Graphene Oxide-Doped Polycarbonate Track-Etched Membranes Grafted with Poly(acrylic acid) as Gel Polymer Electrolytes for All-Solid-State Supercapacitors
Batteries, cilt.12, sa.9, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 12 Sayı: 9
- Basım Tarihi: 2026
- Doi Numarası: 10.3390/batteries12090376
- Dergi Adı: Batteries
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Applied Science & Technology Source, Compendex, INSPEC, Directory of Open Access Journals, Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest)
- Anahtar Kelimeler: all-solid-state supercapacitor, gel polymer electrolyte, graphene oxide, ionic conductivity, poly(acrylic acid), RAFT grafting, track-etched membranes
- Hacettepe Üniversitesi Adresli: Evet
Özet
Track-etched polycarbonate membranes (PC-TeMs) offer a structurally supported and well-defined nanoporous architecture, but their intrinsically low ionic conductivity limits their direct application as solid-state electrolytes in supercapacitors. Here, we grafted poly(acrylic acid) (PAA) into the cylindrical nanopores of PC-TeMs via reversible addition–fragmentation chain-transfer (RAFT) polymerization, incorporating graphene oxide (GO) at 0–1 wt% to enhance ion transport and structural stability. Structural, spectroscopic, and morphological analyses indicated effective PAA grafting along the nanochannels and homogeneous GO dispersion within the membrane matrix. Electrochemical tests revealed a non-linear dependence of performance on GO content: an optimal GO content of 0.5 wt% with PAA grafting delivered the highest ionic conductivity (0.57 mS·cm−1) and specific capacitance (1.14 F·g−1 at 5 mV·s−1). This corresponds to improvements of approximately ~6× and ~800× compared to the ungrafted GO-free membrane (0.09 mS·cm−1 and 1.42 mF·g−1), and ~3× and ~42× compared to the ungrafted GO-containing membrane (0.18 mS·cm−1 and 26.96 mF·g−1), respectively. In contrast, at a GO content of 1 wt%, pore blockage and a decline in performance were observed. These results demonstrate that finely tuned GO incorporation into RAFT-grafted PAA/PC-TeMs enables dimensionally stable solid-state electrolytes for high-performance solid-state supercapacitors.