Research Article
Suppressing Al(OH)_3 Product Accumulation on Air Cathode of Al-Air Battery by Porous Silica Xerogel Composite Layer
@INPROCEEDINGS{10.4108/eai.11-7-2019.2297410, author={H. Aripin and Nurul Hiron and Firmansyah M S Nursuwars and Nundang Busaeri and Svilen Sabchevski}, title={Suppressing Al(OH)_3 Product Accumulation on Air Cathode of Al-Air Battery by Porous Silica Xerogel Composite Layer}, proceedings={Proceedings of the 1st International Conference on Islam, Science and Technology, ICONISTECH 2019, 11-12 July 2019, Bandung, Indonesia.}, publisher={EAI}, proceedings_a={ICONISTECH}, year={2021}, month={1}, keywords={porous silica xerogel insulating layer air cathode al air battery life time}, doi={10.4108/eai.11-7-2019.2297410} }- H. Aripin
Nurul Hiron
Firmansyah M S Nursuwars
Nundang Busaeri
Svilen Sabchevski
Year: 2021
Suppressing Al(OH)_3 Product Accumulation on Air Cathode of Al-Air Battery by Porous Silica Xerogel Composite Layer
ICONISTECH
EAI
DOI: 10.4108/eai.11-7-2019.2297410
Abstract
In this study, the suitability of the porous silica xerogel composite as an insulating layer to suppress the Al(OH)3 product accumulation on the air cathode of aluminum air battery (Al-air battery) has been investigated. The composite layers are composed of silica xerogel, graphite and black carbon. The coating process is done by spraying a composite solution on the cathode surface. In electrochemical experiments, an insulating layer has been successfully used to stabilize the output voltage in the battery with an insulating layer in the air cathode (BUL). It has been found that the cell voltage reaches stable values of about 0.7 V for 8 days for BUL while it drops for battery without an insulating layer (BWL). In BWL, the Al(OH)3 is a primary agent in limiting the voltage stability and life time. For four unit cell of battery, the electric power is over 40 mW, which was enough to operate an LED by serial connection.
