Flexible and Printable Paper-Based Al Ion Batteries

HKU
Overview

The present invention is a low-cost, flexible and rechargeable battery technology built on a single piece of paper. It is mainly composed of an Al foil anode, an electrolyte-absorbed paper and an Al ion storage cathode.

  • Flexible and Printable Paper-Based Al Ion Batteries
Commercialisation opportunities
Exclusive Licensing
Problem addressed

Conventional Li ion battery is relatively high cost for some low-cost portable electronic applications. It has safety concerns because of its organic electrolyte and its strict requirements on its disposal and recycle, which may cause pollution if not handled properly.

Innovation
  • The present paper-based Al ion battery is extremely low-cost because of its cheap raw material and simple fabrication process.
  • It is highly safe because of the utilization of incombustible aqueous electrolyte.
  • It is environmental-friendly because of its green raw materials, that is, Al foil, cellulose paper and carbon.
Key impact
  • Paper is selected as the battery backbone
  • Super-concentrated aqueous electrolyte is employed instead of organic electrolyte
  • The electrodes can be directly printed onto the paper
Application
  • Battery
  • Robotics
The University of Hong Kong (HKU)

Founded in 1911, The University of Hong Kong (HKU) is the first and oldest institution of higher education in Hong Kong. For over a century, the University has dedicated itself to creating knowledge, providing education, and serving society. Today, HKU has an established worldwide reputation for being a research-led comprehensive University with ten Faculties and a strong commitment to intellectual freedom, liberty and diversity. HKU has a proud record of academic recognition in researches through honours and awards received from both local and international bodies.

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