PlasticsEdge™ Lead Generation Program: Call 978-342-9000 for details or email [email protected]

Plastics-Polymer-News-Single-ion-conducting-polymer-electrolytes

ScienceDirect.com — Solid single-Li+-ion conducting polymer electrolytes are currently explored for safe high-temperature lithium batteries. In the present work we have prepared and studied materials based on alternating mesogen-like naphthalene sulfonate units interconnected by flexible poly(ethylene oxide) (PEO) segments in order to induce microphase separation and physical crosslinking.

These segmented polymers were readily prepared in polycondensations of a naphthalene diol sulfonate and chain-end chlorinated PEO. The ionic content of the final materials was conveniently controlled by using PEOs of different molecular weights. Analysis by X-ray scattering showed a morphology with nanoscopic domains of naphthalene sulfonate units dispersed in a matrix of amorphous PEO segments. The aggregation of the naphthalene sulfonate units increased with temperature up to at least 100 °C, while the crystallization of the PEO segments in some materials reversibly dissolved the naphthalene sulfonate domains upon cooling.

The crystallinity decreased and the glass transition temperature increased with decreasing PEO segment length, i.e., increasing in ionic content, because of increasing ionic coordination and a decreasing PEO segment length in-between the naphthalene sulfonate domains. At 80 and 120 °C, the present single-Li+-ion conductors reached conductivities up to 1.4·10−6 and 5.5·10−6 S cm−1, respectively, which after addition of 29 wt % triglyme increased to 2.9·10−6 and 8.2·10−6 S cm−1, respectively.

The combined results showed that the macromolecular design with ionic mesogen-like units that form stable physically cross-linked morphologies by interconnecting flexible polyether segments is advantageous for polymer electrolytes for safe high-temperature operation.

See the ‘Source Link’ for the full article

0 Comments

Submit a Comment

Your email address will not be published.

The Revolutionary Past of Plastics

daily.jstor.org — From disposable straws to lifesaving medical...

Essentra Extrusion Sold To Inter Primo In EUR16 Million Deal

LONDON (Alliance News) - Essentra PLC on Tuesday said is has...

A ‘cast PU elastomer’ that can be injection moulded

plasticsnewseurope.com/ — Lanxess AG has developed a low free...

Plastic straws rank low among consumer concerns

PlasticsToday.com — What do you feel guilty about? Since you’re...

Is Milacron Holdings Corp (NYSE:MCRN)’s Fuel Running Low?

Makdaily.com — The stock of Milacron Holdings Corp (NYSE:MCRN)...

Functional Natural and Synthetic Polymers

Advancedsciencenews.com — Highly specialized polymers with specific...

New Frontiers for Recyclable Polymers

Flinders University — Many modern plastics, rubbers and ceramics...

Krauss-Maffei Corp. president Paul Caprio stepping down

Canplastics.com — Paul Caprio, president of processing machinery...

Prodways Begins Work on Autonomous Dental 3D Printing

France — Since it was acquired by Groupe Gorgé in 2013, Prodways has...

KraussMaffei breaks ground on new Chinese plant

HAIYAN, China — German machinery manufacturer KraussMaffei Group has...