Emerging Technologies 2018 Session Listing
The program is subject to change in the weeks leading up to the conference. Check back here for the latest schedule, or follow us on Twitter for real-time notice of updates to the program.
We plan to have a firm program available no later than February 5, 2018.
Session A3a: Energy Harvesting and Storage
Start Time: 13:30, Thursday, May 10
Chaired by Chair to be Announced
- Terry J. Hendricks, NASA
A universe of energy: emerging technologies to expand our energy "toolbox" for planet earth, our solar system, and beyond
- Darren Frew, BC Bioenergy Network
Stop wasting waste
- Karin Hinzer, University of Ottawa
High efficiency photovoltaics
- Cengiz Ozkan, University of California, Riverside
Design of materials for advanced energy storage
The global electrochemical energy storage market ranging from electric vehicles and personal electronics to physical grid storage and defense applications demands the development of new classes of materials for fabricating high performance batteries and supercapacitors. I will describe innovative approaches for the design and synthesis of nanostructured materials towards enhanced reversible capacity; superior rate performance and cycling stability; superior gravimetric capacitance; and enhanced energy density and power density. Hierarchical three dimensional graphene hybrid materials which possess characteristics including ultra large surface area, tunability, mechanical durability and high conductivity are appealing to diverse energy storage systems. Integration of nanostructured pseudocapacitive metal oxides received a lot of attention recently due to their superior electrochemical performance. In order to realize high energy density supercapacitors, we developed a scalable method to fabricate MGM (graphene/MWNT/MnO2) and RGM (graphene/MWNT/RuO2) hybrid systems. The high specific/areal capacitance and extended operational voltage window of 1.5 V lead to an exceptionally high energy density of 39.28 Whkg-1 and power density of 128 kWkg-1. Next, I will talk about three-dimensional cone-shaped carbon nanotube clusters decorated with amorphous silicon for lithium ion battery anodes. Innovative silicon decorated cone-shaped CNT clusters on graphene (SCCC) are prepared by chemical vapor deposition (CVD) with subsequent inductively coupled plasma (ICP) treatment, followed by depositing amorphous silicon onto the carbon nanotube-graphene templates via magnetron sputtering. The seamless connection between silicon decorated CNT cones and the graphene substrate facilitates charge transfer in the system and provides a binder-free technique for preparing lithium ion battery (LIB) anodes. Lithium ion batteries based on this novel 3D SCCC architecture demonstrated fast charging, a high reversible capacity of 1954 mAhg-1 and excellent cycling stability.
- Mihri Ozkan, University of California, Riverside
Sulfur cathode materials for lithium-sulfur batteries
In this study, silica-coated sulfur particles (SCSPs) were synthesized and characterized as a cathode material for Li—S batteries. The novel core—shell structure was fabricated in a facile 2-step wet chemical synthesis. The SCSP cathode showed superior cycling stability when coupled with mrGO (mildly reduced Graphene Oxide) as an additive, improving the capacity retention after 50 cycles from 440.8 mAh/g without mrGO to 763.2 mAh/g with mrGO. The electrochemical data also shows reduced capacity fading over 50 cycles, from 12.2 mAh/g per cycle without mrGO to 8.6 mAh/g per cycle with mrGO. During cycling, SCSPs are understood to fracture and release active material (S8), and mrGO helps to contain the ruptured particles, thereby improving cycling stability. By the 50th cycle, SCSPs experienced a 318.8 mAh/g boost in specific discharge capacity with the addition of mrGO. These improvements are attributed to the polysulfide inhibiting effects of SiO2 as well as the host of benefits provided by mrGO, similar to other work. Thus, SCSPs with the addition of mrGO show great promise in the application of low-cost, high energy density battery systems for portable electronics and electric vehicles.
- Walter Cicha, National Research Council (Walter.Cicha@nrc-cnrc.gc.ca)
- COFFEE BREAK
- Fangxing Li, University of Tennessee, Knoxville (email@example.com)
- Scott Plummer, RMS-Ross Co. (firstname.lastname@example.org)
- Adam Duong, Université du Québec à Trois Rivières (Adam.Duong@uqtr.ca)
Support from our sponsors allows us to provide additional special events and networking opportunities during our conferences.