Jin Lim

Jin-Myoung Lim is the co-founder, CEO, and CTO of ACT-ion Battery Technologies, a Dallas-based deep-tech startup reinventing how cathode active materials (CAM) are made for lithium-ion batteries. A PhD mechanical engineer from Seoul National University with 2,272+ research citations and an h-index of 27, Lim spun ACT-ion out of Hunt Energy Enterprises in 2019 with a bold thesis: that the biggest bottleneck in the battery supply chain isn't the chemistry - it's the manufacturing process. His Hydro4Crystal platform produces coated single-crystal CAMs continuously, with lower energy, cost, and emissions than any incumbent method, and it works across chemistries from LFP to NMC. In 2024, the technology won an R&D 100 Award. By late 2025, ACT-ion had raised $11.5 million from BASF Venture Capital, LG Technology Ventures, Mirae Asset Capital, and Korean institutional investors, and was breaking ground on a pilot plant in Carrollton, Texas.