Flexible Electrochemical Device Design for Mechanical Energy Harvesting

Sangtae Kim

• Flexible electrochemical device design for mechanical energy harvesting
• Characterization of solid-liquid interaction by in situ TEM:MEMS design for liquid encapsulation inside TEM environment and electrochemical characterization
• ab initio Thermodynamics of GaAs nanowire growth; change in equilibrium Wulff shape according to synthesis conditions and its implications to microstructural defects

• High-throughput, Materials-Genome based screening of Na-ion battery electrodes by Density Functional Theory (screened over 10,000 possible candidates)
• Comparison of Na-ion electrodes with Li-ion electrodes in terms of battery properties

• Study electronic and catalytic behavior of solid oxide fuel cell electrodes fabricated by infiltration technique, via electrochemical impedance spectroscopy

• Among the top 5 teams of 2014 MIT MADMEC competition with working prototype built to fundamentally enhance environmental and energy sustainability

• Selected for full fellowship student for graduate studies (M.S./Ph.D.)

Publications

1. S. Kim, S.J. Choi, K. Zhao, H. Yang, G. Gobbi, S. Zhang, J. Li, “Electrochemically driven Mechanical Energy Harvesting”Nature Communications 2016 7 10146
2. S. Kim†, X. Ma†, S.P. Ong, G. Ceder, “A Comparison of Destabilization Mechanisms of the Layered NaxMO2 and LixMO2Compounds upon Alkali De-Intercalation”Physical Chemistry Chemical Physics, 2012 14 15571-15578 († equal contribution)
3. T.-H. Kil, S. Kim, D.-H. Jung, D.-M. Geum, S. Lee, S.-J. Jung, S. Kim, C. Park, J.-S. Kim, J.M. Baik, K.-S. Lee, C.Z. Kim, W.J. Choi, S.-H. Baek, “A Highly Efficient, Concentrating-Photovoltaic/Thermoelectric Hybrid Generator” Nano Energy 2017 37 242-247
4. M.-S. Noh, S. Kim, D.-K. Hwang, C.-Y. Kang, “Self-powered Flexible Touch Sensors based on PZT Thin Films using Laser Lift-off” Sensors and Actuators A2017 261 288-294
5. Y.G. Song†, Y.-S. Shim†,S. Kim, S.D. Han, H.G. Moon, M.S. Noh, K. Lee, H.R. Lee, J.-S. Kim, B.-K. Ju, C.-Y. Kang, “Downsizing Gas Sensors based on Semiconducting Metal Oxides: Effects of Electrodes on Gas Sensing Properties” Sensors and Actuators B2017248 949-956 (†equalcontribution)
6. S.D. Han, M.-S. Noh, S. Kim, Y.-S. Shim, Y.G. Song, K. Lee, H.R. Lee, S. Nahm, S.-J. Yoon, J.-S. Kim, C.-Y. Kang, “Versatile Approaches to Tune a Nanocolumnar Structure for Optimized Electrical Properties of In2O3 Based Gas Sensor” Sensors and Actuators B2017248 894-901
7. I. Jung, Y.-H. Shin, S. Kim, J. Choi, C.-Y. Kang, “Flexible Piezoelectric Polymer based Energy Harvesting System for Roadway Applications” Applied Energy2017197 222-229
8. K.P. So, D. Chen, A. Kushima, M. Li, S. Kim, Y. Yang, Z. Wang, J.G. Park, Y.H. Lee, R.I. Gonzalez, M. Kiwi, E.M. Bringa, S. Lin, J. Li, “Dispersion of Carbon Nanotubes in Aluminum Improves Radiation Resistance” Nano Energy2016 22 319-327
9. Y. Zhang, C. Huang, S. Kim, M. Golkaram, M.W.A. Dixon, L. Tilley, J. Li, S. Zhang, S. Suresh, “Multiple Stiffening Effects of Nano-Scale Knobs on Human Red Blood Cells Infected with Plasmodium Falciparum Malaria Parasite” Proceedings of National Academy of Sciences2015 112 19 6068-6073
10. S.P. Ong, V.L. Chevrier, G. Hautier, A. Jain, C. Moore, S. Kim, X. Ma, G. Ceder, “Voltage, Stability and Diffusion Barrier Differences between Sodium-Ion and Lithium-Ion Intercalation Materials”Energy and Environmental Sciences,2011 4 3680-3688

Invited Talks

1. S. Kim “Timescale Tunability in Mechanical Energy Harvesting” Materials Challenges in Alternative and Renewable Energy (MCARE), Jeju, Korea 2017
2. S. Kim “Electrochemically driven Mechanical Energy Harvesting” Department of Materials Science and Engineering, Seongkyunkwan University, Korea 2016
3. S. Kim “Timescale Tunability in Mechanical Energy Harvesting” Department of Materials Science and Engineering, Seoul National University, Korea 2016
4. S. Kim, X. Ma, S.P. Ong, G. Ceder “Understanding the Difference in Intercalation Behavior between Layered Na- and Li- Transition Metal Oxides” ECS PRiME Hawaii 2012

Conference and Poster Presentations

1. S. Kim, S.J. Choi, S. Zhang, J. Li “Timescale Tunability in Mechanical Energy Harvesting” oral presentation, MRS Spring Meeting, Phoenix 2016
2. S. Kim, S.J. Choi, K. Zhao, S. Zhang, J. Li “Electrochemically driven Mechanical Energy Harvesting” oral presentation, MRS Fall Meeting, Boston 2015
3. S. Kim, S.J. Choi, K. Zhao, S. Zhang, J. Li “Electrochemically driven Mechanical Energy Harvesting” ACS National Meeting, Boston 2015
4. S. Kim, S.J. Choi, K. Zhao, S. Zhang, J. Li “Mechanical Energy Harvesters with Extended Current Pulse Duration based on Electrochemically Alloyed Electrodes” MRS Spring Meeting,San Francisco 2015(Best Poster Award)
5. S. Kim, S.J. Choi, K. Zhao, S. Zhang, J. Li “Electrochemical Device Design to Mechanical Energy Harvesting” Materials Day at Center for Materials Science and Engineering, MIT 2014
6. J. Lee, S. Kim, J.C. Kim, G. Ceder “Investigation on the (de)lithiation mechanism of Li2MoO3 ECS PRiME Hawaii 2012
7. A.J. Toumar, W.D. Richards, S. Kim, X. Ma, X. Li, S.P. Ong, G. Ceder “First Principles Investigationsof the Electrochemical Properties of Sodium-Ion Cathode Materials” ECS PRiME Hawaii 2012
8. S. Kim, X. Ma, S.P. Ong, G. Ceder “Stability of O3 Type Layered Structure upon De-Intercalation: Effect of Li to Na Substitution” MRS Spring 2012
9. S.P. Ong, V. Chevrier, A. Jain, G. Hautier, C. Moore, S. Kim, X. Ma, G. Ceder “Na-ion versus Li-ionBattery Chemistries: Insights from First Principles Calculations” MRS Spring 2012

Teaching & Service

• Trained lab users on lab specific training on a regular basis and wrote the safety code of conduct as well as recommended lab practices for Ju Li group
• Constructed and maintained the safety web page for Ju Li group, including list of chemicals, safety rules and crime scene casebook.

• Instructed the field trip course (MSE 198) with 14 enrolled students; the course consisted of 4 field trips to local industries related to materials science with individual reports following the field trips