Article
Energy & Fuels
Chia-Sheng Liu, Cheng-Liang Huang, Hsing-Chih Fang, Kuo-Yung Hung, Chien-An Su, Yuan-Yao Li
Summary: The study utilized coaxial fiber cables to achieve high specific capacitance in aqueous solution, high energy density, and power density within a linear working range. The binder-free, conductive-medium-free cable mat is foldable and suitable for use in flexible SC devices.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Multidisciplinary Sciences
X. Wang, J. Chu, H. J. Yan, H. K. Zhang
Summary: In this study, eggplant carbon (EC) was derived from eggplant skin and used to prepare MnO2/EC composite. The composite exhibited well-defined morphology and structure and showed excellent electrochemical performance. Due to the synergistic effect, the MnO2/EC composite can be used for energy storage in high-performance supercapacitors.
Article
Chemistry, Physical
Haijing Shen, Xiaodong Kong, Pu Zhang, Xiaolan Song, Hui Wang, Ying Zhang
Summary: In this study, MnO2/soybean pod carbon composite material was successfully synthesized, showing high specific capacitance and good cyclic stability. It is a promising electrode material for next-generation supercapacitors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Pawanpreet Kour, Deeksha, Kamlesh Yadav
Summary: Mixed-phase 1T/2H MoS2 has been synthesized via conventional hydrothermal (HT) and microwave-assisted hydrothermal (MHT) techniques, and their electrochemical performances were compared. The results show that MoS2 synthesized by the hydrothermal method exhibits superior electrochemical performance, including higher capacitance and higher capacitance retention.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Yi Wang, Jie Wang, Dong Wei, Lan Xu
Summary: In this study, a multicore-shell ternary composite electrode material (MnO2@Ppy@NPCNFs) was prepared by using surface modification, which showed excellent electrochemical performances. The core-shell Ppy@N-doped porous carbon nanofibers (Ppy@NPCNFs) were used as a substrate, and MnO2 was loaded on the substrate by hydrothermal synthesis. The optimal parameters for the hydrothermal growth of MnO2 on Ppy@NPCNFs were explored, and the resulting MnO2@Ppy@NPCNFs exhibited high specific capacitance and good capacitance retention.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Ceramics
Mu Zhang, Le Chen, Yang Yu, Xianfeng Meng, Jun Xiang
Summary: In this study, carbon nanofiber supported cobalt ferrite composites (C/CFO) were prepared using electrospinning and hydrothermal methods, displaying excellent microwave absorption properties due to their unique 3D network structure, composite composition, and synergistic effect between C NFs and CFO NPs. With 10 wt % of CFO NPs, the C/CFO samples exhibited superior RLmax of -137 dB at 11.36 GHz and EAB (RL < -10 dB) of 11.44 GHz (6.59 GHz-18 GHz), surpassing single component absorbents, showing great potential for military and civilian applications.
CERAMICS INTERNATIONAL
(2021)
Article
Energy & Fuels
Mengru Li, Liming Qin, KangTai Ou, Zhiyuan Xiong, Hengyu Zheng, Youyi Sun
Summary: A new double-layer hybrid electrode based on MnO2 nanofibers was prepared by the electrostatic flocking method, which reduces interfacial resistance and improves the energy density and cyclic life of the supercapacitor.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Nanoscience & Nanotechnology
Rakesh K. Sahoo, Je Moon Yun, Kwang Ho Kim
Summary: The study reports the synthesis of dual-function molybdenum-complex carbonous sponges for electrochemical devices, demonstrating their utilization as positive and negative electrodes with outstanding specific capacitances. The assembled asymmetric supercapacitor shows high power density and energy density, along with excellent cycle stability. Additionally, the materials exhibit significant electrocatalytic capabilities for the hydrogen evolution reaction and oxygen evolution reaction in a water-splitting electrocatalyzer.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Qasim Abbas, Lianghua Wen, Abdul Mateen, Najam Ul Hassan, Asim Idrees, Zia Ur Rehman, Majed A. Bajaber, Muhammad Sufyan Javed
Summary: This study synthesized hexagonal-phase manganese dioxide nanoparticles on conductive carbon cloth through a simple hydrothermal strategy. The resulting structure showed a large specific surface area and high porosity, making it an excellent candidate for positive electrode materials in high-performance supercapacitors. The electrode exhibited a high specific capacitance and excellent cycling stability.
Article
Energy & Fuels
Muhammad Usman Khalid, Khadijah Mohammedsaleh Katubi, Sonia Zulfiqar, Z. A. Alrowaili, Muhammad Aadil, M. S. Al-Buriahi, Muhammad Shahid, Muhammad Farooq Warsi
Summary: A novel Ag-MnO2/MXene@NF electrode was developed by incorporating hydrothermal and post-sonication processes to boost its overall activity. Ag-doping and MXene reinforcement improved the conductivity of MnO2, while the sandwiching of Ag-MnO2 NWs between MXene sheets resulted in a hetero-structured composite with superb conductivity and high surface area. The nanostructured and spongy structure of Ag-MnO2/MXene@NF allowed for higher capacitance, impressive rate capability, and superb cyclic activity, making it suitable for advanced energy storage devices.
Article
Engineering, Electrical & Electronic
Surendra Jangu, Sudhir Kumar, Kilingaru Nadumane Deepika, Chacko Jacob, Debabrata Pradhan
Summary: The synthesis of Cu-doped MnO2 nanomaterials with enhanced specific surface area was demonstrated using the microwave-assisted hydrothermal method. The Cu-doping resulted in a change in morphology from nanorods to nanoflowers, leading to improved supercapacitor performance. A two-electrode asymmetric supercapacitor device showed a maximum energy density of 77.78 Wh kg(-1) and a capacitance retention of 102.86% after 20,000 charge-discharge cycles.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Tao Lin, Jiacheng Lin, Xiaoyao Wei, Lulu Lu, Xuefeng Yin
Summary: Among the electrode materials of supercapacitors, transition metal oxides, including MnO2, have shown promising properties. However, the low conductivity, agglomeration, and volume change of MnO2 lead to its limited specific capacitance. To address this issue, attapulgite is introduced as a composite material to enhance the electrochemical performance. The ATP-MnO2 composites exhibit higher specific capacitance and better cycle stability compared to pure MnO2 nanoflowers.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Analytical
Yu Jun Yang, Jia Dong, Caili Zhang, Xiuxia Ding, Yaxin Li, Hanyu Ren, Fanshu Guo
Summary: The research successfully synthesized Ni-HCF nanocubes on nickel foam through a one-step hydrothermal method, showing excellent performance in electrochemical properties, cycling life, and assembly of an asymmetric supercapacitor.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Engineering, Electrical & Electronic
Lorena Cuellar-Herrera, Elsa Arce-Estrada, Antonio Romero-Serrano, Jose Ortiz-Landeros, Roman Cabrera-Sierra, Cindy Tirado-Lopez, Aurelio Hernandez-Ramirez, Josue Lopez-Rodriguez
Summary: Two hydrothermal techniques under microwave irradiation were used to synthesize gamma-MnO2 with different morphologies. The nanorods obtained by the first technique exhibit a high specific surface area, while the flower-like microspheres obtained by the second technique show promising electrochemical performance.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Physical
Jingjing Li, Bin Hu, Pengfei Nie, Xiaohong Shang, Wenwen Jiang, Kaibing Xu, Jianmao Yang, Jianyun Liu
Summary: Various structures of Birnessite-type MnO2 (delta-MnO2) nanosheet assembly were achieved via redox reactions of KMnO4 under acidic conditions with Fe regulation on Fe-doping carbon nanofibers (Fe-CNFs). Adjusting the Fe content in the Fe-CNFs template can impact the morphology of delta-MnO2, leading to high specific capacitance and superior cycling stability. The obtained composite of delta-MnO2@Fe-CNF-5% exhibited excellent electrochemical performance, making it a promising material for charge storage and deionization applications.
APPLIED SURFACE SCIENCE
(2021)
Article
Energy & Fuels
Cho-Yen Li, Fitri Nur Indah Sari, Jyh-Ming Ting
Article
Chemistry, Physical
Kuan-Nien Chen, Fitri Nur Indah Sari, Jyh-Ming Ting
APPLIED SURFACE SCIENCE
(2019)
Article
Engineering, Multidisciplinary
Fitri Nur Indah Sari, Yen-Chun Liu, Jyh-Ming Ting
COMPOSITES PART B-ENGINEERING
(2019)
Article
Electrochemistry
Fitri Nur Indah Sari, Jyh-Ming Ting
ELECTROCHIMICA ACTA
(2019)
Article
Materials Science, Ceramics
Fitri Nur Indah Sari, Sang-Hsuan Lu, Jyh-Ming Ting
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2020)
Article
Materials Science, Coatings & Films
Meladia Elok Purbarani, Fitri Nur Indah Sari, Jyh-Ming Ting
SURFACE & COATINGS TECHNOLOGY
(2019)
Article
Chemistry, Physical
Fitri Nur Indah Sari, Duong Thi Kim Yen, Jyh-Ming Ting
APPLIED SURFACE SCIENCE
(2020)
Article
Engineering, Environmental
Fitri Nur Indah Sari, Setiawan Abdillah, Jyh-Ming Ting
Summary: A new FeOOH-containing FVO material exhibits superior OER and overall water splitting activities, with performance influenced by FeOOH, oxygen vacancy, and crystal water. The optimized electrocatalyst shows high OER current densities at excellent overpotentials and excellent water electrolysis performance in alkaline electrolyte.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Fitri Nur Indah Sari, Kuang-Cheng Lin, Jyh-Ming Ting
Summary: In this study, ternary metal hydroxide nanorods were grown on Ni foam using a facile hydrothermal method for novel electrode applications in pseudocapacitors. The resulting core-shelled structure exhibited excellent electrochemical performance, including high specific capacitance, retention, and cycling stability. Furthermore, when evaluated as a positive electrode in an asymmetric supercapacitor, the core-shelled structure demonstrated outstanding energy density and cycling stability.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Environmental
Fitri Nur Indah Sari, Hong-Sheng Chen, Aswin Kumar Anbalagan, Yan-Jia Huang, Shu-Chih Haw, Jin-Ming Chen, Chih-Hao Lee, Yen-Hsun Su, Jyh-Ming Ting
Summary: This study demonstrates for the first time that the OER activity of beta-FeOOH can be enhanced through V-doping and the generation of iron and oxygen vacancies. Various analyses and experiments show that V-doping regulates the formation of oxygen vacancies and metallic Fe in the beta-FeOOH, resulting in improved charge transfer characteristics. The V-doped, divacancy-containing beta-FeOOH exhibits excellent OER performance, outperforming benchmark catalysts and showing high current density and stability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Electrochemistry
Fitri Nur Indah Sari, Ngoc Thanh Thuy Tran, Yi-Xin Lin, Siang-Yun Li, Yun-Hwei Shen, Jyh-Ming Ting
Summary: This paper presents an experimental and theoretical study on multi-metal hydroxide modified with electronic structure doping, which exhibits enhanced electrochemical performance for supercapacitor and oxygen evolution reaction (OER) applications. The study shows that increasing the metal content improves the electrochemical performance, with the hydroxide containing 5 cations (high entropy hydroxide, HEOH) showing the best performance. The HEOH demonstrates excellent specific capacity, rate retention, and cycle stability, and also shows superior performance in OER compared to the benchmark catalyst.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Fitri Nur Indah Sari, Gally Frenel, Alex Chinghuan Lee, Yan-Jia Huang, Yen-Hsun Su, Jyh-Ming Ting
Summary: In this study, multi-high valence 3d transition metal (TM) doping is demonstrated to enhance the oxygen evolution reaction (OER) activity and stability of NiFe hydroxide. Self-supported NiFe hydroxides with various high valence 3d TM dopants are prepared using a simple Ni-corrosion method. The high-valence metal dopants effectively modify the electronic structure of Ni and improve the catalytic performance of the NiFe hydroxide. The optimized NiFe hydroxide with V, Ti, and Cr dopants shows superior OER activity and stability compared to benchmark catalysts.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Review
Chemistry, Multidisciplinary
Tahta Amrillah, Che Azurahanim Che Abdullah, Angga Hermawan, Fitri Nur Indah Sari, Vani Novita Alvani
Summary: The unique properties of MXenes have drawn significant interest in various emerging applications. However, the environmentally harmful and toxic substances involved in their fabrication pose a major drawback. Therefore, it is crucial to develop greener, safer, and more sustainable MXene synthesis methods. This review summarizes the latest progress in the green synthesis of MXenes, highlighting their advantages and potential applications in energy, environment, and medicine.
Article
Chemistry, Multidisciplinary
Van Thanh Nguyen, Fitri Nur Indah Sari, Jyh-Ming Ting
Summary: This article presents the use of room-temperature synthesized 3D hierarchical cobalt vanadate nanosheet arrays as supercapacitor electrodes. By adding a redox additive, the electrode's capacitance is significantly enhanced, and the obtained cobalt vanadate shows potential for practical application.
Article
Engineering, Electrical & Electronic
Tahta Amrillah, My Ngoc Duong, Yu-Xun Chen, Yugandhar Bitla, Malik Anjelh Baqiya, Fitri Nur Indah Sari, Le Thi Quynh, Angga Hermawan, Firman Mangasa Simanjuntak, Chia-Hao Chen, Kaung-Hsiung Wu, Jenh-Yih Juang
Summary: YMO thin films exhibit distinctly different microstructures, electronic structures, and magnetic properties grown on substrates with different polarities, indicating the substantial influence of substrate surface polarity on film properties.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
