A novel MoP2@Ni2P nanosheet and an individual kelp-based porous carbon for assembly a unique high performance asymmetric supercapacitor

Sun, Kanjun; Cui, Shuzhen; Xiao, Lele; Hou, Wenbo; Peng, Hui; Ma, Guofu

doi:10.1016/j.est.2023.107392

Cited by 8 publications

(4 citation statements)

References 72 publications

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“…Under these data parameters, the energy density provided is up to 46.84 W h kg −1 . Compared with previous studies, the performance of the device reaches a better state [42][43][44][45][46][47][48][49][50][51][52][53][54]. Even if the current density is increased by 6 times, the energy density can still be maintained at 27.63 W h kg −1 at a power density of 5100 W kg −1 .…”

Section: Resultsmentioning

confidence: 68%

Vanadate-based Fe-MOFs as promising negative electrode for hybrid supercapacitor device

Wang,

Lu,

Wang

et al. 2024

Nanotechnology

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In the supercapacitor field, negative electrodes are mainly concentrated in carbon-based materials, such as activated carbon, carbon nanotubes, graphene, and so forth. However, materials based on metal-organic frameworks (MOFs) as negative active components are relatively rare. Herein, a series of composite materials based on graphene oxide (GO) and vanadate-based Fe-organic frameworks have been prepared by hydrothermal method namely GO/Fe-VO4-BIPY. The deposition amount of polyoxometalate-based metal-organic frameworks (POMOFs) on the surface of graphene is adjusted by changing the content of POMOFs. Through the deposition, it can effectively reduce the accumulation between graphene, and increase the dispersion of POMOFs. As a result, the charge storage performance of the as-obtained materials is greatly improved. Among these materials, GO/Fe-VO4-BIPY-1 has the most prominent performance due to its excellent synergistic effect between the Faraday chemical reaction and electric double-layer capacitance. In comparison with pristine Fe-VO4-BIPY, GO/Fe-VO4-BIPY-1 delivers more excellent surface area and therefore exhibits abundant redox reaction sites, achieving better electrochemical performance the best. After assembly with the positive Ni(OH)2 electrode, the maximum energy density of 46.84 W h kg-1 at a power density of 850 W kg-1 is achieved.

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Section: Resultsmentioning

confidence: 68%

Vanadate-based Fe-MOFs as promising negative electrode for hybrid supercapacitor device

Wang,

Lu,

Wang

et al. 2024

Nanotechnology

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“…From electrochemical analysis using a three-electrode system, the C-CA-based electrode exhibited superior performance compared to the C-TL-based electrode in the potential range of −1.0 to 0 V. Similarly, the C-CA@NiO-based electrode demonstrated better performance than the C-TL@NiO-based electrode in the range of 0 to 1.0 V. By employing C-CAand C-CA@NiO-based electrodes with different operating potentials, the voltage window can be extended to provide positive and negative electrodes for the ASC device [87]. Therefore, a solid-state ASC (C-CA@NiO//C-CA) was assembled using C-CA@NiO as the positive electrode, C-CA as the negative electrode, and PVA/Na 2 SO 4 as the gel electrolyte.…”

Section: Electrochemical Performance Of the Assembled Asc Devicementioning

confidence: 97%

Preparation of a High-Performance Asymmetric Supercapacitor by Recycling Aluminum Paper and Filter Components of Heated Tobacco

Kim,

Jekal,

Kim

et al. 2023

Materials

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In this study, Al paper and cellulose acetate (CA) filters derived from heated tobacco waste were successfully converted into current collectors and active materials for a supercapacitor device. Typically, heated tobacco contains electrically discontinuous Al paper. First, Al was extracted from the tobacco waste using HCl to produce Lewis acid (AlCl3). This acid was then used in an Al electrodeposition process utilizing the chloroaluminate ionic liquid reaction between the acid and the base (RCl) at room temperature. To enhance the conductivity, a supplementary coating of Al metal was applied to the Al paper through electrodeposition, thus re-establishing the electrical continuity of the discontinuous parts and forming an Al-coated current collector. Moreover, the CA filters were carbonized under a nitrogen atmosphere, yielding carbon precursors (C-CA) for the supercapacitor electrodes. To further enhance the electrochemical performance, nickel oxide (NiO) was incorporated into C-CA, resulting in C-CA@NiO with pseudocapacitance. The specific surface area of CA increased with carbonization and the subsequent incorporation of NiO. The as-synthesized C-CA and C-CA@NiO materials were applied to an Al-coated current collector to obtain C-CA- and C-CA@NiO-based electrodes, exhibiting stable electrochemical behavior in the voltage range of −1.0 to 0 V and 0 to 1.0 V, respectively. An asymmetric supercapacitor (ASC) device was assembled with C-CA@NiO and C-CA as the positive and negative electrodes, respectively. This ASC device demonstrated a high specific capacitance of 40.8 F g−1, while widening the operating voltage window to 2.0 V. The high electrochemical performance of the device is attributed to the successful Al electrodeposition, which facilitates the electrical conductivity and increased porosity of the C-CA@NiO and C-CA materials. To the best of our knowledge, this is a pioneering study in regards to the conversion of biomass waste into current collectors and active materials to fabricate a practical ASC device. Our findings highlight the potential of reusing Al paper and CA filters from heated tobacco waste as essential components of energy storage devices.

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“…Table 1 provides a summary of the parameters of TENG or SC cell materials in recent years (Table 1). There are also some new materials for supercapacitors that have been reported and confirmed to have practical value [86][87][88], demonstrating their potential in TENG−SCs, and people can choose among them according to their actual needs.…”

Section: Multi−functional Teng−scs That Are Based On Cellular Materialsmentioning

confidence: 99%

The Integration of Triboelectric Nanogenerators and Supercapacitors: The Key Role of Cellular Materials

et al. 2023

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The growing demand for sustainable and efficient energy harvesting and storage technologies has spurred interest in the integration of triboelectric nanogenerators (TENGs) with supercapacitors (SCs). This combination offers a promising solution for powering Internet of Things (IoT) devices and other low−power applications by utilizing ambient mechanical energy. Cellular materials, featuring unique structural characteristics such as high surface−to−volume ratios, mechanical compliance, and customizable properties, have emerged as essential components in this integration, enabling the improved performance and efficiency of TENG−SC systems. In this paper, we discuss the key role of cellular materials in enhancing TENG−SC systems’ performance through their influence on contact area, mechanical compliance, weight, and energy absorption. We highlight the benefits of cellular materials, including increased charge generation, optimized energy conversion efficiency, and adaptability to various mechanical sources. Furthermore, we explore the potential for lightweight, low−cost, and customizable cellular materials to expand the applicability of TENG−SC systems in wearable and portable devices. Finally, we examine the dual effect of cellular materials’ damping and energy absorption properties, emphasizing their potential to protect TENGs from damage and increase overall system efficiency. This comprehensive overview of the role of cellular materials in the integration of TENG−SC aims to provide insights into the development of next−generation sustainable energy harvesting and storage solutions for IoT and other low−power applications.

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A novel MoP2@Ni2P nanosheet and an individual kelp-based porous carbon for assembly a unique high performance asymmetric supercapacitor

Cited by 8 publications

References 72 publications

Vanadate-based Fe-MOFs as promising negative electrode for hybrid supercapacitor device

Vanadate-based Fe-MOFs as promising negative electrode for hybrid supercapacitor device

Preparation of a High-Performance Asymmetric Supercapacitor by Recycling Aluminum Paper and Filter Components of Heated Tobacco

The Integration of Triboelectric Nanogenerators and Supercapacitors: The Key Role of Cellular Materials

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