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Future Perspectives of Polymer Supercapacitors for Advanced Energy Storage Applications
Published in Soney C George, Sam John, Sreelakshmi Rajeevan, Polymer Nanocomposites in Supercapacitors, 2023
Ajalesh Balachandran Nair, Shasiya Panikkaveettil Shamsudeen, Minu Joys, Neethumol Varghese
The supercapacitor is a novel type of device to store energy and it is an advanced form of conventional capacitor, which contains two electrode materials. They are progressively used for energy transformation and in storing energy. Interest in the field of supercapacitors is mainly owing to their excellent energy capacity, excellent power density, outstanding storage capacity, faster charging and discharge rates, and longer shelf life. These important characteristics of supercapacitors bridge the performance gap between classical capacitors and novel secondary cells/rechargeable batteries, and they have tremendous applications such as in electronic communication, transportation, aerospace, and energy storage fields [1–3].
Carbon Nanotubes—A Pathway Toward Green Applications
Published in Ann Rose Abraham, Soney C. George, A. K. Haghi, Carbon Nanotubes, 2023
K. B. Bhavitha, Srinivasarao Yaragalla
Supercapacitors are effective replacement for conventional batteries, which turn out mass amount of waste to the environment. Supercapacitors also have the advantage of less size, high-power capacity, long cycle life, and high-energy capacity compared to the traditional batteries. Studies are reported for CNTs as efficient electrode material for the supercapacitors (Table 10.7).
Challenges and Perspectives of Li-Ion Batteries, Supercapacitors, and Hydroelectric Cells
Published in Anurag Gaur, A.L. Sharma, Anil Arya, Energy Storage and Conversion Devices, 2021
Anil Arya, Anurag Gaur, A.L. Sharma
Supercapacitors are energy storage devices and have gained the attention of the scientific community due to their high power density, long cycle life, and a broad range of applications. Electrodes and electrolytes are two crucial components and affect cell performance. Some of the important performance parameters for electrodes are electronic conductivity, pore size, specific surface area, and cost. For electrolytes, ionic conductivity, voltage stability window, thermal/mechanical/chemical stability, and ion/cation transference number are important parameters. The charge storage mechanism is also different in different systems, and the hybrid system is very complex. Charge storage mechanisms need to be understood in depth for better selection of material as well as to check their potential for safe operation with better cycle life. Still, there is room to improve these parameters but the challenge also on the road. Figure 7.2 depicts the major challenges and is followed by a detailed discussion as well as remedies.
Graphene-based electrodes for ECG signal monitoring: Fabrication methodologies, challenges and future directions
Published in Cogent Engineering, 2023
Rimita Dey, Pravin Kumar Samanta, Ram Pramod Chokda, Bishnu Prasad De, Bhargav Appasani, Avireni Srinivasulu, Nsengiyumva Philibert
Due to its unique properties, graphene can be used in various fields of application such as solar cells (Patchkovskii et al., 2005), hydrogen storage (Brownson & Banks, 2012), supercapacitors (Eda & Chhowalla, 2010; Yoo et al., 2011), electronics (Raju et al., 2014), strain sensors (Bunch et al., 2007), electromechanical systems (Schwierz, 2010), field effect transistor (Papageorgiou et al., 2015) and high end-composite materials (Potts et al., 2011; Shen et al., 2012). Graphene is a zero-gap semimetal with a two-dimensional planar structure, making its use in many applications difficult. Hence, graphene is being processed and made into different forms, for example, quantum dots (Jia et al., 2011) and nano-ribbons (Xue et al., 2012) and are used in foams (Wu et al., 2012; Xu et al., 2010) and in hydrogels (Song et al., 2020) for energy and biological applications. These are also used in semiconductor devices and for designing supercapacitor electrodes. With high power densities and quick charge/discharge cycles, supercapacitors, also known as ultra-capacitors or electrochemical capacitors, store energy through quick and reversible charge accumulation at the electrode-electrolyte interface. Graphene-based supercapacitor electrodes take advantage of the unique characteristics of graphene to achieve excellent performance and efficiency.
Research progress and prospect of hybrid supercapacitors as boosting the performance
Published in Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2022
Haiqiu Fang, Dezhi Li, Mingyao Zhao, Yang Zhang, Junwei Yang, Kai Wang
Supercapacitors are considered to be one of the most promising electrochemical energy storage devices, with capacities ranging from a few farads to thousands of farads and have the potential to supplement or eventually replace batteries for energy storage applications. Energy storage systems based on supercapacitors have been applied in wireless sensor networks, portable electronic products, smart grids, vehicle power supplies, and other fields. Supercapacitors can also be used in combination with rechargeable batteries to meet the additional power requirements of these applications. In recent years, researchers have proven the reliability of supercapacitors in embedded systems. Their long service life and almost zero maintenance costs make them the preferred components for many embedded applications.
Preparation by pulsed current electrochemical polymerisation and properties of ordered comb-shaped polyaniline/carbon fibres composites for flexible supercapacitor electrodes
Published in Transactions of the IMF, 2020
Gang Wei, Shuishui Gong, Jun Tang, Shanyi Guang, Hongyao Xu
Supercapacitors are outstanding energy storage devices, in particular for electronic devices outside of conventional electrolytic capacitors and rechargeable batteries, because of their unique properties including their high power density, fast charge–discharge properties and long-term stability.1–7 Currently, carbon fibres (CFs) have gained considerable interest due to their very good mechanical properties, good stability in the larger voltage window and high electrical conductivity.8 In addition, CFs possess a unique property that they can be directly used for supercapacitor electrodes and they will not need to receive further treatments.9 Nevertheless, the main drawback is their lower specific capacitance, which hinders the use of carbon fibres for large-scale applications.10 Thus, further improving the specific capacitance of CFs is the key to promote their applications.