Dr. Pierre Yao

Assistant Professor
Department of Mechanical Engineering
University of Delaware
334 Spencer Laboratory
Newark, DE 19716

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Executive Summary

Professor Yao’s research so far focuses on the design, fabrication, and characterization of energy materials for energy storage including Lithium-Oxygen and Lithium-Ion batteries. Professor Yao is particularly interested in the development and utilization of operando electrochemical tools such as operando diffraction and spectroscopy for quasi real-time understanding of energy materials. A sample of Professor Yao’s current research interests are: (i) understanding of battery materials using operando synchrotron tools, (ii) understanding of degradation mechanics in conversion anodes for Lithium-Ion batteries in tandem with novel material design to mitigate these identified degradation pathways, (iii) developing novel electrolyte systems for suppression of polysufide shuttling in Lithium-Sulfur batteries, (iv) modeling of coupled transport and thermodynamics in ion-intercalation energy storage materials, (v) application of data science tools to energy material discovery.

Prior to joining the faculty of Mechanical Engineering at the University of Delaware, Dr. Yao graduated with a Ph.D from the Massachusetts Institute of Technology in 2016 and completed two years as a postdoctoral researcher at the Argonne National Laboratory. Dr. Yao is also an Alumni of the University of Delaware Department of Mechanical Engineering where he received his Bachelor’s (Summa Cum Laude). During his Ph.D, Dr. Yao received five years of research funding from Toyota Motor Europe R&D Advanced Technologies.

Key Publications

Koffi P. C. Yao, James T. Frith, Sayed Youssef Sayed, Fanny Bardé, John R. Owen‡, Yang Shao-Horn, Nuria Garcia-Araez, Utilization of Cobalt Bis(terpyridine) Metal Complex as Soluble Redox Mediator in Li–O2 Batteries. Journal of Physical Chemistry C, 2016, 120 (30), pp 16290–16297. doi: 10.1021/acs.jpcc.6b02932

Forrest S Gittleson, Koffi P.C. Yao, David G Kwabi, Sayed Youssef Sayed, Won‐Hee Ryu, Yang Shao‐Horn, André D Taylor. Raman Spectroscopy in Lithium–Oxygen Battery Systems. ChemElectroChem 2015. doi: 10.1002/celc.201500218

Koffi P. C. Yao, Marcel Risch, Sayed Youssef Sayed, Yueh-Lin Lee, Jonathon Harding, Alexis Grimaud, Nir Pour, Zhichuan Xu, Jigang Zhou, Azzam Mansour, Fanny Bardé, Yang Shao-Horn. Solid-State Activation of Li2O2 oxidation Kinetics and Implications for Li-O2 batteries. Energy and Environmental Science, 2015. doi: 10.1039/C5EE00967G

Koffi P. C. Yao, Yi-Chun Lu, Chibueze V. Amanchukwu, David G. Kwabi, Marcel Risch, Jigang Zhou, Alexis Grimaud, Paula T. Hammond, Fanny Bardé, Yang Shao-Horn. The influence of transition metal oxides on the kinetics of Li2O2 oxidation in Li-O2 batteries: high activity of chromium oxides. Physical Chemistry Chemical Physics 2013. doi: 10.1039/c3cp53330a

Koffi P. C. Yao, David G. Kwabi, Ronald A. Quinlan, Azzam N. Mansour, Alexis Grimaud, Yueh-Lin Lee, Yi-Chun Lu, Yang Shao-Horn. Thermal stability of Li2O2 and Li2O for Li-air batteries: in situ XRD and XPS studies. Journal of the Electrochemical Society 2013, 160(6), A824–A831. doi:10.1149/2.069306jes

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