Journal
JOURNAL OF ENERGY STORAGE
Volume 51, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.est.2022.104378
Keywords
Cooked chicken bone waste; Biomass; Activated carbon; Carbonization; Specific surface area; Energy storage
Categories
Funding
- South African Research Chairs Initiative of the Department of Science and Technology
- National Research Foundation of South Africa [61056]
- NRF through SARChI chair in Carbon Technology and Materials
Ask authors/readers for more resources
In this study, cooked chicken bone waste (CCBW) was successfully converted into activated carbon for supercapacitor applications. The synthesized activated carbon showed high specific capacitance and specific surface area. The fabricated device exhibited excellent specific energy, power, columbic efficiency, and capacitance retention, indicating the potential of using low-cost biomass as energy storage materials.
Cooked chicken bone waste (CCBW) has been traditionally used as the source of food for some animals like dogs in developing countries, all the same, it has never been reported as an energy storage material. In this study, CCBW has been successfully converted into carbon materials (activated carbon) through a simple and cost-effective activation process for supercapacitor applications. The influence of potassium hydroxide (KOH) as an activating agent/CCBW ratio was established by different characterization techniques and electrochemical investigation. The synthesized activated carbon with the optimal KOH to CCBW presented a high specific capacitance with the specific surface area of 2235.8 m(2)/g. The fabricated symmetric device presented a maximum specific energy and power of 17.1 Wh kg(-1) and 425 W kg(-1) at 0.5 A g(-1). Besides, at high specific current of 10 A g(-1) the device was able to maintain a specific energy and power of 11.3 Wh kg(-1) and 8500 W kg(-1), respectively. The device established a remarkable columbic efficiency of 99.8% and capacitance retention of 90.1% after 20,000 cycling at 5 A g(-1). An outstanding improvement in specific capacitance from 127.6 F g(-1 )to 329.41 F g(-1) after the device was subjected to floating time of 300 h was noted, with corresponding specific energy and power of 33.1 Wh kg(-1) and 4250 W kg(-1) at 5 Ag-1. The results attained offers a possible process of transforming low-cost distinguished biomass source into highly porous nanostructured constituents for energy-storage applications.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available