Molecular design principles for polymeric binders in silicon anodes

2020 ◽  
Vol 5 (4) ◽  
pp. 709-724 ◽  
Author(s):  
Andrea Miranda ◽  
Kasturi Sarang ◽  
Bolormaa Gendensuren ◽  
Eun-Suok Oh ◽  
Jodie Lutkenhaus ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Molecular Design ◽  
Electronic Conductivity ◽  
Design Principles ◽  
Electrochemical Stability ◽  
Silicon Anodes ◽  
Polymer Binders ◽  
Electrolyte Uptake ◽  
Polymeric Binders

We review molecular design principles for polymer binders for silicon anodes. Their impact on performance is complex and includes mechanical properties, adhesion, electrolyte uptake, ionic and electronic conductivity, and electrochemical stability.

Molecular design principles of ionic liquids with a sulfonyl fluoride moiety

2021 ◽  
Vol 45 (5) ◽  
pp. 2443-2452 ◽  
Author(s):  
David J. Siegel ◽  
Grace I. Anderson ◽  
Noah Cyr ◽  
Daniel S. Lambrecht ◽  
Matthias Zeller ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Molecular Design ◽  
Design Principles ◽  
New Family ◽  
Sulfonyl Fluoride

New family of SO2F-functionalized ionic liquids.

scholarly journals High-strength and fibrous capsule–resistant zwitterionic elastomers

2021 ◽  
Vol 7 (1) ◽  
pp. eabc5442
Author(s):  
Dianyu Dong ◽  
Caroline Tsao ◽  
Hsiang-Chieh Hung ◽  
Fanglian Yao ◽  
Chenjue Tang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mechanical Strength ◽  
High Strength ◽  
Design Principles ◽  
Fibrous Capsule ◽  
High Mechanical Strength ◽  
Capsule Formation ◽  
Locking Mechanism ◽  
Fibrous Capsule Formation

The high mechanical strength and long-term resistance to the fibrous capsule formation are two major challenges for implantable materials. Unfortunately, these two distinct properties do not come together and instead compromise each other. Here, we report a unique class of materials by integrating two weak zwitterionic hydrogels into an elastomer-like high-strength pure zwitterionic hydrogel via a “swelling” and “locking” mechanism. These zwitterionic-elastomeric-networked (ZEN) hydrogels are further shown to efficaciously resist the fibrous capsule formation upon implantation in mice for up to 1 year. Such materials with both high mechanical properties and long-term fibrous capsule resistance have never been achieved before. This work not only demonstrates a class of durable and fibrous capsule–resistant materials but also provides design principles for zwitterionic elastomeric hydrogels.

scholarly journals Peptide-based coacervates as biomimetic protocells

2021 ◽  
Vol 50 (6) ◽  
pp. 3690-3705
Author(s):  
Manzar Abbas ◽  
Wojciech P. Lipiński ◽  
Jiahua Wang ◽  
Evan Spruijt
Keyword(s):  
Phase Separation ◽  
Molecular Design ◽  
Design Principles ◽  
Peptide Derivatives

This tutorial review describes molecular design principles for peptides and peptide derivatives undergoing phase separation and highlights the potential of the resulting coacervate protocells.

Mechanically Robust and Superior Conductive n-Type Polymer Binders for High-performance Micro-Silicon Anodes in Lithium-Ion Batteries

2021 ◽  
Author(s):  
Yuanyuan Yu ◽  
Jiadeng Zhu ◽  
Ke Zeng ◽  
Mengjin Jiang
Keyword(s):  
Lithium Ion Batteries ◽  
High Performance ◽  
Lithium Ion ◽  
Silicon Anodes ◽  
Polymer Binders ◽  
Nanostructured Silicon

Abstract text goes here. The abstract should be a single paragraph that summarises the content of the article Compared with nanostructured silicon (Si), Si microparticle (SiMP) has more commercial prospects...

scholarly journals Effect of Polymers on the Pharmaco-mechanical Properties of Direct Compressed Tablets with Ketoprofen

2019 ◽  
Vol 56 (1) ◽  
pp. 239-244
Author(s):  
Monica Iliuta Stamate ◽  
Ciprian Stamate ◽  
Daniel Timofte ◽  
Bogdan Ciuntu ◽  
Carmen Gafitanu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Drug Release ◽  
Methyl Cellulose ◽  
Physicochemical Characteristics ◽  
Direct Compression ◽  
Mechanical Parameters ◽  
Compression Method ◽  
Drug Substances ◽  
Polymeric Binders ◽  
Made In

In this study, the effect of polymers on the mechanical properties of ketoprofen extended drug release systems were studied. Many polymers are added in formulation of compressed tablets in order to improve the physicochemical characteristics of the drug release system. The samples were made in the form of cylindrical tablet about 9 mm in diameter, containing different mixtures of drug substances and excipients acording to seven formulations. Cylindrical tablets containing mixtures of ketoprofen and various types of polymers are made by direct compression method. Among the binders used were a series of different polymers like Kollidon va 64, hydroxypropyl methyl cellulose and sodium carboxyl methyl cellulose. Mechanical parameters such as hardness, mechanical strenght, friability and roughness were studied in order to determine how they are influenced by polymeric binders.

scholarly journals The interfacial structure and Young's modulus of peptide films having switchable mechanical properties

2007 ◽  
Vol 5 (18) ◽  
pp. 47-54 ◽  
Author(s):  
A.P.J Middelberg ◽  
L He ◽  
A.F Dexter ◽  
H.-H Shen ◽  
S.A Holt ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Young’S Modulus ◽  
Self Assembly ◽  
Molecular Design ◽  
Foam Stability ◽  
Young's Modulus ◽  
Interfacial Structure ◽  
Water Interface ◽  
Air Water Interface ◽  
Peptide Dissociation

We report the structure and Young's modulus of switchable films formed by peptide self-assembly at the air–water interface. Peptide surfactant AM1 forms an interfacial film that can be switched, reversibly, from a high- to low-elasticity state, with rapid loss of emulsion and foam stability. Using neutron reflectometry, we find that the AM1 film comprises a thin (approx. 15 Å) layer of ordered peptide in both states, confirming that it is possible to drastically alter the mechanical properties of an interfacial ensemble without significantly altering its concentration or macromolecular organization. We also report the first experimentally determined Young's modulus of a peptide film self-assembled at the air–water interface ( E =80 MPa for AM1, switching to E <20 MPa). These findings suggest a fundamental link between E and the macroscopic stability of peptide-containing foam. Finally, we report studies of a designed peptide surfactant, Lac21E, which we find forms a stronger switchable film than AM1 ( E =335 MPa switching to E <4 MPa). In contrast to AM1, Lac21E switching is caused by peptide dissociation from the interface (i.e. by self-disassembly). This research confirms that small changes in molecular design can lead to similar macroscopic behaviour via surprisingly different mechanisms.

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