Enhancing the performance of supercapacitor electrode from chemical activation of carbon nanofibers derived Areca catech

  • PDF / 1,624,858 Bytes
  • 12 Pages / 595.276 x 790.866 pts Page_size
  • 98 Downloads / 302 Views

DOWNLOAD

REPORT


Carbon Letters https://doi.org/10.1007/s42823-020-00191-5

ORIGINAL ARTICLE

Enhancing the performance of supercapacitor electrode from chemical activation of carbon nanofibers derived Areca catechu husk via one‑stage integrated pyrolysis Erman Taer1   · Friska Febriyanti1 · Widya Sinta Mustika1 · Rika Taslim2 · Agustino Agustino1 · Apriwandi Apriwandi1 Received: 4 June 2020 / Revised: 24 August 2020 / Accepted: 19 September 2020 © Korean Carbon Society 2020

Abstract A carbon nanofiber was produced from the Areca catechu husk as a supercapacitor electrode, utilizing a chemical activation of potassium hydroxide (KOH) at different concentrations. One-stage integrated pyrolysis both carbonization and physical activation were employed for directly converting biomass to activated carbon nanofiber. The morphology structure, specific surface area, pore structure characteristic, crystallinity, and surface compound were characterized to evaluate the influence on electrochemical performance. The electrochemical performance of the supercapacitor was measured using cyclic voltammetry (CV) through a symmetrical system in 1 M ­H2SO4. The results show that the KOH-assisted or absence activation converts activated carbon from aggregate into a unique structure of nanofiber. The optimized carbon nanofiber showed the large specific surface area of 838.64 m2 g−1 with the total pore volume of 0.448 cm3 g−1, for enhancing electrochemical performance. Beneficial form its unique structural advantages, the optimized carbon nanofiber exhibits high electrochemical performance, including a specific capacitance of 181.96 F g−1 and maximum energy density of 25.27 Wh kg−1 for the power density of 91.07 W kg−1. This study examines a facile conventional route for producing carbon nanofiber from biomass Areca catechu husk in economical and efficient for electrode supercapacitor. Keywords  Activated carbon · Areca catechu husk · Carbon nanofiber · Chemically activation · Supercapacitor

1 Introduction Energy storage has been extensively studied due to the increasing energy consumption in recent years. This has been contributed by the rapid advancements in technology and the digital era, which have necessitated research on high power and energy density, as well as portable device packaging [1]. Additionally, fossil energy needs to be replaced due to depletion sources and their emission [2]. Environmentally friendly and sustainable source for electrical energy storage, such as supercapacitor, can be a solution to these issues. The supercapacitor has high power and energy density, rapid * Erman Taer [email protected] 1



Department of Physics, University of Riau, Simpang Baru, 28293 Riau, Indonesia



Department of Industrial Engineering, State Islamic University of Sultan Syarif Kasim, Simpang Baru, 28293 Riau, Indonesia

2

charging-discharging, long lifetimes, safety, and excellent energy performance [3]. There are two types of supercapacitors based on the ions storage mechanism [4]. First, there is the electrochemical double-layer capacitanc

Data Loading...