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<p>The advancement of biocompatible energy storing technology remains essential intended for supplying fueling to medical implanted devices. Spinach (Spinacia oleracea), waste was cast-off as a biomass precursor to produce valuable activated carbon (SPAC). The SPAC is having specific surface area 1748 and 1840 m<sup>2</sup> g<sup>− 1</sup> and total pore volume 0.80 and 0.82 cm<sup>3</sup> g<sup>− 1</sup> was effectively attained at 800&#xa0;°C &amp; 900&#xa0;°C for 1&#xa0;h. Based on pore size distribution both the materials are having microporous in nature and it also evidenced by Scanning Electron Microscope (SEM). The X-ray photoelectron spectroscopy (XPS) is clearly revealed that it contains most abundant of carbon and oxygen compared to nitrogen due to it contains nearly 4% of carbohydrates and 3% protein and also it contains iron and calcium moderately but it not detected by in XPS. The fabricated SPAC is studied for supercapacitor application is showed very good specific capacitance is 254&#xa0;F g<sup>− 1</sup> and 157&#xa0;F g<sup>− 1</sup> at 1 Ag<sup>− 1</sup>. The SPAC@900°C gives high specific capacitance owing to good surface area and pore volume.</p>

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Spinach-waste-derived activated carbon for supercapacitor application

  • 期刊论文

  • 发表日期：

    2026年1月13日

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  • Reddi Mohan Naidu Kallaa,
  • Rajesh Cheruku,
  • Sivarama Krishna Lakkaboyana,
  • Sreedhar Doraswamy,
  • Nadavala Siva Kumar,
  • Jaewoong Lee

摘要

The advancement of biocompatible energy storing technology remains essential intended for supplying fueling to medical implanted devices. Spinach (Spinacia oleracea), waste was cast-off as a biomass precursor to produce valuable activated carbon (SPAC). The SPAC is having specific surface area 1748 and 1840 m2 g− 1 and total pore volume 0.80 and 0.82 cm3 g− 1 was effectively attained at 800 °C & 900 °C for 1 h. Based on pore size distribution both the materials are having microporous in nature and it also evidenced by Scanning Electron Microscope (SEM). The X-ray photoelectron spectroscopy (XPS) is clearly revealed that it contains most abundant of carbon and oxygen compared to nitrogen due to it contains nearly 4% of carbohydrates and 3% protein and also it contains iron and calcium moderately but it not detected by in XPS. The fabricated SPAC is studied for supercapacitor application is showed very good specific capacitance is 254 F g− 1 and 157 F g− 1 at 1 Ag− 1. The SPAC@900°C gives high specific capacitance owing to good surface area and pore volume.