Profile Details

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Hire Pratik Ranjan D.

India

USD 100 /hr

Lithium-ion Battery Professional (13+ year) | PhD in Electrochemistry | Expert in Battery Pack Design & Circular Economy

Profile Summary

Dr. Pratik Ranjan Das is a lithium-ion battery scientist and clean energy professional with over 13+ years of experience in applied research, product development, and leadership. He holds a PhD in Electrochemistry from the University of Oldenburg, Germany, and has hands-on expertise in cell fabrication, pack making, and second-life applications of lithium-ion batteries. As CTO and Co-founder of Enerjazz Inc., he led R&D and production of over 500 battery packs for electric 2W/3W vehicles in Delhi NCR and managed multiple swapping stations, focusing on affordability and sustainability. He has prior research experience in DLR (Germany) and Custom Cells GmbH, specializing in cathode/anode coating, DCIR, impedance testing, and ageing analysis. His work combines technical depth with leadership — spanning prototype design, production, data analysis, and circular economy innovation. He is passionate about building safer, affordable, and second-life lithium-ion systems for e-mobility and stationary storage.

Subject Matter Expertise

• ★ Electrochemistry
• ★ Batteries & Fuel Cells
• ★ Entrepreneurship
• ☆ Electrical Engineering
• ☆ Automotive Engineering
• ☆ Process Engineering
• ☆ Engineering Design
• ☆ Business Strategy
• ☆ Customer Service
• ☆ Marketing Strategy
• ☆ Marketing Analytics

Services

• Writing
• Research
• Consulting
• Data & AI
• Product Development

Writing Technical Writing, Business & Legal Writing, Creative Writing

Research Market Research, User Research, Feasibility Study, Technology Scouting, Fact Checking, Gap Analysis, Scientific and Technical Research, Systematic Literature Review, Secondary Data Collection

Consulting Business Strategy Consulting, Go-to-Market Strategy Consulting, Operations Consulting, Scientific and Technical Consulting, Manufacturing Consulting

Data & AI Data Insights

Product Development Product Evaluation, Material Sourcing, Product Validation, Manufacturing, Concept Development, Product Launch Support, Prototyping, Reverse Engineering, Device Fabrication

Work Experience

Co-founder, CTO

Enerjazz Inc.

March 2017 - October 2025

Junior Project Manager

Custom Cells Itzehoe GmbH, Germany

July 2016 - January 2017

Scientist & PhD Researcher

DLR-Institut für Vernetzte Energiesysteme e.V., Germany

September 2012 - June 2016

Education

PhD, Electrochemistry

University of Oldenburg, Germany

September 2012 - June 2016

M.Sc., Advanced Materials & Processes

Friedrich-Alexander University Erlangen, Germany

September 2009 - May 2012

B.Tech., Metallurgical & Materials Engineering

VNIT Nagpur, India

May 2005 - May 2009

Certifications

• Y Combinator Startup Program (S-21)

  Y Combinator

  https://www.ycombinator.com/

  May 2021 - Present

• GIZ Returning Expert Fellowship

  Deutsche Gesellschaft für Internationale Zusammenarbeit GmbH

  https://www.giz.de/en

  August 2018 - August 2021

Publications

JOURNAL ARTICLE

Anna Dettlaff, Pratik R. Das, Lidiya Komsiyska, Oliver Osters, Justyna Łuczak, Monika Wilamowska-Zawłocka (2018). Electrode materials for electrochemical capacitors based on poly(3,4 ethylenedioxythiophene) and functionalized multi-walled carbon nanotubes characterized in aqueous and aprotic electrolytes . Synthetic Metals.

Georgiana Sandu, Bruno Ernould, Julien Rolland, Nathalie Cheminet, Jérémy Brassinne, Pratik R. Das, Yaroslav Filinchuk, Luhua Cheng, Lidiya Komsiyska, Philippe Dubois, et al. (2017). Mechanochemical Synthesis of PEDOT:PSS Hydrogels for Aqueous Formulation of Li-Ion Battery Electrodes . ACS Applied Materials & Interfaces.

Pratik R. Das, Lidiya Komsiyska, Oliver Osters, Gunther Wittstock (2016). Effect of solid loading on the processing and behavior of PEDOT:PSS binder based composite cathodes for lithium ion batteries . Synthetic Metals.

Pratik R. Das, Lidiya Komsiyska, Oliver Osters, Gunther Wittstock (2015). PEDOT: PSS as a Functional Binder for Cathodes in Lithium Ion Batteries . Journal of The Electrochemical Society.

Pratik Ranjan Das, Sarama Bhattacharjee, Christiane Ohl, Viola Wilker, Mathias Kappa, Franziska Scheffler, Michael Scheffler (2011). Novel‐Type Inorganic Foams from Preceramic Polymers with Embedded Titania Nanoparticles for Photo‐Catalytic Applications . Advanced Engineering Materials.