Developments in MEMS scale printable alkaline and Li-ion technology

K. A. Littau; C. L. Cobb; N. Spengler; S. Solberg; M. Weisberg; N. Chang; A. Rodkin

doi:10.1117/12.883311

13 May 2011 Developments in MEMS scale printable alkaline and Li-ion technology

K. A. Littau, C. L. Cobb, N. Spengler, S. Solberg, M. Weisberg, N. Chang, A. Rodkin

Proceedings Volume 8031, Micro- and Nanotechnology Sensors, Systems, and Applications III; 80311L (2011) https://doi.org/10.1117/12.883311
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

Two technologies for MEMS (Microelectromechanical Systems) scale cell formation are discussed. First, the fabrication of planar alkaline cell batteries compatible with MEMS scale power storage applications is shown. Both mm scale and sub-mm scale individual cells and batteries have been constructed. The chosen coplanar electrode geometry allows for easy fabrication of series connected cells enabling higher voltage while simplifying the cell sealing and electrode formation. The Zn/Ag alkaline system is used due to the large operating voltage, inherent charge capacity, long shelf life, and ease of fabrication. Several cells have been constructed using both plated and spun-on silver. The plated cells are shown to be limited in performance due to inadequate surface area and porosity; however, the cells made from spun-on colloidal silver show reasonable charge capacity and power performance with current densities of up to 200 uA/mm² and charge capacities of up to 18 mA-s/mm². Second, a new printing method for interdigitated 3-D cells is introduced. A microfluidic printhead capable of dispensing multiple materials at high resolution and aspect ratio is described and used to form fine interdigitated cell features which show >10 times improvement in energy density. Representative structures enabled by this method are modeled, and the energy and power density improvements are reported.

Citation Download Citation

K. A. Littau, C. L. Cobb, N. Spengler, S. Solberg, M. Weisberg, N. Chang, and A. Rodkin "Developments in MEMS scale printable alkaline and Li-ion technology", Proc. SPIE 8031, Micro- and Nanotechnology Sensors, Systems, and Applications III, 80311L (13 May 2011); https://doi.org/10.1117/12.883311

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available