Kevin Charles Leonard

Associate Professor
Primary office:
785-864-1437
Learned Hall
Room 4132B
University of Kansas
1530 West 15th Street
Lawrence, KS 66045


Summary

Education

  • Post Doc: Center for Electrochemistry, The University of Texas at Austin
  • PhD: Materials Science, University of Wisconsin - Madison
  • MS: Materials Science, University of Wisconsin - Madison
  • BS: Chemical Engineering & Applied Mathematics, University of Wisconsin - Madison

Research Interests

Electrocatalysis

An electrocatalyst is a material which is used to catalyze an electrochemical reaction (i.e., an electron transfer oxidation or reduction reaction). Electrocatalysis is a crucial component to many different energy and industrial applications. In artificial photosynthesis (a process in which sunlight, water, and CO2 are converted to fuels or chemicals) electrocatalysts are used to improve the efficiency of the hydrogen evolution reaction, the oxygen evolution reaction, and/or CO2 reduction. In addition, electrocatalysts are used in fuel cells and metal-air batteries to catalyze the oxygen reduction reaction. Industrially, electrocatalysts are used in electrowinning (the process of extracting metals from their ores), electroplating (the process of coating a material usually with a thin layer of metal), and electrogalvanizing (a corrosion protection method  usually applied to stainless steel).

The research goals of the Leonard laboratory include developing new electrocatalysts based on earth-abundant materials for all of the above applications. This encompasses investigating new material compositions as well as novel morphologies based on nanomaterials. In addition, the aim is to improve the understanding of the mechanisms of electrochemical reactions and how they are affected by electrocatalyst properties.

Photoelectrocatalysis

As with electrocatalysis, photoelectrocatalysis is used in artificial photosynthesis (or solar fuels) applications. Here a semiconducting material absorbs photons (i.e., light) and creates electron/hole pairs which can be separated to carry out electrochemical reactions. The research goals in photoelectrocatalysis are finding and developing new semiconductor materials and nanoscale morphologies to improve the efficiency of photoelectrochemical reactions related to solar fuel applications.

Energy Storage

Energy storage devices (e.g. Li-ion batteries, flow-batteries, electrochemical capacitors) are used in applications ranging from portable consumer electronics to “grid-scale” energy storage. One energy storage device of interest is the electrochemical capacitor which typically has a higher power density and a longer cycle-life than the Li-ion battery, but a lower energy density. The development of new nano-scale materials could increase the energy density of electrochemical capacitors without sacrificing power density or cycle-life, which could have impacts on all areas of energy storage including hybrid electric and plug-in electric vehicles.

Scanning Electrochemical Microscopy (SECM)

The Leonard group utilizes scanning electrochemical microscopy (SECM) in the development and characterization of electrocatalysts and photoelectrocatalysts. Using SECM, one is able to very accurately determine the kinetics of electrochemical and photoelectrochemical reactions. In addition, mechanistic information can be obtained by the investigation of reaction intermediates. SECM is also used in electrocatalyst and photoelectrocatalyst screening.


Publications and Patents


Upcoming Events and Deadlines

Deadline to apply to 3MT | October 14th First Heat will take place on Thursday, October 24th 

Mark B. Shiflett Lecture on Refrigerants | Thursday, October 17th | Hancock Ballroom @ The Oread

Research Connections & Networking Event | Monday, October 21st | 11am - 12pm | 1131 Learned Hall

Special Seminar with Boelo Schurr from the University of Twente | Friday, October 25th | 1:00 - 1:50PM | 2420 LEEP2

Hospitality Suite at the Annual AIChE Conference | Sunday, November 10th | 7:30 - 9:30PM | Blue Spring Room, Hyatt Regency Orlando

Nick Reding's Final Thesis Defense | Monday, November 25th | 9:00 - 10:00AM | 1 Eaton (Dean's Conference Room)


CPE Weekly Graduate Seminar Schedule 

School of Engineering Events

KU Calendar