Energy Materials for Sustainable Development: Radiative and Electrochemical Conversion/Storage Batteries
Sponsored by: ACerS Energy Materials and Systems Division
Program Organizers: Krista Carlson, University of Nevada, Reno; Armin Feldhoff, Leibniz University Hannover; Kyle Brinkman, Clemson University; Eva Hemmer, University of Ottawa; Nikola Kanas, BioSense Institute; Kjell Wiik, Norwegian University of Science and Technology; Lei Zuo, Virgina Tech; Joshua Tong, Clemson University ; Danielle Benetti, Institut National de la Recherche Scientifique; Katherine Develos-Bagarinao, National Institute of Advanced Industrial Science and Technology; Soumi Chatterjee, Aditya Birla Science & Technology Company, Ltd
Monday 2:00 PM
October 10, 2022
Room: 413
Location: David L. Lawrence Convention Center
Session Chair: Jake Amoroso, Savannah River National Laboratory; Dhruba Panthi, Kent State University ; Zhezhen Fu, The Pennsylvania State University
2:00 PM Keynote
Highly Stable and Efficient Perovskite Solar Cells with Functional Nanocomposites: Yoon-Bong Hahn1; 1Jeonbuk National University
For highly stable and efficient perovskite solar cells, functional nanocomposites based on metal oxides, graphene and perovskite were developed. Compared to a reference cell, the composites-based devices showed an efficiency over 20 %. More importantly, the composites-based PSCs without encapsulation exhibited remarkable thermal- and photo-stability and long-term stability with retaining 95-99 % of the initial values of photovoltaic parameters with sustaining over 300 days under ambient conditions. However, most PSCs contain harmful lead (Pb). Recently, Sn-based PSCs have received much attention as a promising lead-free alternative, but Sn2+ is rapidly oxidized to Sn4+ in oxygen and moisture, causing a serious problem of poor device performance and stability. To address this, we proposed a novel approach, i.e. fabrication of the Sn-based PSCs with composites made of mixed-organic-cation Sn halide perovskite and graphene-Sn quantum dots. The composite-based champion device showed 55% efficiency improvement and significant reproducibility and stability improvement.
2:40 PM
Sustainable Bio-Engineered Magnetoelectric Nanogenerator to Convert Ambient Stray Magnetic Noise to Electricity: Ojodomo Achadu1; 1University of Warwick
We are surrounded by low-frequency magnetic fields generated by electrical power lines and consumer electronics. As a by-product of electric current flow, the stray magnetic field causes electromagnetic interference and noise pollution, threatening data security and human health. Similar to sunlight and wind energy, the abundant electromagnetic waste energy can be renewably harvested by using electromagnetic nanogenerators and converted into kinetic energy and useful electricity. Recently, bio-inspired commodity polymer hybrids utilizing bacteria and DNA, as fillers, exhibit high power output and an impressive energy conversion efficiency. This shed lights on the prospects of deploying bio-engineered piezoelectric polymers materials for fabricating energy generators and smart sensors. To overcome the current technical limitations of inorganic materials –based magnetic energy generators, our work develops soft and flexible magneto-mechano-electric (MME) generators by integrating novel 3D nanostructured magnetic materials to bio-organic-inspired semicrystalline organic piezoelectric polymers for efficient and sustainable magnetic energy harvesting and conversion.
3:00 PM
Low-temperature Integration of Oxide-based All-solid-state Batteries Using a Ceramic Binder: Junteng Du1; Angel Burgos1; Jae Chul Kim1; 1Stevens Institute of Technology
An all-solid-state battery using an oxide-based solid-state electrolyte that has non-flammability, good ionic conductivity, and excellent (electro)chemical stability is one of the most promising systems for next-generation batteries. However, their cell integration processing faces challenges due to high-temperature requirements that leads to chemical crosstalk across interfaces, especially between an oxide cathode and an oxide solid electrolyte. In this presentation, we will demonstrate low-temperature integration of all-solid-state batteries to overcome the interface challenges. We employed a low-melting point ceramic material, lithium-rich oxychloride, and combine lithium lanthanum zirconate with lithium cobalt oxide. We found that infiltrating the molten ceramic binder greatly improves the solid-solid contact between particles in a cathode and the interfaces between the cathode and solid electrolyte, achieving 50 mAh/g at 90°C discharge. This research will provide a new direction for all-solid-state battery processing.
3:20 PM Break
3:40 PM
Molecular Precursors for Li2S as Cathode Material for Sustainable Energy Storage: Veronika Brune1; Sanjay Mathur1; Michael Wilhelm1; 1University of Cologne
Large-scale energy storage will play a key role in future energy technologies for sustainable energy supply. Among the innumerable energy-storage technologies, lithium-sulfur batteries has emerged as a promising alternative, caused by highly abundant sulfur, its economically price and non-toxicity. Recently, Li2S has received much attention as an electrochemically active cathode material in lithium-sulfur batteries because a higher level of safety can be ensured. Using synthesized compounds to combine lithium and sulfur already at a molecular level shows the advantages of preformed bonds and the opportunity of shielding and protecting the sensitive Li-S unit against oxidation by introducing a suitable ligand. Good solubility in various solvents enables simple handling and an innovative preoperational fabrication carbon embedded Li2S 1D fibers by electrospinning processes.Calcination of electrospun fibers provides Li2S loaded fiber mats, which shows capacity retention of 73% over 100 cycles and a capacity of about 400 mAh g–1 at 1 C.
4:00 PM
Iron Oxide Redox Cycling for Low-cost Iron-air Batteries: Samuel Pennell1; Jacob Mack1; David Dunand1; 1Northwestern University
Freeze-casting is a low-cost, scalable processing method capable of producing porous lamellar structures with an ideal morphology for gas reactions. The multiple oxidation states, low cost, and availability of iron oxide make it an attractive material for energy storage via redox cycling. However, the practicality of iron-based energy storage structures, such as iron-steam batteries, is limited by the high volumetric expansion incurred as metallic Fe transforms to Fe3O4, which leads to rapid densification and lack of gas access in traditional Fe/Fe3O4 powder beds. Freeze-cast structures can mitigate this deleterious effect via built-in expansion volume that allows for cyclic expansion/contraction while still allowing gas flow throughout the sample. We present recent advances in these structures by freeze-casting blends of iron oxide powders paired with either nickel-, cobalt-, or molybdenum oxide. These mixed-powder systems lend the structure additional strength and toughness during cycling, showing promise for long-term energy storage via redox cycling.