# Sili Energy Co.

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/sili-energy-co

- Industry: Energy Storage & Batteries
- Headquarters: Daejeon, South Korea
- Website: www.silienergy.kr/
- Latest round: Seed (Aug 12, 2025)
- Investors on record: 3

## About

Founded in 2023 and based in Daejeon, South Korea, Sili Energy Co., Ltd., aka Siri Energy, operates as a manufacturer of silicon and lithium for secondary batteries. In May 2024, Sili Energy Co., Ltd. raised seed funding from Seoul Technology Holdings. As of 2024, the company is led by its CEO, Jeong Kyeong-jin.

The company's product offerings include silicon cathode solutions, lithium cathode solutions, all-solid-state battery solutions, material evaluation, and technology consulting. The firm’s solutions boast a capacity of 3,579 mAh/g and enable charging times to be halved, from 20 minutes to 10 minutes, by enhancing electronic conductivity and reducing particle expansion during charging cycles. The company also develops proprietary technologies, including lithiothermic and magnethiothermic reduction synthesis (LTRS and MTRS) and self-propagating high-temperature synthesis (SHS). These methods produce pure silicon powders, inks, and electrodes designed for solid-state batteries. In addition, Siri Energy has developed composite materials that inhibit the expansion of silicon, addressing a critical challenge in battery performance and durability.

## Funding rounds

- Seed, Aug 12, 2025 — 500 Global
- Seed, Aug 5, 2024 — Korea Investment Accelerator
- Seed, May 7, 2024 — Seoul Technology Holdings

## Investors

- Seoul Technology Holdings (https://capitalatlas.ai/funds/seoul-technology-holdings) — Seed
- Korea Investment Accelerator (https://capitalatlas.ai/funds/korea-investment-accelerator) — Seed
- 500 Global (https://capitalatlas.ai/funds/500-global) — Seed