文部科学省大学間連携共同教育推進事業「未来像を自ら描く電気エネルギー分野における実践的人材の育成」
Supercapacitors as an alternative for electric energy storage: Potential and challenges [7月18日（木）福岡工業大学]
2024/07/19
【科目種別】電気エネルギーシステム工学特論Ⅱ（英語科目）
■講師：Dr. Yuli Yetri 先生
（ご所属）Politeknik Negeri Padang, Indonesia
■演題：Supercapacitors as an alternative for electric energy storage: Potential and challenges
■日時：令和6年7月18日（木）16：30 〜 18：00
■場所：Zoomオンライン
■主催：福岡工業大学大学院
■共催：大学間連携共同教育プログラム
■申込/お問合せ：福岡工業大学大学院事務室
電話：092-606-6996 E-mail：master@fit.ac.jp
■概要：One alternative energy source that is being developed as a substitute for fuel oil derived from organic materials is supercapacitors. Organic materials are easy to obtain, guaranteed continuity, environmentally friendly and non-toxic. This guarantee and environmental friendliness are the main factors in making organic materials a future energy source in realizing green technology and renewable energy sources.
Supercapacitors are electrochemical devices that have the ability to store and release charge by providing high power density in a short time, have a charge storage capacity thousands of times higher, the energy is higher than general capacitors, and the time needed to recharge is only 30 seconds with a capacity of hundreds of farads. The problems with energy storage in general are that the usage cycle tends to be low, and the basic electrode materials are still imported. One thing that limits the application of supercapacitors as the main energy source for electric cars is the low energy density which results in the vehicle's range (distance capability) being also low, but it has disadvantages, including a small energy capacity and relatively more expensive costs compared to batteries.
Supercapacitors consist of carbon with a highly active surface area and a thin layer of electrolyte as a dielectric and charge separator. The performance and electrical quality of a supercapacitor is determined by the basic electrode material. The electrode materials currently being developed are carbon and its composites, as well as organic materials that have a high carbon content. This means that biomass waste with a high cellulose content is a very promising electrode reserve, and is one of the important factors in determining the quality of the electrical properties of supercapacitors.
One of the biomass wastes that has the potential to be used as a base material for electrodes is cocoa shells (Theobroma cacao), because 75% of cocoa fruit production is fruit shells that have not been maximally utilized, and 25% are seeds and placenta. Cocoa shells contain 21.06% hemicellulose, 20.15% cellulose and 51.98% lignin. The high cellulose content in cocoa pods means that cocoa pods are one of the biomass wastes that can be used as raw material for supercapacitor electrodes. The performance of activated carbon as a supercapacitor electrode is influenced by several factors including carbonization temperature, activation method, activator concentration, activation temperature, and type of material used.
■学生の関わり様
スーパーキャパシタに関して、原理や特徴を説明していただいた後、使われている炭素材料の種類、Dr. Yuli Yetri先生がこれまで取り組んできた研究内容について一部紹介いただいた。本年度初めての英語での講義ということもあり、慣れていない学生が多く、学生からの質問は無かったが、スーパーキャパシタについての知識は増えたのでないかと思われる。
■講師：Dr. Yuli Yetri 先生
（ご所属）Politeknik Negeri Padang, Indonesia
■演題：Supercapacitors as an alternative for electric energy storage: Potential and challenges
■日時：令和6年7月18日（木）16：30 〜 18：00
■場所：Zoomオンライン
■主催：福岡工業大学大学院
■共催：大学間連携共同教育プログラム
■申込/お問合せ：福岡工業大学大学院事務室
電話：092-606-6996 E-mail：master@fit.ac.jp
■概要：One alternative energy source that is being developed as a substitute for fuel oil derived from organic materials is supercapacitors. Organic materials are easy to obtain, guaranteed continuity, environmentally friendly and non-toxic. This guarantee and environmental friendliness are the main factors in making organic materials a future energy source in realizing green technology and renewable energy sources.
Supercapacitors are electrochemical devices that have the ability to store and release charge by providing high power density in a short time, have a charge storage capacity thousands of times higher, the energy is higher than general capacitors, and the time needed to recharge is only 30 seconds with a capacity of hundreds of farads. The problems with energy storage in general are that the usage cycle tends to be low, and the basic electrode materials are still imported. One thing that limits the application of supercapacitors as the main energy source for electric cars is the low energy density which results in the vehicle's range (distance capability) being also low, but it has disadvantages, including a small energy capacity and relatively more expensive costs compared to batteries.
Supercapacitors consist of carbon with a highly active surface area and a thin layer of electrolyte as a dielectric and charge separator. The performance and electrical quality of a supercapacitor is determined by the basic electrode material. The electrode materials currently being developed are carbon and its composites, as well as organic materials that have a high carbon content. This means that biomass waste with a high cellulose content is a very promising electrode reserve, and is one of the important factors in determining the quality of the electrical properties of supercapacitors.
One of the biomass wastes that has the potential to be used as a base material for electrodes is cocoa shells (Theobroma cacao), because 75% of cocoa fruit production is fruit shells that have not been maximally utilized, and 25% are seeds and placenta. Cocoa shells contain 21.06% hemicellulose, 20.15% cellulose and 51.98% lignin. The high cellulose content in cocoa pods means that cocoa pods are one of the biomass wastes that can be used as raw material for supercapacitor electrodes. The performance of activated carbon as a supercapacitor electrode is influenced by several factors including carbonization temperature, activation method, activator concentration, activation temperature, and type of material used.
■学生の関わり様
スーパーキャパシタに関して、原理や特徴を説明していただいた後、使われている炭素材料の種類、Dr. Yuli Yetri先生がこれまで取り組んできた研究内容について一部紹介いただいた。本年度初めての英語での講義ということもあり、慣れていない学生が多く、学生からの質問は無かったが、スーパーキャパシタについての知識は増えたのでないかと思われる。
