Research

All-solid-state Zinc-air battery: highly flexible rechargeable battery with high energy density

① Safe battery

Zinc-air batteries charge and discharge the electrochemical energy by evolving and storing oxygen in the air. Key components consisting of oxygen catalyst cathode, solid electrolyte, and Zinc anode are flexible, non-flammable, and non-explosive because of the water-based system.

② At least 2 times the higher energy density than conventional Li-ion battery

All-solid-state Zinc-air battery features 2 times higher gravimetric energy density and 2-3 times higher volumetric energy density than those of Li-ion battery.

③ Additional Benefit

Zinc-air batteries can purify the atmosphere by dust-filtering (for discharge) or generating high-purity oxygen (for charge). Typically, purifies the air of 1 Liter per 1 Ah capacity

All-solid-state Zinc-air pouch cells achieved a high energy density of over 500 Wh/kg and a long lifespan of 6000 cycles. By Shinde et al. Nature energy, 6. 592 (2021)

① Fully charged zinc-air battery can drive ~900-mile

All key metrics of zinc-air pouch cells perfectly meet the goals recommended by the US Department of Energy.
Our ZABs provide a 900-mile driving range with a lifespan of one million miles.

② ~1,500 km range per one charge with a total mileage of one million miles

A high energy density of over 500 Wh/kg and a long lifespan of over 6000 cycles
All-solid-state zinc-air pouch cells as a game-changer to replace conventional Li-ion batteries

③ Zinc-air pouch cells reveal a wide range of operation temperature

China dominates the Global Lithium supply chain over 70%, but North America supplies over 40% of world zinc reserves.

④ Zinc-air battery to resolve future energy crisis

Commercially available all-solid-state Zinc-air pouch cell can successfully outperform the conventional Li-ion battery to newly set up the global supply chain of battery resources.

3D-nano Sponge Bifunctional Catalyst

Copper phosphosulfide (CPS) 3D-nano sponge for a world-best OER/ORR bifunctional catalyst

Mechanically robust catalyst with superior electrochemical performance

Electrochemical performance beyond noble metal catalyst

Various catalyst synthetic technology (Noble metal free & Carbon-based metal free catalyst

Super ionic Bio-cellulose conductor

Superionic membrane electrolyte enables superior charging and discharging cycle retention

① Superior ion-conducting and high water retention characteristics

Functionalized Chitosan bacterial cellulose (CBC) membrane for solid electrolyte

② Mechanically superior and high water retention characteristics

Dendrite-free
Nano-patterned
Zinc anode

Optimized surface treatment of a zinc anode is critically important for improving operation stability.

Nano-patterned Zinc anode improves flexibility and cycle stability

The Research Impact of All-solid-state Zinc-air pouch cell

LEE Group has already published more than 20 papers in world-renowned journals, including Nature Energy

(IF: 67.439), top journal in energy research