Battery R&amp;D InternshipEnovix is seeking an R&amp;D Intern to support the design, fabrication, testing, and analysis of lithium-ion batteries with silicon-based anodes. This role is well suited for a PhD student or graduate researcher with strong experience in electrochemistry, battery materials, cell testing, and failure analysis.The ideal candidate will bring deep technical expertise in battery materials and electrochemistry, a hands-on approach to experimentation, and enthusiasm for addressing complex challenges in silicon anode commercialization.The intern should be comfortable working across fundamental science, experimental execution, and product-focused battery development. The intern will collaborate closely with scientists, engineers, and technical leadership to support the development of high-performance lithium-ion cells.Key ResponsibilitiesThe intern will contribute to one or more of the following areas:<ul><li>Design and evaluate silicon-based anode materials, composites, binders, conductive additives, and electrode formulations.</li><li>Fabricate electrodes and coin, pouch, or other test cells for electrochemical evaluation.</li><li>Perform battery testing, including formation, cycling, rate capability, fast-charge testing, impedance measurements, and diagnostics.</li><li>Analyze capacity retention, coulombic efficiency, impedance growth, swelling, and other key performance metrics.</li><li>Investigate silicon anode degradation mechanisms, including volume expansion, SEI evolution, particle fracture, lithium inventory loss, and electrode-level failure modes.</li><li>Use materials characterization techniques such as SEM, TEM, XRD, XPS, Raman, FTIR, BET, TGA, or related methods, as applicable.</li><li>Develop clear, data-driven recommendations to guide silicon anode material and cell design.</li><li>Document experimental procedures, results, and conclusions in technical reports and presentations.</li><li>Work cross-functionally with materials, cell engineering, process development, and product teams.</li></ul>Required Qualifications<ul><li>Currently enrolled in a PhD program at a leading university, national laboratory, or research institute with a strong focus on batteries, electrochemistry, materials science, chemical engineering, mechanical engineering, or a related field.</li><li>Research experience in lithium-ion batteries, preferably silicon-carbon or other advanced anode systems.</li><li>Strong understanding of lithium-ion battery fundamentals, including electrode design, interfacial chemistry, SEI formation, transport limitations, and cell degradation.</li><li>Hands-on experience with battery cell assembly and electrochemical testing.</li><li>Ability to analyze complex experimental data and translate results into actionable technical insights.</li></ul>Preferred Qualifications<ul><li>Direct experience with silicon anode materials, silicon-carbon composites, pre</li><li>lithiation, binder systems, electrolyte additives, or high-loading electrode design.</li><li>Familiarity with advanced diagnostic methods such as EIS, GITT, dQ/dV analysis, post-mortem analysis, gas analysis, or mechanical swelling measurements.</li><li>Experience using Python, MATLAB, JMP, Origin, or similar tools for data analysis.</li><li>Publications, patents, or conference presentations related to lithium-ion batteries or advanced anode materials.</li><li>Experience working in industry, a national laboratory, or a collaborative applied research environment.</li></ul>What You Will Gain<ul><li>Hands-on experience developing next-generation silicon anode lithium-ion battery technology.</li><li>Exposure to startup-style R&amp;D, rapid experimentation, and practical cell development.</li><li>Opportunity to work closely with experienced battery scientists and engineers.</li><li>Experience translating academic research into commercially relevant battery technology.</li></ul>This is a paid internship that will be onsite at our Fremont, CA office, with an expected duration of 3-6 months. The hourly pay range is $40–$45, depending on experience, qualifications, and other job-related factors.

We're building a next-gen lithium-ion battery with our patented 3D cell architecture and high-capacity silicon anode to increase energy density and improve safety.Our patented 3D cell architecture, high-capacity silicon anode, and high-speed production process increase energy density and improve safety at an affordable price. Enovix is building a diverse team of engineers and scientists to produce the next generation of safe, high-energy batteries.

R&D Intern

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Enovix

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