Description:

Solid-State Energy Storage Devices Monolithically Printed from Dispersions

A new fabrication method to produce high-performance all-solid-state micro batteries

Background

Batteries that provide elevated energy capacities on smaller scales are in high demand for various applications such as wearables and flexible electronics as well as wireless sensor networks. Micro‑batteries have been investigated to address such a demand however, reducing the size of the battery and maintaining a high level of performance requires sophisticated design architecture. Different methods have been explored to achieve high-performance micro batteries, yet the low stability of these batteries significantly hinders their translation to real-world applications. To address the stability problem, complicated architectures have been designed, which increase cost and limit fabrication at a large scale. Therefore, new methods of fabrication are needed to overcome the current limitations of micro-battery design.

Technology Overview

Researchers at Northeastern University have developed a novel approach to fabricating an all-solid-state Li metal micro‑battery. This micro‑battery is designed with the directed assembly-based printing of nanoparticles. This unique printing method facilitates the assembly and fabrication of all battery components including cathode, anode, and electrolyte at micro-scale dimensions. It obviates the need for implementing costly and complex fabrication techniques such as sacrificial templates. The porous cathode framework obtained using this approach provides enough space for the polymer electrolyte to be infiltrated within the cathode electrode, resulting in a cathode-supported electrolyte membrane. This innovation combines superior ionic transport and low interfacial resistance between the electrolyte and the cathode and provides an excellent electronic pathway through the cathode framework. The designed method of fabrication gives the micro‑battery an outstanding performance with long-term cycling stability. Finally, this approach paves the way for the mass production of high-performance all-solid-state micro‑batteries based on Li metal anodes and extends their application in miniaturized energy devices. 

Benefits

  • Significant reduction in electrode interfacial resistance compared to conventional batteries 
  • Outstanding performance and high capacity
  • Long-term cycling stability 

Applications

  • Tiny and flexible electronic circuits
  • Radio Frequency Identification (RFID) tag

Opportunity

  • Research Collaboration 
  • Developmental partner
  • Licensing 

https://app.in-part.com/opportunities/cc47d040-92c3-446c-93fe-096fb0ff3091?idHash=QaR0lEAj7ero

Patent Information:
For Information, Contact:
Mark Saulich
Associate Director of Commercialization
Northeastern University
m.saulich@northeastern.edu
Inventors:
Ahmed Busnaina
Ahmed Mostafa Abdelaziz
Keywords:
Battery
Fluidic assembly
Li metal anode
Mocrobatteries
Solid-state electrolyte