Study on the applicability of pressurized physically activated carbon as an adsorbent in adsorption heat pumps

Yi, Hyeonseok; Nakabayashi, Koji; Yoon, Seong‐Ho; Miyawaki, Jin

doi:10.1039/d1ra08395c

Cited by 7 publications

(3 citation statements)

References 21 publications

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“…The global climate anomalies and cumulative depletion of nonrenewable energy sources have encouraged the fast growth of sustainable energy sources, pushing forward a crucial need for smart and productive devices for energy storage. − The two biggest and commonly used electrochemical devices for energy storage are supercapacitors and batteries. Supercapacitors (SCs) differ from batteries because of their fast charging, high power density, and discharging rate capabilities.…”

Section: Introductionmentioning

confidence: 99%

“…Carbon and carbon-based electrodes have gained widespread applications in various energy storage systems because they are low-cost and own thermochemical stability, processability, structural tenability, and textural characteristics to achieve the necessities of the particular applications. The design of the hierarchical porous materials creates larger effective specific surface areas, which attains the fast ion transportation. − In the past two decades, biomass-based ACs have attained tremendous consideration due to their abundant feedstocks, low cost, and porosity and they promote added value to bio-waste. , Several bio-wastes such as tea leaf residues, , nutshells, , vegetable wastes, , coconut shells, , and apricot shells have been employed as precursor materials to obtain activated carbon (AC). Moreover, the presence of various organic functional groups provide thermal stability to their skeleton, which make them more promising .…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Preparation and Characterization of Physically Activated Carbon and Its Energetic Application for All-Solid-State Supercapacitors: A Case Study

et al. 2023

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Biomass-derived activated carbons have gained significant attention as electrode materials for supercapacitors (SCs) due to their renewability, low-cost, and ready availability. In this work, we have derived physically activated carbon from date seed biomass as symmetric electrodes and PVA/KOH has been used as a gel polymer electrolyte for all-solid-state SCs. Initially, the date seed biomass was carbonized at 600 °C (C-600) and then it was used to obtain physically activated carbon through CO 2 activation at 850 °C (C-850). The SEM and TEM images of C-850 displayed its porous, flaky, and multilayer type morphologies. The fabricated electrodes from C-850 with PVA/KOH electrolytes showed the best electrochemical performances in SCs (Lu et al. Energy Environ. Sci., 2014, 7, 2160 application. Cyclic voltammetry was performed from 5 to 100 mV s −1 , illustrating an electric double layer behavior. The C-850 electrode delivered a specific capacitance of 138.12 F g −1 at 5 mV s −1 , whereas it retained 16 F g −1 capacitance at 100 mV s −1 . Our assembled all-solid-state SCs exhibit an energy density of 9.6 Wh kg −1 with a power density of 87.86 W kg −1 . The internal and charge transfer resistances of the assembled SCs were 0.54 and 17.86 Ω, respectively. These innovative findings provide a universal and KOH-free activation process for the synthesis of physically activated carbon for all solid-state SCs applications.

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