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Our research experts

Jake Christensen, Ph.D.

Clean mobility - it’s electrifying!

“Tragically, from a climate change perspective, fossil fuels will remain cheap and abundant for decades to come. To curtail automotive CO2 emissions, we need efficient electric vehicles powered by affordable and reliable electrochemical technologies. Evolutionary progress has been too slow; it is time for a revolution.”

Jake Christensen, Ph.D., Director

I direct the Energy Technologies department at the Research and Technology Center in North America and am the Chief Battery Modeling Engineer. My team develops electrochemical devices for reliable, affordable electromobility and clean, efficient use of our natural resources. We elucidate complex phenomena through modeling and simulation from the atom to system scale, fundamental material property measurement, and operando characterization.

Curriculum vitae

Department Director

2018

Leading a team developing battery management systems and fuel cell technology

Chief Expert, Battery Modeling

2016

Developed advanced multiphysics models of battery performance, aging, and abuse

Principal Engineer

2010

Investigated high-energy Li/S, Li/air, and solid-state battery technologies

Selected publications

  • An Efficient Parallelizable 3D Thermoelectrochemical Model of a Li-ion Cell

    J. Christensen et al. (2013)

    An Efficient Parallelizable 3D Thermoelectrochemical Model of a Li-ion Cell
    • J. Christensen; D. Cook; P. Albertus
    • Journal of the Electrochemical Society, vol. 166, issue 5
  • Efficient Conservative Numerical Schemes for 1D Nonlinear Spherical Diffusion Equations with Applications in Battery Modeling

    Y. Zeng et al. (2013)

    Efficient Conservative Numerical Schemes for 1D Nonlinear Spherical Diffusion Equations with Applications in Battery Modeling
    • Y. Zeng; P. Albertus; R. Klein; A. Kojic; M. Bazant; J. Christensen
    • Journal of the Electrochemical Society, vol. 166, issue 5
  • A Critical Review of Li/Air Batteries

    J. Christensen et al. (2012)

    A Critical Review of Li/Air Batteries
    • J. Christensen; P. Albertus; R. Sanchez-Carrera; T. Lohmann; B. Kozinsky; R. Liedtke; J. Ahmed; A. Kojic
    • Journal of the Electrochemical Society, vol. 166, issue 5
  • Algorithms for Advanced Battery-Management Systems

    N. Chaturvedi et al. (2010)

    Algorithms for Advanced Battery-Management Systems
    • N. Chaturvedi; R. Klein; J. Christensen; J. Ahmed; A. Kojic
    • IEEE Control Systems Magazine, vol. 30, issue 3
  • Modeling Diffusion-Induced Stress in Li-ion Cells with Porous Electrodes

    J. Christensen (2010)

    Modeling Diffusion-Induced Stress in Li-ion Cells with Porous Electrodes
    • Journal of the Electrochemical Society, vol. 166, issue 5
  • Experiments on and Modeling of Positive Electrodes with Multiple Active Materials for Lithium-ion Batteries

    P. Albertus et al. (2009)

    Experiments on and Modeling of Positive Electrodes with Multiple Active Materials for Lithium-ion Batteries
    • P. Albertus; J. Christensen; J. Newman
    • Journal of the Electrochemical Society, vol. 166, issue 5
  • A Mathematical Model of Stress Generation and Fracture in Lithium Manganese Oxide

    J. Christensen & J. Newman (2006)

    A Mathematical Model of Stress Generation and Fracture in Lithium Manganese Oxide
    • Journal of the Electrochemical Society, vol. 166, issue 5
  • Stress Generation and Fracture in Lithium Insertion Materials

    J. Christensen & J. Newman (2006)

    Stress Generation and Fracture in Lithium Insertion Materials
    • Journal of Solid-State Electrochemistry, vol. 10, issue 5, p. 293-319
  • Cyclable lithium and capacity loss in Li-ion cells

    J. Christensen & J. Newman (2005)

    Cyclable lithium and capacity loss in Li-ion cells
    • Journal of the Electrochemical Society, vol. 166, issue 5
  • A Mathematical Model for the Lithium-ion Negative Electrode Solid Electrolyte Interphase

    J. Christensen & J. Newman (2004)

    A Mathematical Model for the Lithium-ion Negative Electrode Solid Electrolyte Interphase
    • Journal of the Electrochemical Society, vol. 166, issue 5

Interview

Jake Christensen, Ph.D.

Jake Christensen, Ph.D.

Director

“Please tell us what fascinates you most about research.”

Research is about changing the reality of the world in which we live. It’s about making the unfathomable comprehensible, and the impossible possible. It is embarking on an opportunity to fail, repeatedly, while discovering truth along the way. And, with persistence and luck, it yields remarkable results.

Jake Christensen, Ph.D.

Jake Christensen, Ph.D.

Director

“What makes research done at Bosch so special?”

Research at Bosch can be very fundamental, but at the same time disciplined. What can I make out of this discovery that will help humankind? What tangible product or service will millions or billions of people use every day? These are the questions that direct our efforts.

Jake Christensen, Ph.D.

Jake Christensen, Ph.D.

Director

“What research topics are you currently working on at Bosch?”

Currently my team is, among other things, developing physics-based models and battery management systems for improving battery lifetime, safety, and charging rates in vehicles and consumer goods; discovering what limits lifetime and performance in fuel cells; and inventing electrochemical water purification devices. I’m fortunate to be working alongside dozens of exceptionally bright and creative individuals.

Jake Christensen, Ph.D.

Jake Christensen, Ph.D.

Director

“What are the biggest scientific challenges in your field of research?”

Batteries, fuel cells, and other electrochemical devices are remarkably complex materials systems with phenomena occurring on a wide range of length- and timescales. There is an inherent tension between the critical objectives of performance, lifetime, size, and cost for each technology. Typically, not one, but dozens of challenges need to be solved to create a competitive product.

Jake Christensen, Ph.D.

Jake Christensen, Ph.D.

Director

“How do the results of your research become part of solutions "Invented for life"?”

Not only do we need to ensure that our products are durable (often at least a 15-year lifetime), we ultimately want to improve the lives of our customers. That means getting people where they need to be and doing what they need to do without compromising the global environment for future generations. Vehicle electrification plays a significant role.

Get in touch with me

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