing exponentially since its initial inception in the late 20th century. As battery materials evolve, the applications for Li-ion batteries have become even more diverse. To date, the main source of Li-ion battery use varies from consumer portable electronics to electric/hybrid electric vehicles. However, even with the continued rise of Liion battery development and commercialization, the recycling industry is lagging; approximately 95% of Li-ion batteries are landfilled instead of recycled upon reaching end of life. Industrialized recycling processes are limited and only capable of recovering secondary raw materials, not suitable for direct reuse in new batteries. Most technologies are also reliant on high concentrations of cobalt to be profitable, and intense battery sortation is necessary prior to processing. For this reason, it is critical that a new recycling process be commercialized that is capable of recovering more valuable materials at a higher efficiency. A new technology has been developed by the researchers at Worcester Polytechnic Institute which is capable of recovering LiNi x Mn y Co z O 2 cathode material from a hydrometallurgical process, making the recycling system as a whole more economically viable. By implementing a flexible recycling system that is closed-loop, recycling of Li-ion batteries will become more prevalent saving millions of pounds of batteries from entering the waste stream each year.

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Section: Separatormentioning

confidence: 99%

Current and Prospective Li-Ion Battery Recycling and Recovery Processes

Heelan

Gratz²,

Zheng

et al. 2016

JOM

208

162

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“…The wet process is applicable to both crystalline and amorphous polymers, and its resulting film is non-oriented for pore structure and mechanical strength. For semicrystalline polyolefin membranes, a stretching step can be added either before or after the extraction to achieve high porosity and large pore size [18][19][20][21]. It has been proven that the membranes produced by a process of stretching after extraction exhibit much larger pore size and air permeability than those produced by a process of stretching before extraction [21].…”

Section: Wet Processmentioning

confidence: 99%

“…For semicrystalline polyolefin membranes, a stretching step can be added either before or after the extraction to achieve high porosity and large pore size [18][19][20][21]. It has been proven that the membranes produced by a process of stretching after extraction exhibit much larger pore size and air permeability than those produced by a process of stretching before extraction [21]. With addition of the stretching process, the resulting pores become somewhat oriented.…”

Section: Wet Processmentioning

confidence: 99%

Manufacture and Surface Modification of Polyolefin Separator

Xue

Zhang

2015

Rechargeable Batteries

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“…The wet process for both crystalline and amorphous polymers can be performed as follows [28][29][30][31][32]: (a) the mixing of hydrocarbon liquid and other additives with polyolefin resins and heating, (b) the extrusion of the heated solution into a sheet, orientating the sheet uniaxially or biaxially, and (c) the extraction of the liquid with a volatile solvent to form the microporous structure [22,33]. For semi-crystalline polymers, the stretching step can be performed before/after the extraction step to achieve high porosity and large pore size [34]. The characteristics of commercial polyolefin-based microporous membranes used in LIPB are summarized in Table 1.…”

Section: General Featuresmentioning

confidence: 99%

Surface-Modified Membrane as A Separator for Lithium-Ion Polymer Battery

2010

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This paper describes the fabrication of novel modified polyethylene (PE) membranes using plasma technology to create high-performance and cost-effective separator membranes for practical applications in lithium-ion polymer batteries. The modified PE membrane via plasma modification process plays a critical role in improving wettability and electrolyte retention, interfacial adhesion between separators and electrodes, and cycle performance of lithium-ion polymer batteries. This paper suggests that the performance of lithium-ion polymer batteries can be greatly enhanced by the plasma modification of commercial separators with proper functional materials for targeted application.

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Effect of polymer blending and drawing conditions on properties of polyethylene separator prepared for Li-ion secondary battery

Cited by 100 publications

References 2 publications

Current and Prospective Li-Ion Battery Recycling and Recovery Processes

Current and Prospective Li-Ion Battery Recycling and Recovery Processes

Manufacture and Surface Modification of Polyolefin Separator

Surface-Modified Membrane as A Separator for Lithium-Ion Polymer Battery

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