Journals / Hacettepe Journal of Biology and Chemistry / 2019 / Cilt: 47 - Sayı: 1

Electrochemical Performance of Fabricated Supercapacitors Using $MnO_2$ /Activated Carbon Electrodes

$MnO_2$ /Aktif Karbon Elektrotlar ile Üretilen Süperkapasitörlerin Elektrokimyasal Performans

Pages
115–122
Publication Date
2022-10-17
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Although the $MnO_2$ loading caused a decrease insurface area, the specific capacitance increased from 49 F/g to 68 F/g.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Peanut shells were subjected to pyrolysis and chemical activation to produce activated carbon with high specific surfacearea. $MnO_2$ particles were synthesized on the activated carbon surface.
📊
Key Findings & Data:Supercapacitors were fabricated by usingactivated carbon electrodes and tested by constant current charge-discharge, self-discharge, and life-cycle tests. $MnO_2$loading led to a significant decrease in specific surface area.
💡
Conclusion & Impact:Although the $MnO_2$ loading caused a decrease insurface area, the specific capacitance increased from 49 F/g to 68 F/g.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Peanut shells were subjected to pyrolysis and chemical activation to produce activated carbon with high specific surfacearea. $MnO_2$ particles were synthesized on the activated carbon surface. Supercapacitors were fabricated by usingactivated carbon electrodes and tested by constant current charge-discharge, self-discharge, and life-cycle tests. $MnO_2$loading led to a significant decrease in specific surface area. The pore volume distribution calculations revealed that the$MnO_2$ particles were in nanometer size. Because of the reduction of $MnO_4$- Ions to $MnO_2$ over the activated carbon surface,the amount of oxygen-containing surface functional groups, changed. Although the $MnO_2$ loading caused a decrease insurface area, the specific capacitance increased from 49 F/g to 68 F/g.

Özet

Fıstık kabuklarından piroliz ve kimyasal aktivasyon teknikleri kullanılarak yüksek yüzey alanına sahip aktif karbon üretilerek, bu aktif karbonun yüzeyinde $MnO_2$sentezlendi. Aktif karbonlar elektrot olarak kullanılarak süperkapasitörler fabrike edildi ve sabit akım şarj-deşarj, kendiliğinden boşalma ve çevrim ömrü testleri gerçekleştirildi. $MnO_2$yüklemesi yüzey alanında azalmaya yol açmıştır. Gözenek hacim dağılımı hesaplamaları sentezlenen $MnO_2$parçacıklarının nanometre boyutunda olduğunu göstermiştir. $MnO_4$ -iyonlarının aktif karbon yüzeyinde $MnO_2$ ’ye yükseltgenmesi nedeni ile yüzeyde oksijen içeren fonksiyonlu grupların sayısında değişim olmuştur. $MnO_2$yüklemesi yüzey alanı düşüşüne sebep olmasına rağmen, spesifik kapasitansın 49 F/g’dan 68 F/g’a çıkmasına yol açmıştır.

🔖

Cite This Article

YUMAK, T. (2022). Electrochemical Performance of Fabricated Supercapacitors Using $MnO_2$ /Activated Carbon Electrodes. Hacettepe Journal of Biology and Chemistry, Cilt: 47 - Sayı: 1, 115–122. https://ajindex.com/articles/529037

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (15)

  1. E. Bayram, Electrosoption of aromatic organic acids from aqueous solutions onto granular activated carbon electrodes for water purification, Hacettepe J. Biol. Chem., 3 (2016) 273-273
  2. C. Haktanır, Removal of heavy metals from aqueus solution using activated carbon embedded cryogels, Hacettepe J. Biol. Chem., 1 (2017) 135-142
  3. S. Baş, Ö. Hakli, A.G. Dumanli, Y. Yürüm, PAN-based pd-doped activated carbon fibers for hydrogen storage: preparation, a new method for chemical activation and characterization of fibers, Hacettepe J. Biol. Chem. 36 (2008) 247-253
  4. H. Jüntgen, Activated carbon as catalyst support, Fuel, 65 (1986) 1436–1446
  5. R.W. Pekala, J.C. Farmer, C.T. Alviso, T.D. Tran, S.T. Mayer, J.M. Miller, B. Dunn, Carbon aerogels for electrochemical applications, J. Non. Cryst. Solids., 225 (1998) 74-80
  6. E. Frackowiak, Carbon materials for supercapacitor application., Phys. Chem. Chem. Phys., 9 (2007) 1774-785
  7. L.L. Zhang, X.S. Zhao, Carbon-based materials as supercapacitor electrodes, J. Mater. Chem. 38 (2009) 2520- 2531
  8. G. Wang, L. Zhang, J. Zhang, A review of electrode materials for electrochemical supercapacitors, Chem. Soc. Rev. Chem. Soc. Rev., 41 (2012) 797-828
  9. S. Bose, T. Kuila, A.K. Mishra, R. Rajasekar, N.H. Kim, J.H. Lee, Carbon-based nanostructured materials and their composites as supercapacitor electrodes, J. Mater. Chem., 22 (2012) 767
  10. P.T. Williams, A.R. Reed, Development of activated carbon pore structure via physical and chemical activation of biomass fibre waste, Biomass and Bioenergy., 30 (2006) 144–152
  11. M.J. Prauchner, F. Rodríguez-Reinoso, Chemical versus physical activation of coconut shell: A comparative study, Microporous Mesoporous Mater., 152 (2012) 163-171
  12. M.Y. Ho, P.S. Khiew, D. Isa, T.K. Tan, a Review of metal oxide composite electrode materials for electrochemical capacitors, J. World Sci., 9 (2014) 1-25
  13. D. Deng, B.-S. Kim, M. Gopiraman, I.S. Kim, Needle-like MnO2 / activated carbon nanocomposites derived from human hair as versatile electrode materials for supercapacitors, RSC Adv., 5 (2015) 81492-81498
  14. T. Yumak, D. Bragg, E.M. Sabolsky, Effect of synthesis methods on the surface and electrochemical characteristics of metal oxide/activated carbon composites for supercapacitor applications, Appl. Surf. Sci. 469 (2019) 983-993
  15. M.D. Stoller, R.S. Ruoff, Best practice methods for determining an electrode material’s performance for ultracapacitors, Energy Environ. Sci., 3