CTO at Sepion Technologies, a battery materials company focused on development of innovative polymer and electrolyte technologies to enable lithium batteries - both Li-ion and Li-metal! Sepion's patented polymer technology has interesting properties that permits free travel of lithium ions, but blocks nearly everything else. The polymer also has very consistent pore structure that we believe helps homogenize lithium concentration gradients during charge and discharge. The polymer layer is coated onto conventional base-layer separators, and intended to be cost-parity with a ceramic-coated separator. For Li-ion, Sepion's material blocks transition metals (making thermal events rarer), promotes electrolyte wetting, and reduces H2O content compared to ceramic-coated separators. For Li-metal, the material also facilitates safe use of liquid electrolyte, and brings Li-metal anodes to a world in which fast charge performance is paramount.Interested? Feel free to contact me!

Led development of Rivian's electric vehicle batteries. Developed and launched battery systems for Rivian’s award-winning R1T truck, R1S SUV, and Rivian Prime Van for Amazon. Reported to VP, Propulsion Systems.===Launched Rivian’s First Battery * Developed Rivian’s first battery, transforming prototypes into a validated battery for production – mules to SOP in 20 months *Nearly 50,000 vehicles on the road launched by my team (estimated June 2023) *Led development of a long-term battery roadmap that is expected to result in significant mass and cost savings from 2023-2028===Grew a World-Class Battery Team * Grew a seasoned Battery department from a start-up battery team via coaching, training, and 5x organic growth in 2 years (45→225 people) * Developed programs to support employees in Battery, including Career Development and Mentoring===Built Battery Labs * Deployed ~$100M CAPEX in battery test and analysis facilities at 5 sites in CA and IL – focus on rapid ROI, test safety and operational efficiency * Installed test capabilities include 17 pack testing chambers (capacity for 44 total packs), approximately 5000 cell testing channels, 3-axis pack vibration table, a cell abuse lab, dry room, analytical lab, more===Focused on Innovation * Served on Rivian’s IP Committee from early 2020 until 4/2023, reviewing most submitted patents * 106 invention disclosures in 2021-2022, ~50 patent applications from Battery department===Implemented Modern Development Practices * Implemented modern, robust processes to improve Rivian’s engineering practices for Battery * Instantiated methods for change management, risk mitigation, validation, and more

MISSION: Establish A123 into a market leader for automotive lithium ion batteries by identifying exciting new markets and developing winning products for those markets.CORPORATE PROFILE: Lithium-ion battery manufacturer with $500M annual revenue, approximately 50% CAGR, projecting > $1B annual by 2021. 2700 global employees.RESPONSIBILITY PROFILE: Hired by A123 in 2015 reporting directly to the CTO. Tasked with re-building the Product Development team following a 2013 bankruptcy, integrating with a China-based team, and developing a new portfolio of market-leading products. Inherited a team of 50 scientists and engineers. I re-shaped that group into an integrated team of 200 global employees, including 6 direct reports. $15M OPEX budget responsibility. $5M annual CAPEX budget in addition to a 3-year, $30M CAPEX expansion project. ACCOMPLISHMENTS:==Over $7B in total new booked business for my products since 2015 ($2B each of last 2 years).==Developed and launched 48V battery business segment. Approximately 40% global market share. Currently in production with a leading European automaker, multiple OEMs in China. This technology received the PACE award in 2018 from Automotive News.==Finalized a Joint Development Agreement with a prominent Solid-Electrolyte material supplier, resulting in novel IP. Anticipate accelerating solid-state batteries from 2030+ to 2022-23.==Currently in development with multiple PHEV and EV cells up to 300Wh/kg for global automotive applications. These technologies represent 80% increase in energy density during my tenure at A123. ==Established a modernized modeling and simulation group at A123, focusing on physics based modeling as well as integration with estimation algorithms and measurement sensors. Led development of an integrated sensor-error-model approach that optimizes estimation algorithm against the battery system and sensor error characteristics

POSITION: Lead development of battery management algorithms based on current/voltage sensors, as well as leadership of Electrochemical/Component Modeling, Vehicle/System Modeling, Requirements Analysis, Vehicle Laboratories, and Analytical Laboratories.ACCOMPLISHMENTS:==Built modeling/simulation team from ground up, with focus on multidisciplinary modeling. This includes electrochemical, mechanical, and vehicle simulation==Established and grew an algorithm and sensor analysis group, focusing on optimized state of charge (SOC) and state of health (SOH) estimation.==Received 15 granted patents (8 lead inventor) focused on battery management algorithms and sensor information exploitation.== Integrated disparate global support organizations into a cohesive and coherent Design Analysis organization== Developed formal requirements methodology with decision gates into product development and launch process== Led development and implementation of automation tools for battery design and compliance analysis==Sponsored over $800,000 of university research in 2014, including proposal review, project execution, and technology transfer==Serve as Adjunct Professor at University of Wisconsin-Milwaukee

RESPONSIBILITY: Lead-acid and lithium-ion modeling globally including all modeling, simulation, and controls research, product support, and customer competition programsACCOMPLISHMENTS==Integrated global team of engineers and scientists in the analysis of vehicle energy storage research, linking component analysis, vehicle system analysis, molecular modeling, and techno-economic studies.==Validated cost savings measures for lead-acid aftermarket battery business totaling over $30M==Led thermal, electrochemical, and systems modeling for successful customer competition quoting activity==Sponsored over $500,000 of university research in 2014, including proposal review, project execution, and technology transfer==Serve as Adjunct Professor at University of Wisconsin-MilwaukeeAWARDS:==JCI Merit Award, “Development of 48V Micro-hybrid”. Defined market and technical opportunity for micro-hybrid, led to definition of new product and market segment==Society of Automotive Engineers, “Outstanding Oral Presentation”, SAE World Congress, 2013 and 2014.

POSITION: Director – Modeling and ControlsRESPONSIBILITY: Lead-acid and lithium-ion modeling research, algorithm development, and techno-economic studiesACCOMPLISHMENTS:==Established R&D program for battery management system (BMS) algorithms, including state of health (SOH), state of charge (SOC), and power management.==Served as JCI lead for Department of Energy (DoE) CAEBAT project, advised an awardee under ARPA-E AMPED program

POSITION: Domain Leader – Modeling (6/2011 – 3/2013)RESPONSIBILITY: Lead modeling research with focus on emerging technologies (5-25 yrs)ACCOMPLISHMENTS:==Led competitive and regulatory analysis of electric powertrain, with focus on segment impact of start-stop, hybrid (HEV), and electric vehicles (EV)==Demonstrated viability of 12V and 48V micro-hybrid technology

*RESPONSIBILITIES: ** Collaborate with with analysts and customers to design innovative, data-driven solutions to aid in mission management and force protection**Invent new algorithms to maximize actionable information collected from a wide array of sensor assets including imagery, metadata, physical measurements, and more **Conceive research and development of new machine learning algorithms to solve challenging problems of interest to DoD and intelligence community customers **Serve as principal investigator for government contracts and internal R&D projects*ACCOMPLISHMENTS: **Served as Principal Investigator for programs applying anomaly detection to applications including ELINT analysis, SIGINT metadata, targets detected in radar imagery, and maritime combat identification. **Led development of COMINT mission support software based on anomaly detection algorithms. Software is deployed on-site at classified customer **Combined image analysis tools and coherent change detection (CCD) algorithms for synthetic aperture radar (SAR) to extract and characterize changes for use in anomaly detection algorithms **Created biosurveillance detection methods for identification of disease outbreaks from patient medical records, successfully identification challenge anomalies **Designed language-agnostic text processing algorithm for recognizing topics and events in time-ordered document corpa such as newspapers.

Ph.D. in Chemistry. Research focused on the development of broadly responsive chemical vapor sensors and the development of algorithms to process data from arrays of these sensors.*ACCOMPLISHMENTS: **Designed and fabricated portable, handheld “electronic nose” chemical vapor detection systems based on miniaturized electronics and small flow chambers **Fabricated vapor sensors by casting composite films from suspensions of insulating polymer and conductive carbon black **Wrote software for the processing and signal transduction of “electronic nose” data to analyze thousands of datafiles in seconds **Created statistical methods to evaluate and remove data artifacts arising from sensor response drift, reducing calibration frequency from a few weeks to many months **Applied artificial neural networks to predict physiochemical properties of unknown analytes based upon “electronic nose” responses*PUBLICATIONS: **“Vapor Sensing Using Polymer/Carbon Black Composites in the Percolative Conduction Regime,” BC Sisk, NS Lewis, Langmuir ,22 (2006), 7928–7935. **“Comparison of Analytical Methods and Calibration Methods for Correction of Detector Response Drift in Arrays of Carbon Black-Polymer Composite Vapor Detectors,” BC Sisk, NS Lewis, Sens. Actuators B – Chem., 104 (2005), 249-268. **“Estimation of Chemical and Physical Characteristics of Analyte Vapors Through Analysis of the Response Data of Arrays of Polymer-Carbon Black Composite Vapor Detectors,” BC Sisk, NS Lewis, Sens. Actuators B – Chem., 96 (2003), 268-282. **“Classification Performance of Carbon Black – Polymer Composite Vapor Detector Arrays as a Function of Array Size and Detector Composition,” MC Burl, BC Sisk, TP Vaid, NS Lewis, Sens. Actuators B – Chem. 87 (2002), 130-149.

Developed thermoset polymer compositions for possible use in NASA's relaunchable vehicles (RLV) program

Used thermal and mechanical analysis techniques to evaluate a variety of different materials: organic, inorganic, polymeric etc. Specialized in high-temperature thermosets such as bismaleimides and cyanate esters. Evaluated blends of these materials for possible use in NASA's Relaunchable Vehicles program. Performed failure analysis for a variety of materials including structural components and coatings.