Baylet, Mark LorenceS. <br/><br/>
Bio-based carbon additivesforenhanced lead-acid battery performance/ 
Mark Lorence S. Baylet, Vincent S. Dusaran, Jayson P. Futol, Jerome O. Montaņez, and Jerwen K. Pit.-- 
 - Manila:	  Technological University of the Philippines,	  2025. 
 - x, 68pages:  29cm. 
<br/><br/> Bachelor's thesis<br/> 
<br/><br/>College Of Engineering.--<br/> 
<br/><br/>Includes bibliographic references and index. 
<br/><br/> This study explores the use of bio-based carbon additives derived from agricultural<br/>waste, specifically corn cobs, coconut husks, and rice husks, to improve the<br/>electrochemical performance of lead-acid batteries. With the growing demand for energy<br/>storage systems and the environmental concerns associated with conventional battery<br/>materials, there is an urgent need for sustainable alternatives. In this research, the selected<br/>biomass materials underwent carbonization and chemical activation using potassium<br/>hydroxide to produce activated carbon. This activated carbon was then incorporated into<br/>the negative electrode paste of lead-acid battery prototypes. A series of 2V and 12V<br/>batteries were fabricated to evaluate the effects of different types and concentrations of<br/>activated carbon on key performance indicators such as open-circuit voltage, internal<br/>resistance, and capacity. The 2V prototypes showed that coconut husk-based activated<br/>carbon at a concentration of 0.8 grams delivered the highest capacity of 22.63 mAh,<br/>significantly exceeding the control battery which recorded 11.67 mAh. Rice husk<br/>performed best at 0.8 grams with a capacity of 15.82 mAh, while corn cob showed<br/>optimal performance at 1.2 grams with a capacity of 10.96 mAh. These optimal<br/>concentrations were then applied to 12V battery prototypes, where coconut husk again<br/>produced the best result with a capacity of 173.08 mAh, followed closely by rice husk at<br/>171.15 mAh. The findings demonstrate that activated carbon derived from agricultural<br/>waste, especially coconut husk, can significantly enhance the performance of lead-acid<br/>batteries. This approach not only improves battery efficiency but also provides an<br/>environmentally friendly solution for the reuse of organic waste, contributing to more<br/>sustainable energy storage technology. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Activated carbon<br/>Agricultural waste<br/>Coconut husk
<br/><br/><label>LC Class. No.: </label>BTH TK 146   / B39 2025