We design and fabricate freestanding 3D electrodes for green hydrogen production and aqueous zinc–air batteries, with a focus on performance and durability at ampere-scale current densities.
We work on three areas that share a common foundation in electrode architecture and interfacial engineering.
AEM water electrolysis음이온교환막 수전해
Nickel- and iron-based fibrous electrodes that replace precious metals and porous transport layers at the same time. We compress resilient sponges and wools directly into the membrane to form void-free, interlocked MEAs, and we test them where it matters: ampere-scale current, 80 °C, thousands of hours, on–off cycling. Our steel-wool anode brings the electrode cost below 5 USD per m².
Adv. Energy Mater. back cover · 44/2025Interlocked MEA via compressible Ni spongeSubstrate-dependent durability of Ni electrodes
Aqueous batteries, including zinc–air수계 배터리
Safe, water-based chemistries built for real form factors. We fabricate bifunctional air cathodes from carbon fabrics, aerogels and metal foams, pair them with dendrite-free zinc anodes, and assemble them into flexible, quasi-solid-state pouch cells that reach ampere-hour capacity, survive bending, and are cut to fit the device.
Carbon roll → bilayer air electrodes2.5 Ah bipolar pouch zinc–air cellWearable zinc–air demonstrations
Fabrication of 3D hierarchical electrodes3차원 계층 전극 제조
The manufacturing science underneath both applications. One-pot wet synthesis of nanofibrous metal sponges, oxidative corrosion of commodity metals, carbonization of biomass and textiles, dry-process electrode forming, and direct compression assembly — all aimed at electrodes that are freestanding, scalable to meters, and structured from nanometer to millimeter.
Where our people go next — graduate school, industry, and research institutes.
Coming soon
Graduates of the group at Chosun University will be listed here, with their thesis topics and current positions.
Gallery갤러리
News, milestones, and everyday life in the lab.
우리 연구실이 개발한 '철솜' 수전해 전극이 언론에 소개되었습니다기사 보기 →우리 연구실이 개발한 '니켈 스펀지 전극'이 언론에 소개되었습니다기사 보기 →우리 연구실의 연구가 Advanced Energy Materials 뒤표지 논문으로 실렸습니다논문 보기 →
News소식
Papers, people and milestones.
EEL opens at Pukyong National University. The lab moves into Rooms 318 and 301, Building 15, Yongdang Campus, Busan.
Sohyun Lee and Jinhong Kim publish in Nanoscale on the interfacial stability of nanostructured Ni electrodes under on–off operation at ampere scale.
Back cover of Advanced Energy Materials. Our compression-guided interlocked MEA work is featured on the cover of issue 44.
Steel-wool electrodes in Advanced Functional Materials. A 2 m-scale AEMWE electrode at 4.59 USD per m², over 200× cheaper than nickel-based benchmarks.
Join the lab함께할 사람을 찾습니다
A new lab is the best time to join one. You will set up equipment, define the first projects, and publish early. We look for people who like to build things with their hands and then measure them carefully.
M.S., Ph.D. and integrated M.S.–Ph.D. students for the 2027 intake. Backgrounds in chemical engineering, materials, chemistry or nano-engineering are all welcome.
Undergraduate researchers from Pukyong, any semester. Start with electrode fabrication and electrochemical testing; stay for a paper.
Postdoctoral researchers with experience in AEMWE, aqueous batteries or scalable electrode manufacturing. Enquire with a CV.
Industry partners interested in low-cost electrode manufacturing for hydrogen and battery applications.
