Choongho Yu

Associate Professor

Gulf/Oil Thomas A. Dietz Career Development Professor

Choongho Yu

Office: MEOB 321
Phone: 979.862.1073
Fax: 979.845.3081
Email: chyu@tamu.edu

Research Webpage
Google Scholar Profile

Research Interests

  • Energy conversion
    • Thermoelectric energy harvesting and cooling:
      – Material synthesis (organic and inorganic materials)
      – Thermoelectric device fabrication
    • Fuel cells:
      – Microbial fuel cell and wastewater treatment
      – Proton exchange membrane fuel cells with novel nanostructured electrodes
    • Piezoelectric energy conversion:
      – Reduction of noise caused by mechanical vibration
      – Energy harvesting from vibration
  • Energy storage
    • Li-S batteries:
      – High capacity and low-cost carbon nanotube sponge based batteries
    • Li-Air:
      – Porous multi-dimensional carbon electrodes with solid electrolytes for stable and safe operation
    • Supercapacitor:
      – Thermally self-chargeable flexible energy storage
  • Thermal and electrical transport in nanostructured materials (1D, 2D materials)
  • Thermal management
  • Design and fabrication of nano/micro-electromechanical systems and sensors

Education

  • Ph.D. Mechanical Engineering, University of Texas at Austin, 2004
  • M.S. Mechanical Engineering, Korea University, Korea, 1999
  • B.S. Mechanical Engineering, Korea University, Korea, 1997

Selected Publications

G. Yang, C. Erbay, S.-I. Yi, P. de Figueiredo, R. Sadr, A. Han, C. Yu, “Bifunctional nano-sponges serving as non-precious metal catalysts and self-standing cathodes for high performance fuel cell applications,” Nano Energy, 22, 609-614 (2016).

A. S. Tazebay, S.-I. Yi, J. K. Lee, H. Kim, J.-H. Bahk, S. L. Kim, S.-D. Park, H. S. Lee, A. Shakouri, C. Yu, “Dissimilar thermal transport driven by extraneous nanoparticles and phase segregation in nanostructured Mg2(Si,Sn) and estimation of optimum thermoelectric performance,” ACS Appl. Mater. Inter., 8, 7003-7012 (2016).

H. Wang, J.-H. Hsu, S.-I. Yi, S. L. Kim, K. Choi, G. Yang, C. Yu, “Thermally driven large n-type voltage responses from hybrids of carbon nanotubes and poly(3,4-ethylenedioxythiophene) with tetrakis(dimethylamino)ethylene,” Adv. Mater., 27, 6855-6861 (2015).

S. Jee, W. Choi, C. H. Ahn, G. Yang, H. K. Cho, J.-H. Lee, C. Yu, “Enhanced oxygen reduction and evolution by in-situ decoration of hematite nanoparticles on carbon nanotube cathode for high-capacity nonaqueous lithium-oxygen batteries,” J. Mater. Chem. A, 3, 13767-13775 (2015).

G. Yang, W. Choi, X. Pu, C. Yu, “Scalable synthesis of bi-functional high-performance carbon nanotube sponge catalysts and electrodes with optimum C-N-Fe coordination for oxygen reduction reaction,” Energy Environ. Sci., 8, 1799-1807 (2015).

H. Wang, X. Pu, C. Yu, “Simultaneously improving electrical conductivity and thermopower of polyaniline composites by utilizing carbon nanotubes as high mobility conduits,” ACS Appl. Mater. Inter., 7, 9589-9597 (2015).

X. Pu, G. Yang, C. Yu, “Liquid-type cathode enabled by 3D sponge-like carbon nanotubes for high energy density and long cycling life of Li-S batteries,” Adv. Mater., 26, 7456-7461 (2014).