Speakers

Pre-lithiation Strategies to Enable High Energy Density Li-ion Batteries

CSE Web content; Christopher Johnson
Christopher S. Johnson
Argonne National Laboratory
Dec. 1 09:30~10:00

Abstract

Dose, L. Zhang, J. Blauwkamp, W. Lu, and C. S. Johnson*

Silicon containing anodes employed in Li-ion cells are known to dramatically boost the energy density of a full LIB battery by providing a high intrinsic capacity via LixSi intermetallic alloy formation/utilization compared to capacity-limited graphite anodes.  However, because a  >300% volume change takes place between (de)lithiated LixSi states, an irreversible trapping of cyclable Li in the full cell occurs, negatively impacting performance, potentially lowering cycle life.  Moreover, electrode slippage happens whereby the lithium inventory in the battery is compromised, and less cathode capacity can be utilized.  In this work we (1) first assess Li-inventory trends from the use of LiFePO4 thick electrodes versus thin 15%Si•graphite anodes, (2) evaluate chemically pre-lithiated 4-V and 5-V spinels in full cells, and (3) implement high-capacity (>700 mAh/g) lithium iron oxide Li5FeO4 anti-fluorite materials as a pre-lithiation additive in the cathode.  We will report the findings of this study in this presentation.

 

Education

  • 1992, Ph. D. Inorganic Chemistry Northwestern University, Evanston, IL U.S.A.
    – Thesis: Interfacial Electron Transfer Reactions of Metal Oxide Electrodes and the Synthesis and Characterization of cis-Dioxorhenium(V) Complexes
    – Advisor: Morrison Professor Dr. Joseph Hupp
  • 1987, B.S. Chemistry University of North Carolina, Chapel Hill, NC U.S.A.
    Advisor: Kenan Professor Dr. Royce Murray

 

Professional Career

  • 2014-Present, Argonne National Laboratory, Group Leader, Materials Research, Chemical Sciences and Engineering Division (CSE)
  • 2016-Present, Argonne National Laboratory, Senior Chemist
  • 1997-2016, Argonne National Laboratory, Chemist
  • 1994-1997, Argonne National Laboratory, Assistant Chemist
  • 1992-1994, Argonne National Laboratory, Postdoctoral Appointee
  • 1987-1992, Northwestern University, Graduate Associate
  • 1987, The Procter & Gamble Company Summer ACS Analytical Program, Intern
  • 1983-1987, University of North Carolina at Chapel Hill, Undergraduate researcher

 

Awards and Honors

  • 2017, Fellow of The Electrochemical Society
  • 2009, R&D 100 Award (“Composite Cathode Materials”)
  • 2007, Chemical & Engineering News (C&EN) Science Technology Highlight “News of the Week”; May 14, 2007 “Anomalous Capacity of High-Energy Cathodes”
  • 2006, International Battery Materials Association (IBA) Research Award
  • 2009, DOE Technical Poster Award – Argonne summer 2009 intern Ms. Emma Wisniewski-Barker
  • 2000, Argonne National Laboratory Pacesetter Award
  • 1995, Argonne National Laboratory Pacesetter Award
  • 1991, DOE Summer Fellowship Award, The Electrochemical Society