Tuning the solvation structure of zinc ions via urea enables long-cycling alkaline zinc‑manganese flow batteries

Guo L., Sun R., Adam A. M. M., Leng S., Qu M., KAYA S., ...Daha Fazla

Journal of Electroanalytical Chemistry, cilt.995, 2025 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 995
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1016/j.jelechem.2025.119335
  • Dergi Adı: Journal of Electroanalytical Chemistry
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, Chimica, Compendex, INSPEC
  • Anahtar Kelimeler: Anolyte additive, Solvation structure, Urea, Zinc dendrites, Zn[sbnd]Mn flow battery
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

This work proposes a novel strategy utilizing urea as a bifunctional anolyte additive for zinc‑manganese (Zn[sbnd]Mn) flow batteries to regulate dead zinc formation and mitigate dendrite growth. Urea reduces the rate of zinc deposition, facilitating a uniform three-dimensional deposition and offering effective protection against alkaline corrosion of zinc via surface adsorption. The results demonstrate that incorporating 0.1 M urea into the anolyte solution of alkaline Zn[sbnd]Mn flow batteries extends the cycling time to 70 h under a current density of 60 mA cm−2, with an average coulombic efficiency (CE) of 97.1 % and an energy efficiency (EE) of 82.6 %. The results provide a promising and valuable approach to addressing the issue of zinc dendrites while also introducing an economical, sustainable, and highly reliable electrolyte alternative for Zn[sbnd]Mn flow batteries.