Office of Technology Transfer – University of Michigan

Method for Construction of Electrodes with Chemically Bonded Li-Compounds on Al and Aluminum Alloy

Technology #5362

Future of Large-Scale Energy Storage: Li-Ion Battery

Li-ion battery systems are one of the main technologies being considered for large-scale energy storage (especially renewable energy storage) across the electricity chain. These batteries can be used in various applications such as load leveling, peak shaving, distributed storage, and power quality. Fire hazard is a perennial problem for Li-Ion batteries. According to recent academic studies, formation of Li-dendrites and short-circuit caused by dendrites when they grow have been identified as major causes for fire hazard. Slurry-coated electrode, a common practice in the industry, produces a considerable amount of loose particles, which can promote frequent encounters of Li-dendrites. An electrode with chemically bonded coating of lithium compound can prevent such unwanted short-circuit by eliminating loose particle formation. Thus, construction of such electrodes is a promising area of research that can impact the Li-Ion Battery market which constitutes 20% of the projected energy capacity of the alternative energy storage mechanisms within U.S.

Construction of Li-Ion Battery Electrodes with Improved Storage Capacity and Safety using Chemically Bonded Coating

Researchers from Mechanical Engineering Department of the University of Michigan have come up with a method for creation of Li-metal phosphates and other consolidated cathode materials coating by laser chemical deposition. By forming an array of micro-needles within the material micro-structure, an increase in the surface area and storage capacity can be observed. The resulting production of electrodes with a chemically bonded coating introduces the capability to eliminate loose particles and avoid Li-Ion battery fire.

Applications

  • Industrial manufacturing for large scale energy storage
  • Load leveling, peak shaving, distributed storage, and power quality.

Advantages

  • Improved storage capacity and safety