Cuong Nguyen

- Build and lead a discipline team with experience in cell design (mechanical and electrochemistry), cell validation and characterization, cell modeling, cell safety and abuse, cell testing and cell failure analysis. Responsible for cell design/ cell development, cell manufacturing/industrialization with cell suppliers, integration of battery cells into Rivian battery packs and cell control limits into BMS/Software. - Develop and set battery cell roadmap and strategy for each Rivian product (R1, EDV, R2/R3…). - Developed and launched different cell chemistries in 2170 format into R1T/S Gen 1 and Gen 2. - Developed key engineering solutions and strategy to get R1 to > 400 mile range. - Developed large prismatic LFP battery cells and pack into EDV and R1 standard to reduce cost and increased durability, open path for Rivian’s positive gross margin. - Play key role in supplier nominations - Bring science and engineering solutions to improve customers experience. Collaborated with cross functional teams, rolled out multiple improvements in fast charge, Regen and other control logics/limits and have received great feedback from customers. - Developed diagnostics methods to monitor battery health from fleet vehicles to improve customer’s experience and reduce thermal event risks. - Build state of the art cell characterization labs with ~ 5000 cycling channels, capable of performing test for different form factors; dry room; analytical labs, cell safety labs that can perform single and clusters (mini module) of cells - Oversee multimillion-dollar annual CAPEX and OPEX budgets

- Designed and performed characterization methods of lithium ion cells for EV including performance and cycle/calendar life. - Made recommendations for cell selection for R1 and EDV - Developed fast charge protocols. - Developed statistical model for lifetime prediction. - Identified cell’s degradation mechanisms and worked with cell supplier to improve cell design to address cell performance gap and cell defects - Managed a team of engineers and technicians to expand the cell’ characterization lab.

• Develop novel electrolytes for enhancing cycle life, safety and rate performance of Si and Si-graphite composite anodes. • Systematically study mechanism of SEI formation on Si electrodes. • Study effects of binders on cycling performance and SEI formation on Si anodes. • Develop new binders for Si-based electrodes (one patent-pending)

• Investigated electrochemical and interfacial reactions of Si- and Sn-based anodes in various electrolytes and their relationship to cycling performance. • Developed electrolytes for flexible cable battery in a collaboration with LG Chem. • Synthesized siloxane caped-Si nanoparticles via chemical reduction of SiCl4 in the presence of a siloxane surfactant. • Synthesized Si nanoparticles by reducing SiO2 with lithium metal at RT. • Optimized electrode composition and structure of Si-graphite and Si-graphene-carbon nanofiber composites for improved cycling performance. • Fabricated silicon-based and tin-based thin film anodes.

• Investigated impacts of additives (alkoxysilanes, vinylene carbonate (VC), fluoroethylene carbonate (FEC), phosphites…) in alkyl carbonate electrolytes to the cycle life and the formation of a solid-electrolyte interphase (SEI) at Si-based and Sn-based thin film electrodes. • Investigated cycling performance and SEI formation mechanism at Si-based anodes in ionic liquids. • Investigated effects of metal and F-doping to cycling performance and SEI structure of LiMnO2 spinel. • Investigated the SEI formation at NCM111 cathode in the presence of additives. • Studied effects of electrode compositions and electrolytes to lithium diffusion in Si-based thin film anodes. • Fabricated silicon-based (Si, Si-Cu composite and SiOx with x=0.4-1.3) and tin-based thin film anodes using pulsed laser deposition (PLD). • Fabricated and investigated cycling properties of C-coated Si anodes with and without alkoxysilane additives. • Studied effects of roughened current collector to cycling performance of the Si anodes. • Synthesized TiO2 anode materials using hydrothermal method. • Synthesized Si nanoparticles via chemical reduction of SiCl4 and SiO2 with and without surfactants. • Synthesized graphene using Hummer method. • Synthesized a novel electrode structure comprising of Si, graphene and carbon nanofiber for enhancing cyclability.

• Synthesized and characterized structure of metallacyclic complexes of Methyleugenol and Platinum (II) and some metallacyclic complexes of Methyleugenol and Platinum (II) containing amines • Synthesized and characterized structure of nanomaterials (Ni0.5Zn0.5O2 and BaFe12O19) by citrate sol-gel method