Review
Chemistry, Physical
Yue Zhao, Huilian Hao, Tianliang Song, Xu Wang, Changwang Li, Wenyao Li
Summary: Supercapacitors have gained attention due to their long cycle stability, fast charge-discharge performance, and high-power density. This review summarizes the synthetic strategies and research progress of MnO2-graphene-based multi-element composites, including their combination with various carbon materials, transition metal oxides, and conducting polymers. The possible development directions of MnO2-graphene-based composite electrode materials in the future are also discussed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Jianghe Liu, Zeba Khanam, Sultan Ahmed, Hengtai Wang, Ting Wang, Shenhua Song
Summary: A novel gel polymer electrolyte (GPE) membrane based on the PVdF-HFP/EMITf/Al(Tf)(3) system has been developed with high ionic conductivity and wide electrochemical stability window, showing outstanding performance under different temperatures.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Multidisciplinary
Jaron Moon, Virginia Diaz, Dhruv Patel, Robert Underwood, Roseanne Warren
Summary: This work explores the use of a conducting polymer that can dissolve in mild aqueous conditions as a super-capacitor material. The new polymer (MPC polymer) is prepared and compared with polypyrrole (PPY). The results show that the MPC polymer has similar charge storage performance and lower resistance.
ORGANIC ELECTRONICS
(2022)
Article
Chemistry, Applied
Han-Wei Chang, Yu-Cheng Huang, Jeng-Lung Chen, Chi-Liang Chen, Jin-Ming Chen, Da-Hua Wei, Wu-Ching Chou, Chung-Li Dong, Yu-Chen Tsai
Summary: Electrochemistry and X-ray absorption spectroscopy (XAS) were used to evaluate the capacitive performance and electronic structure of MnO2/reduced graphene oxide (RGO) as a supercapacitor. The specific capacitance of MnO2/RGO increased with the growth time, and the contributions to the capacitance were from electrochemical double-layer capacitance and pseudocapacitance.
Review
Polymer Science
Md. Ikram Ul Hoque, Rudolf Holze
Summary: This article discusses the application of intrinsically conducting polymers (ICPs) combined with electrochemically active materials as active masses in supercapacitor electrodes. The roles of the constituents of the composites and possible synergistic effects are highlighted. The stability of composite electrode materials, a crucial property for practical use, is also addressed, taking into account the causes and effects of materials degradation.
Article
Chemistry, Physical
Mi He, Linli Cao, Weilong Li, Xinwei Chang, Zhaoyu Ren
Summary: A hierarchical alpha-MnO2 nanotube@delta-MnO2 nanoflake structure was successfully fabricated on 3D graphene foam as a lightweight and free-standing electrode for supercapacitors. The composite electrode exhibited excellent electrochemical performance, with a maximum specific capacitance achieved at 60% MnO2 mass percentage. An asymmetric supercapacitor based on the GF@MNT@MNF composites showed a great energy density under a wide potential range.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Energy & Fuels
Elumalai Dhandapani, Sadhasivam Thangarasu, S. Ramesh, K. Ramesh, R. Vasudevan, Navaneethan Duraisamy
Summary: This article discusses the recent developments in active electrode materials in supercapacitors, focusing on the applications of carbonaceous materials and conducting polymers in this field.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Multidisciplinary
Gu Liu, Jian Liu, Kejun Xu, Liuying Wang, Shanxin Xiong
Summary: A quick and convenient method was presented to prepare graphene paper as a flexible current collector, combined with MnO2 to obtain a flexible supercapacitor composite electrode without using binder or conductive agent. The electrochemical performance was significantly improved, showing high specific capacitance.
Article
Chemistry, Physical
Yang Zhou, Xinying Cheng, Feng Huang, Zhao Sha, Zhaojun Han, Junyan Chen, Wenmu Yang, Yuyan Yu, Jin Zhang, Shuhua Peng, Shuying Wu, Andrew Rider, Liming Dai, Chun H. Wang
Summary: A new approach to create hierarchically structured electrodes for supercapacitors allows them to retain capacity under mechanical deformation, enabling the fabrication of high-performance moldable energy storage devices for wearable electronics and wireless electronic skins.
Article
Polymer Science
Wen-Jun Zhuo, Yen-Hua Wang, Chia-Tse Huang, Ming-Jay Deng
Summary: In this study, nanostructured polypyrrole-coated MnO2 nanofibers grown on carbon cloth (PPy-MnO2-CC) were used as electrodes along with a quasi-ionic liquid-based polymer gel electrolyte for solid-state symmetric supercapacitors. The resulting solid-state supercapacitors exhibited high specific capacitance, energy/power density, cycling stability, and rate capability, surpassing most previously reported supercapacitors. The outstanding performance of the flexible PPy-MnO2-CC solid-state supercapacitors is attributed to the design of the nanostructured PPy-coated MnO2 composite electrode and the urea-LiClO4-PVA polymer gel electrolyte.
Article
Chemistry, Physical
Yichen Wang, Bingquan Hu, Jing Luo, Yao Gu, Xiaoya Liu
Summary: In this study, a facile method was developed to construct polyaniline@MnO2/graphene ternary hybrid hollow spheres via Pickering emulsion polymerization. The PANI@MnO2/GR HS exhibited significantly improved electrochemical performance with a maximum specific capacitance of 743.8 F g(-1) and good cycling stability, retaining 93% of the initial value after 2000 cycles.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
V. J. Mane, S. B. Kale, S. B. Ubale, V. C. Lokhande, C. D. Lokhande
Summary: This study prepared Ag-doped MnO2/GO composite thin films using the SILAR method, which exhibited high specific surface area and excellent electro-chemical performance with a maximum specific capacitance of 877 F g(-1) and capacity retention of 94.57% in the electrolyte. The flexible solid state symmetric supercapacitor device showed good cycling stability and electro-chemical performance with a specific capacitance of 164 F g(-1) and capacitive retention of 94% after 10,000 cycles.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Chemistry, Analytical
Bengu Getiren, Hasan Altinisik, Furkan Soysal, Zafer Ciplak, Nuray Yildiz
Summary: In this study, a ternary nanocomposite of N-rGO-MnO20.5-PANI6 was synthesized for the first time through a simple approach. This nanocomposite exhibited high capacitance (405.2 F/g), excellent rate capability (96.6% capacitance retention at 5 A/g), long cycle stability (86.1% capacitance retention after 5000 cycles), and high energy and power density (13.9 Wh/kg and 260.6 W/kg at 1 A/g). Therefore, this ternary nanocomposite shows great potential as an electrode material for supercapacitor applications.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Polymer Science
Yu-Hao Lin, Wan-Tien Huang, Yi-Ting Huang, Yi-Ni Jhang, Tsung-Ting Shih, Murat Yilmaz, Ming-Jay Deng
Summary: Flexible electrochemical supercapacitors (FESCs) are innovative energy storage systems characterized by stable performance, long cycle life, and portability/foldability. This study investigates deep eutectic solvent (DES)-based polymer gel systems as crucial components for FESCs, showing cost-effective accessibility, simple synthesis, excellent biocompatibility, and exceptional thermal and electrochemical stability. The use of a unique ion-transport process enhances the overall electrochemical performance of the polymer gel electrolyte.
Article
Engineering, Environmental
Hangtian Zhu, Lingyun Li, Minjie Shi, Peng Xiao, Yuting Liu, Xingbin Yan
Summary: Utilizing ionic liquid as electrolyte, a GQDs@MnO2 composite electrode is constructed for IL-based supercapacitor, which exhibits superior capacitive storage, rapid charge-discharge response and high electrochemical reversibility.
CHEMICAL ENGINEERING JOURNAL
(2022)
