Electrolyte-Driven Behavior of Symmetric Supercabatteries Based on CuS/CoS/Bi<sub>2</sub>S<sub>3</sub> Metal-Sulfur Biomolecule Hybrids

Yetiman S., KILIÇ DOKAN F., ÖNSES M. S., Sahmetlioglu E.

ACS APPLIED ENERGY MATERIALS, cilt.8, sa.16, ss.11896-11909, 2025 (SCI-Expanded, Scopus)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 8 Sayı: 16
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1021/acsaem.5c01020
  • Dergi Adı: ACS APPLIED ENERGY MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, Compendex
  • Sayfa Sayıları: ss.11896-11909
  • Kayseri Üniversitesi Adresli: Evet

Özet

Supercabatteries (SCB) are emerging as the ideal energy storage solution for applications requiring high power and energy output. This study offers an efficient approach for synthesizing a ternary multifunctional SCB electrode material composed of CuS, CoS, and Bi2S3. Biomolecular l-cysteine (L) and thiourea (T) were utilized as sulfide sources to improve the electrochemical efficiency of the electrodes. The l-cysteine increased the specific surface area (SSA) of CuS by similar to 1.5-fold, that of CoS by similar to 9-fold, and that of Bi2S3 by similar to 1.2-fold. The best-performing CuS@CoS@Bi2S3 hybrid electrode was utilized in the construction of symmetric SCB devices operating at a voltage of up to 1.65 V. The use of an electrolyte doped with a redox additive potassium ferrocyanide [K-4[Fe(CN)(6)]] was key in obtaining superior electrochemical performance leading to an energy density of 128 Wh kg(-1) and a power density of 50.000 W kg(-1) with considerable enhancements in the cycle durability.