Article
Engineering, Electrical & Electronic
Milad Shobeiri, Kazem Tahmasebi, Seied Mohammad Ali Hosseini
Summary: Urcina-like NiCo2O4 nanoneedles were synthesized on a nickel foam using hydrothermal synthesis, and the surface of the structure was modified to a candle-like nano-array through electrodepositing of Ni3S2. The resulting core-shell structure electrode exhibited outstanding specific capacity and rate capability, as well as excellent capacity retention after cycling. It is concluded that the surface modification of the NiCo2O4 electrode enhances electron transfer and improves the capacitive performance of the NiCo2O4@Ni3S2 electrode.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Energy & Fuels
M. Karnan, Om Priya Nanda, Lignesh Durai, Sushmee Badhulika
Summary: This study describes the synthesis of crystalline BCO nanoflakes as a supercapacitor electrode material using a simple, one-step hydrothermal method. The BCO material exhibits high specific capacity and energy and power densities.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Biochemistry & Molecular Biology
Xue Wan, Fei Shen, Jinguang Hu, Mei Huang, Li Zhao, Yongmei Zeng, Dong Tian, Gang Yang, Yanzong Zhang
Summary: Research on using oxidized lignin to prepare activated carbon for high-performance supercapacitors revealed excellent porous morphology and outstanding electrochemical performances in the resultant carbon materials, showing potential for advanced energy storage applications.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Engineering, Electrical & Electronic
Ligang Cheng, Qingwei Wang, Juan Ding
Summary: Intermetallic compounds are widely used in various fields due to their unique properties. In this study, FeNi3/rGO composite was prepared and characterized, showing excellent capacitance performance through electrochemical tests. This composite shows promise for future applications in supercapacitors and nanodevices.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Chunhua Zhao, Shufan Han, Yanzhen Ding, Yongrong Yang, Ruiqi Jiang, Chongjun Zhao
Summary: This study reports the preparation of binder-free electrodes composed of nanostructured NiO/Ni(OH)2 covered with pseudo-capacitive materials loaded on a conductive substrate through a one-step hydrothermal process using amino acids as the carbon source. The resulting electrode showed battery-like behavior and outstanding charge/discharge performances, with a specific capacitance of 2586 F g-1 at 2.8 A g-1 and excellent stability with 91.30% retention after 20,000 cycles.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Dunyuan Jin, Fen Qiao, Wenjie Liu, Yanzhen Liu, Yi Xie, Haitao Li
Summary: This study synthesized an efficient P-doped molybdenum disulfide/nickel subsulfide catalyst and optimized its electronic structure, improving the electrolytic performance of water. The catalyst exhibited low overpotentials for both oxygen and hydrogen electrocatalytic reactions, and a low voltage was required for the desired current density during water electrolysis.
Article
Chemistry, Physical
Numa A. Althubiti, Salma Aman, Naseeb Ahmad, Hafiz Muhammad Tahir Farid, Taha Abdel Mohaymen Taha
Summary: Transition metal oxides (TMOx) are promising materials for supercapacitors due to their high specific capacitance, safety, and notable electrochemical activity. This research focuses on the synthesis of Ce-doped Ni3S2 nanostructures using a surfactant-free hydrothermal method. The Ce-doped Ni3S2 exhibits enhanced cycling stability and demonstrates excellent electrochemical performance, with a maximum specific capacitance of 2349.10 F g-1 and energy density of 72.07 Wh kg-1 at 1 A g-1. This study highlights the potential of 0.3-CNS as a symmetric electrode material for next-generation supercapacitors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Applied
Song Lv, Liya Ma, Xinyu Shen, Hua Tong
Summary: Porous carbon nanotubes are a promising electrode material for supercapacitors, with high specific surface area and excellent electrochemical performance. Factors affecting their growth have been identified, and discussions on the relationships between their morphology and structure have been made.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Fangbo Yao, Wenruo Li, Shabrina Khainunni, Jiaojiao Ma, Choji Fukuhara, Chang Yi Kong
Summary: In this study, a simple and environmentally friendly hydrothermal method for synthesizing fragment-reduced graphene oxide (FrGO) without the use of reducing agents was reported. The FrGO was used as an electrode material for a supercapacitor. The results showed that the addition of certain additives improved the material's characteristics, leading to a higher specific capacitance and better stability. This research provides guidance for the development of electrode materials for various supercapacitor devices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Inorganic & Nuclear
Tiansheng Li, Zhifeng Zhao, Zhanhua Su, Shuangyan Lin, Rui Sun, Yongchen Shang
Summary: Transition metal sulfides (TMSs) are promising electrode materials for high-performance supercapacitors due to their reversible redox reactions and good conductivity, but their volume expansion during charge/discharge process hinders practical applications. In this study, a Ni3S2/Co9S8/NiS composite was prepared by electrodeposition on Ni foam, which exhibited a high specific capacity of 2785.3 F g(-1) at 1 A g(-1) and excellent rate capability. The assembled device also showed a high energy density of 40.1 W h kg(-1) at a power density of 799.3 W kg(-1) and a satisfactory stability with 96.6% retention after 5000 cycles. This work provides a facile method to fabricate new TMS electrode materials for high-performance supercapacitors.
DALTON TRANSACTIONS
(2023)
Article
Energy & Fuels
Lingqi Huang, Zhiyong Luo, Mingwu Luo, Qi Zhang, He Zhu, Kaiyuan Shi, Shiping Zhu
Summary: This study developed a straightforward one-step method to prepare nitrogen-fluorine dual-doped porous carbon with excellent specific surface area and high doping levels, demonstrating superior performance in supercapacitive electrodes and devices, offering a new protocol for synthesis of high-performance carbon-based materials for energy-storage applications.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Materials Science, Ceramics
Aviraj M. Teli, Sonali A. Beknalkar, Yu Ri Lee, Jae Cheol Shin
Summary: The present work aims to synthesize a quaternary metal oxide by a simple and cost-effective method and analyze its electrochemical performance. The results show that the synthesized MoVMnAg-oxide@Ni-foam has high areal capacitance and energy storage density, making it suitable for energy storage applications.
CERAMICS INTERNATIONAL
(2022)
Article
Agricultural Engineering
Lu Luo, Yalan Zhou, Wen Yan, Lingcong Luo, Jianping Deng, Guanben Du, Mizi Fan, Weigang Zhao
Summary: Activated carbon fiber (ACF) from Chinese fir wood powder by melt-spinning was used to prepare a NiCo-LDH@ACF composite material via a microwave-assisted synthesis method, which shows great potential as electrode materials for energy storage devices. The Ni1Co1-LDH@ACF composite exhibits the largest specific capacitance and high rate performance at a molar ratio of Ni2+/Co2+ of 1:1. Moreover, the assembled asymmetric supercapacitor device with NiCo-LDH@ACF composites and fir bark-based activated carbons demonstrates superior energy density and cycle life.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Materials Science, Coatings & Films
Shuo Yu, Xinbo Xiong, Jun Ma, Haixia Qian
Summary: A novel route for preparation of NiCo-OH/CoS composite film as an electrode material for supercapacitors was developed, which delivers high specific capacitance and long cycling stability.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Chemistry, Physical
Bing Lu, Lingxiao Lv, Xinqun Zhang, Yang Zhao, Qing Chen, Huhu Cheng, Liangti Qu
Summary: Defective carbon materials, especially graphene, have shown great potential in energy conversion and storage due to their unique properties. Traditional preparation methods are destructive and tedious, while a new high-temperature hydrothermal method presented in this work allows for the synthesis of high defect density graphene materials with superior electrocatalytic activity and high capacitance.
JOURNAL OF POWER SOURCES
(2021)
