Four REACT fellows, University of Pennsylvania graduate students currently invited in GIANT labs, will give “teaching talks” on July 18, 11.30am to 2pm at GreEn-ER (room 2A003).
11.30am – The Future of Energy Storage: Single ion-conducting Solid Polymer Electrolytes
Benjamin A. Paren, Penn, CEA Liten
Rising global demand for energy, coupled with increasing capacity in generation technologies like wind and solar, have created a need for energy storage beyond the batteries in our cellphones and electric vehicles. This brief overview of the status of energy storage costs and needs discusses single ion-conducting solid polymer electrolytes (SPEs) as a potential solution to some of the issues associated with batteries in use today. SPEs are non-volatile, unlike liquid electrolytes, and are more mechanically stable than the liquid electrolytes commonly used in Li-ion batteries. The single ion-conducting SPEs introduced in this talk may facilitate ion transport to enhance the performance over traditional SPEs and serve as an alternative to current commercial electrolyte materials.
12pm – Polymer Nanocomposites with Additive Polymer Grafted Nanoparticles
Shawn Maguire, Penn, CNRS INAC
Polymer nanocomposites (PNCs) containing additive nanoparticles (NPs) have received increasing attention lately because of their broad applicability. Relative to their macroscopic counterparts, NPs have a higher surface area to volume ratio resulting in a wide range of functionality. The range of functionality reaches into mechanical, magnetic, optical, and electrical properties. As a result, these nanocomposites are promising candidates for various applications including drug delivery, water filtration and purification, and energy storage and generation. However, a major issue with PNCs is the difficulty in controlling the spatial arrangement of the nanoparticles within the polymer matrix as inconsistencies greatly impact the material properties. By analyzing model binary and ternary nanocomposite systems, the fundamental thermodynamics that govern these systems are elucidated, allowing for precise control over the placement and alignment of the NPs.
12.30-1pm: lunch break (bring your own – free coffee)
1pm – Nanoparticle dynamics in hydrogels to model diffusion in biofilms
Katie Rose, Penn, LMGP
Abstract coming shortly
1.30pm – Probing the mechanism of polymer infiltration in nano-confined environment using neutron reflectometry
Emily Lin, Penn, ILL
Because polymer nanoparticle composites (PNC) have enhanced mechanical properties, selectivity, and permeability, they have become an interesting candidate for advanced water filtration membranes. Recent innovation in producing these PNC using solvent-driven infiltration of polymer (SIP) process allows for room-temperature, scalable manufacturing of these thin films. However, the mechanisms by which the polymer infiltrates the nanoparticle layer is not well understood. Previous research in this area using elipsometry has not provided satisfactory resolution. In this study, we aim to understand the infiltration mechanism by investigating SIP kinetics using neutron reflectometry.
The 20′ talks are designed for undergraduate students, and the event is open to all. Bring your own lunch!