Coreshell Technologies

Based in San Leandro, California, Coreshell Technologies develops liquid-deposited nanolayer coatings for lithium-ion batteries designed to increase capacity, lower manufacturing costs, and extend overall performance. The company's drop-in technology replaces traditional graphite anodes with metallurgical silicon, which can boost battery energy density by 30 to 40 percent for electric vehicles and energy storage systems. Coreshell Technologies has secured approximately $5 million in total capital, including a $4 million seed funding round and a $1 million investment prize from the 2025 Startup World Cup. The enterprise is currently backed by several venture capital firms, such as Entrada Ventures, Foothill Ventures, and Baruch Future Ventures. Additionally, the firm has established testing partnerships with chemical manufacturer BASF and is advised by Tesla co-founder Marc Tarpenning. Coreshell Technologies was founded in 2017 by Jonathan Tan and Roger Basu.

# Coreshell Technologies: High-Level Overview

Coreshell Technologies develops low-cost, high-performance silicon anodes for electric vehicle batteries, addressing one of the industry's most pressing challenges: battery degradation over time.[1][4] Founded in 2017 and based in San Leandro, California, the company uses domestically sourced metallurgical silicon—a material ten times more energy-dense than traditional graphite anodes—to create batteries that deliver over 30% more range while reducing cell costs by up to 25%.[1][4]

The company serves the electric vehicle battery technology sector and partners with global battery manufacturers and automotive OEMs.[1] Coreshell's breakthrough lies in solving silicon-related performance challenges through proprietary nanomaterials and elastic coating technology that prevents degradation, enabling faster charging and longer battery life.[1][4] By harnessing minimally processed metallurgical silicon that costs nearly half as much as graphite, Coreshell is making high-performance EV batteries more affordable and accessible.[1]

Origin Story

Coreshell was founded in 2017 during the early acceleration of EV adoption, when battery performance and cost remained critical bottlenecks for mass-market adoption.[1][2] The company emerged from recognition that metallurgical silicon—an abundant, domestically available material—held untapped potential if its inherent degradation challenges could be solved through advanced materials science.

The company has achieved significant early traction. In October 2025, Coreshell won the global Startup World Cup, competing against over ten thousand startups and securing a $1 million grand prize.[4] Earlier that year, it received the manufacturing award at the 2025 East Bay Innovation Awards and secured a multi-million-dollar grant from the California Energy Commission to advance domestically sourced battery manufacturing.[4] CEO Jonathan Tan leads the company as it scales production and pursues Series B funding.[4]

Core Differentiators

• Proprietary elastic coating technology: Coreshell's nanolayer coating prevents silicon anode degradation, a problem that has historically limited silicon's use in commercial batteries.[1][4]

• Cost advantage: Metallurgical silicon costs nearly 50% less than graphite while delivering ten times the capacity, fundamentally improving battery economics.[1][4]

• Domestic sourcing: The company partners with the leading global producer of high-purity metallurgical silicon and emphasizes domestically sourced materials, aligning with U.S. clean energy and supply chain resilience goals.[1][4]

• Performance gains: Coreshell's batteries deliver over 30% more range and reduce cell costs by up to 25% compared to conventional anodes.[1]

• Manufacturing scale: The company operates a 4 MWh facility in San Leandro and is developing a 100 MWh production site, demonstrating commitment to commercial-scale manufacturing.[1]

Role in the Broader Tech Landscape

Coreshell operates at the intersection of three powerful trends: the global EV transition, the push for domestic battery supply chains, and the race to reduce EV costs through materials innovation. As automakers face pressure to lower battery costs—the largest expense in EV production—solutions that improve energy density while cutting material costs are strategically critical.

The company's focus on metallurgical silicon also addresses geopolitical concerns around battery supply chains. By leveraging domestically available materials rather than relying on imported graphite or rare earth elements, Coreshell supports U.S. energy independence and manufacturing resilience. Its partnerships with major battery manufacturers and OEMs position it as an enabler of the broader EV ecosystem rather than a standalone player.

The timing is particularly favorable: government incentives for domestic battery manufacturing (including California Energy Commission grants) and OEM commitments to cost reduction create strong tailwinds for Coreshell's technology.

Quick Take & Future Outlook

Coreshell is transitioning from technical validation to commercial deployment, with CEO Kim's recent arrival signaling a shift toward scaling operations and securing OEM qualification.[1] The company's Series B fundraising and expansion to a 100 MWh facility suggest ambitions to become a significant supplier to the EV industry within the next 2-3 years.

The critical question ahead is whether Coreshell can achieve the manufacturing scale and reliability required by major automakers while maintaining its cost advantage. Success would position the company as a foundational materials supplier in the EV battery supply chain—a role with substantial long-term value. The company's recent Startup World Cup victory and grant support indicate strong momentum, but execution at scale remains the ultimate test.