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」
The Metal Oxide Based Ce -Doped Cu-Ni Oxide Materials for Sustainable and Green Energy Electrochemical Charge Storage Applications [12月13日（金）福岡工業大学]
2024/12/13
【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.Amar L.Jadhav 先生
（ご所属）The Institute of Science, Dr. Homi Bhabha State University, India
■演題：The Metal Oxide Based Ce -Doped Cu-Ni Oxide Materials for Sustainable and Green Energy Electrochemical Charge Storage Applications
■日時：令和6年12月13日（金）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：Supercapacitors represent a vital category of electrochemical energy storage devices, with the electrode assuming a pivotal role. This thesis endeavors to elucidate the synthesis methodology of electrode materials, their characterization, and an in-depth analysis of their supercapacitive attributes. Additionally, it encompasses the fabrication and design aspects of supercapacitor devices. The electrode materials under scrutiny encompass NiO, CuO, Cu-Ni Oxide, and Ce-doped Cu-Ni oxide materials. The optimization process involves tailoring electrode materials for optimal charge storage applications, subsequently utilizing the most optimized electrodes for synthesizing Cu-Ni oxide and Ce-doped Cu-Ni oxide nanomaterials, and the subsequent fabrication of supercapacitor devices.
In the optimization of NiO, two parameters, namely the precursor concentration and thiourea solution, are meticulously optimized. Initially, binder-free NiO nanomaterials are synthesized via the hydrothermal method on stainless steel (SS) substrates. A similar procedure is employed for the synthesis of CuO materials on SS substrates. Notably, both NiO and CuO exhibit distinct morphological structures, with NiO showcasing 1D-3D aggregated flower-like structures and CuO displaying crumb-like hollow flower structures, each achieving maximum specific capacitances of 855.6 and 1525 F/g, respectively, at a scan rate of 5 mV/s. Furthermore, binder-free 3D marigold flower-like Cu-Ni oxide is deposited using the hydrothermal method on SS substrates, showcasing a maximum specific capacitance of 2780 F/g at a scan rate of 2 mV/s. Similarly, the optimized marigold flower-like 5 mM Ce-doped Cu-Ni oxide, synthesized via hydrothermal means, achieves a maximum specific capacitance of 3281.2 F/g at a scan rate of 2 mV/s. Moreover, the optimized Ce-doped Cu-Ni oxide nanomaterials exhibit remarkable performance in a mixed electrolyte, with a maximum specific capacitance of 3952.8 F/g at 2 mV/s, retaining 98% of its capacitance after 15000 cycles.
Finally, the optimized NiO, CuO, composite Cu-Ni oxide, and Ce-doped Cu-Ni oxide is utilized for the fabrication of solid symmetric and asymmetric electrochemical hybrid supercapacitor devices. Successful fabrication of asymmetric supercapacitor devices is achieved, incorporating various electrode combinations and solid-state PVA-KOH gel polymer electrolyte, with a polymer membrane serving as a separator. This study underscores an efficient methodology for supercapacitor electrode fabrication, highlighting Ce-doped Cu-Ni oxide nanomaterials as promising candidates for charge storage supercapacitor applications.
Overview, this work explores the crucial role of supercapacitors in electrochemical energy storage, focusing on electrode synthesis, characterization, and device fabrication. By optimizing materials like NiO, CuO, Cu-Ni Oxide, and Ce-doped Cu-Ni oxide, it achieves significant advancements in specific capacitance and cycling stability, paving the way for efficient supercapacitor applications. The study's emphasis on Ce-doped Cu-Ni oxide highlights its potential as a key player in future charge storage supercapacitor technologies.
■学生の関わり様
スーパーキャパシタの基本原理から始まり、その中で電気二重層キャパシタ、シュードキャパシタ、ハイブリッドキャパシタに関して特徴の違いを紹介していただいた。その後、NiOやCuO、Cu-Ni酸化物、CeドープCu-Ni酸化物を電極へ応用したスーパーキャパシタについて研究実施例を述べられた。最新のハイブリッドキャパシタに関する非常に興味深い内容であった。
■講師：Dr.Amar L.Jadhav 先生
（ご所属）The Institute of Science, Dr. Homi Bhabha State University, India
■演題：The Metal Oxide Based Ce -Doped Cu-Ni Oxide Materials for Sustainable and Green Energy Electrochemical Charge Storage Applications
■日時：令和6年12月13日（金）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：Supercapacitors represent a vital category of electrochemical energy storage devices, with the electrode assuming a pivotal role. This thesis endeavors to elucidate the synthesis methodology of electrode materials, their characterization, and an in-depth analysis of their supercapacitive attributes. Additionally, it encompasses the fabrication and design aspects of supercapacitor devices. The electrode materials under scrutiny encompass NiO, CuO, Cu-Ni Oxide, and Ce-doped Cu-Ni oxide materials. The optimization process involves tailoring electrode materials for optimal charge storage applications, subsequently utilizing the most optimized electrodes for synthesizing Cu-Ni oxide and Ce-doped Cu-Ni oxide nanomaterials, and the subsequent fabrication of supercapacitor devices.
In the optimization of NiO, two parameters, namely the precursor concentration and thiourea solution, are meticulously optimized. Initially, binder-free NiO nanomaterials are synthesized via the hydrothermal method on stainless steel (SS) substrates. A similar procedure is employed for the synthesis of CuO materials on SS substrates. Notably, both NiO and CuO exhibit distinct morphological structures, with NiO showcasing 1D-3D aggregated flower-like structures and CuO displaying crumb-like hollow flower structures, each achieving maximum specific capacitances of 855.6 and 1525 F/g, respectively, at a scan rate of 5 mV/s. Furthermore, binder-free 3D marigold flower-like Cu-Ni oxide is deposited using the hydrothermal method on SS substrates, showcasing a maximum specific capacitance of 2780 F/g at a scan rate of 2 mV/s. Similarly, the optimized marigold flower-like 5 mM Ce-doped Cu-Ni oxide, synthesized via hydrothermal means, achieves a maximum specific capacitance of 3281.2 F/g at a scan rate of 2 mV/s. Moreover, the optimized Ce-doped Cu-Ni oxide nanomaterials exhibit remarkable performance in a mixed electrolyte, with a maximum specific capacitance of 3952.8 F/g at 2 mV/s, retaining 98% of its capacitance after 15000 cycles.
Finally, the optimized NiO, CuO, composite Cu-Ni oxide, and Ce-doped Cu-Ni oxide is utilized for the fabrication of solid symmetric and asymmetric electrochemical hybrid supercapacitor devices. Successful fabrication of asymmetric supercapacitor devices is achieved, incorporating various electrode combinations and solid-state PVA-KOH gel polymer electrolyte, with a polymer membrane serving as a separator. This study underscores an efficient methodology for supercapacitor electrode fabrication, highlighting Ce-doped Cu-Ni oxide nanomaterials as promising candidates for charge storage supercapacitor applications.
Overview, this work explores the crucial role of supercapacitors in electrochemical energy storage, focusing on electrode synthesis, characterization, and device fabrication. By optimizing materials like NiO, CuO, Cu-Ni Oxide, and Ce-doped Cu-Ni oxide, it achieves significant advancements in specific capacitance and cycling stability, paving the way for efficient supercapacitor applications. The study's emphasis on Ce-doped Cu-Ni oxide highlights its potential as a key player in future charge storage supercapacitor technologies.
■学生の関わり様
スーパーキャパシタの基本原理から始まり、その中で電気二重層キャパシタ、シュードキャパシタ、ハイブリッドキャパシタに関して特徴の違いを紹介していただいた。その後、NiOやCuO、Cu-Ni酸化物、CeドープCu-Ni酸化物を電極へ応用したスーパーキャパシタについて研究実施例を述べられた。最新のハイブリッドキャパシタに関する非常に興味深い内容であった。
