A secondary, coplanar design Ni/MCM-41/Zn microbattery
A secondary Ni/Zn microbattery (200 µm thick) has been developed in a coplanar electrode configuration. The cell is essentially of a circular shape (30 mm in diameter) consisting of a fine circular ring (cathode) and a circle (anode) split apart (~800 µm). Unlike the stacking cell architecture,...
| Main Authors: | , , |
|---|---|
| Format: | Conference or Workshop Item |
| Language: | English English English |
| Published: |
Institute of Physics Publishing
2018
|
| Subjects: | |
| Online Access: | http://irep.iium.edu.my/65011/ http://irep.iium.edu.my/65011/ http://irep.iium.edu.my/65011/ http://irep.iium.edu.my/65011/1/65011_A%20secondary%2C%20coplanar%20design_conference%20article.pdf http://irep.iium.edu.my/65011/2/65011_A%20secondary%2C%20coplanar%20design_scopus.pdf http://irep.iium.edu.my/65011/13/65011_A%20secondary%2C%20coplanar%20design%20Ni_wos.pdf |
| Summary: | A secondary Ni/Zn microbattery (200 µm thick) has been developed in a coplanar
electrode configuration. The cell is essentially of a circular shape (30 mm in diameter)
consisting of a fine circular ring (cathode) and a circle (anode) split apart (~800 µm). Unlike
the stacking cell architecture, coplanar configuration offers simple design, ease of fabrication
and eventually cost saving. The use of MCM-41 mesoporous silica as the membrane separator
cum electrolyte reservoir enables the successful implementation of coplanar configuration. The
fabrication of Ni/Zn microbattery first begins with electrodeposition of zinc (Zn) and nickel
hydroxide (Ni(OH)2)
thin films onto patterned FR4 printed circuit board, followed by
deposition of zinc oxide (ZnO) slurry onto the zinc active layer, and finally ends by multiple
drop-coating procedures of MCM-41 from its precursor solution at ambient temperature. Once
a potassium hydroxide (6 M KOH)/MCM-41 electrolyte-separator mixture is incorporated, the
cell is sealed with an acrylic sheet and epoxy adhesive. The fabricated microbatteries were
capable to sustain around 130 deep charge-discharge cycles. When rated at 0.1 mA, the energy
density of the microbattery was around 3.82 Wh l-1 which is suitable for low rate applications
and storage for micro energy harvesters such as piezoelectric generators. |
|---|