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• W4313479191 abstract "Herein, we propose a strategy to overcome the oxidative durability dilemma and conductivity associated setbacks in pristine sulfonated poly (ether ether ketone) (s-PEEK) polyelectrolyte via. electrostatic and physicochemical synergy induced self-assembly performing solution-phase intercalation of hydrophilic ceria-manganese bimetal oxide (CeMnOx) nanocomposite. The CeMnOx was synthesised adopting facile alkali assisted decomposition precipitation method with hydroxyl abundant surface and successive influence of CeMnOx on CeMnOx@s-PEEK over s-PEEK was studied. Studies shows that, at higher CeMnOx loads the oxidative stability improves dramatically attributed to radical oxidative specie scavenging at bimetal oxide nanoreactor centre. Furthermore, the SPM-x exhibits high proton conductivities in range up to ⁓4.0 × 10−2 S cm−1 at 90 °C in contrast to s-PEEK (⁓3.2 × 10−2 S cm−1). The Arrhenius studies revealed lowering of activation energy barrier (Ea) for H+ conduction by ∼30% for SPM-2.0 membranes with 2.0 wt% loads. During PEMFC evaluation, the optimized SPM-2.0 and SPM-4.0 exhibited peak power density of ⁓88.0 mW cm−2 and ⁓60.0 mW cm−2 at a limiting current density of 146.5 mA cm−2 and ⁓121.0 mA cm−2, respectively which are ⁓33.0% better than pristine s-PEEK. These paradigms shows that, ceria-manganese bi-metal oxide intercalated s-PEEK are promising nanocomposite polyelectrolyte to impart mechano-oxidative reinforcement and domain concentration attributes for improving overall performance of polyelectrolytes in proton exchange membrane fuel cell (PEMFC)." @default.
• W4313479191 created "2023-01-06" @default.
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• W4313479191 date "2023-04-01" @default.
• W4313479191 modified "2023-09-27" @default.
• W4313479191 title "Hydrophilic tailoring of s-PEEK polyelectrolyte with CeMnOx bimetal oxide to sustain oxidative dilemma and improve PEMFC performance" @default.
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• W4313479191 doi "https://doi.org/10.1016/j.ijhydene.2022.12.132" @default.
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