Composites for Energy Applications: Materials for Renewable Energy Applications 2022: Poster Session
Sponsored by: TMS Structural Materials Division, TMS: Composite Materials Committee
Program Organizers: Patrick Ward, Savannah River National Laboratory; Joseph Teprovich, California State University Northridge; Anthony Thompson, Savannah River National Laboratory; Simona Hunyadi Murph, Savannah River National Laboratory
Monday 5:30 PM
February 28, 2022
Room: Exhibit Hall C
Location: Anaheim Convention Center
Session Chair: Anthony Thompson, SRNL
D-17: Fabrication of Novel LiCrTiO4-MWCNTS Based Composite Electrodes for Flexible Li Ion Batteries: Prerna Chaturvedi1; Amarsingh Bhabu Kanagaraj1; Daniel Choi1; 1Khalifa University
The investigation and development of flexible power sources has motivated the development of flexible, lightweight, binder-free electrodes for Li-ion batteries (LIBs). Here, we are proposing the fabrication of free-standing, flexible and foldable multi- walled carbon nanotubes (MWCNT)/lithium chrominum titanate (LiCrTiO4, LCT) composite buckypaper by a facile, scalable, cost-effective and environmental friendly tape casting method. LiCrTiO4 powder was synthesized through solid state reaction. The structural and morphological studies were conducted using various techniques such as X-ray diffraction, Raman spectroscopy, scanning and transmission electron microscopy. The LCT-MWCNT composite buckypaper is demonstrated as anode material for flexible LIBs and shows initial discharge capacity of ~158 mA h g-1, comparable to theoretical capacity of LiCrTiO4 at 1 C rate. Furthermore, an excellent cyclic stability with ~96% capacity retention was exhibited at 1C (100 cycles) and 10C (500 cycles) rate, which is mainly attributed to enhanced electric and ionic transport during electrochemical reactions.
D-18: Preparation of Coal Liquefaction Residue/PAN Composite Carbon Nanofibers by Electrostatic Spinning: Xiao-Yan Zhang1; Tong-Xin Qiao1; Peng Li1; 1Zhengzhou University
Preparation of coal liquefaction residue/polyacrylonitrile (PAN) composite carbon nanofibers using extract from coal liquefaction residue (CLRE) and PAN. The structure and morphology of composite carbon nanofibers was analyzed by SEM and FT-IR. Due to the analysis on the properties of composite carbon fibers with different additive amounts, 10% of CLRE in the solution was considered as the optimized additive amounts, as integrated fiber morphology and homogeneous structure. With the increase of the additive amount of CLRE, the spinnability decreases, and reticular and foam-like structures were formed. However, the diameter of the obtained CLRE-PAN composite carbon fibers was smaller. Therefore, the optimization additive amount is 30%, carbonization temperature is 400℃, and fiber diameter ranges from 210 nm to 450 nm. The composite carbon nanofiber has good reversibility in the process of charge and discharge.
NOW ON-DEMAND ONLY – D-20: Seebeck Analysis of ALD Synthesized Thermoelectric Thin Films: Sadiya Tahsin1; Jameson Crouse2; Helmut1; Abdelmageed Elmustafa1; 1Old Dominion University; 2Dept. of Physics, College of William and Mary, Williamsburg, VA 23187
Thermoelectric materials have attracted significant attention due to their potential application in power generation and refrigeration systems, because they can convert thermal energy into electric energy from waste heat recovery. Thin thermoelectric films can be used to create thermoelectric generators, where the power they create does not result in any additional emissions. PbTe, PbSe and Sb2Te3, Bi2Te3 present excellent choices for thermoelectric energy harvesting devices. This study investigates Seebeck coefficient measurements of these thermoelectric thin films synthesized by Atomic Layer Deposition (ALD) technology. The efficiency of TE materials is expressed by the dimensionless thermoelectric figure of merit, ZT = S2σT/κ, where S is the Seebeck coefficient, σ is the electrical conductivity, and κ is the thermal conductivity. Because the crucial Seebeck coefficient factors directly into the equation to determine ZT by the power of two, it is imperative to optimize the thermoelectric thin film material for maximum Seebeck coefficient.