Effects of concentrated CO2 on the performance of a PBI/H3PO4 high temperature proton exchange membrane fuel cell

Journal of Power Sources, Год журнала: 2024, Номер 614, С. 235053 - 235053

Опубликована: Июль 17, 2024

Язык: Английский

The Use of Cognate Cosolvent to Mediate Localized High-Concentration Electrolytes for High-Voltage and Long-Cycling Lithium-Metal Batteries

Batteries, Год журнала: 2025, Номер 11(4), С. 156 - 156

Опубликована: Апрель 15, 2025

Localized high-concentration electrolytes (LHCEs) are promising systems for improving the high-voltage performance and interfacial stability of lithium-metal batteries (LMBs). Unfortunately, they always challenged by liquid–liquid phase separation during solution preparation. Further investigation is required when prepared electrolyte has encountered previously. Here, we propose a “cognate cosolvent” strategy to mediate phase-separated LiBF4/fluoroethylene carbonate (FEC)|ethyl trifluoroacetate (TFAE) mixtures with ethyl acetate (EA), forming effective LiBF4/FEC/EA/TFAE-based LHCEs (B-LHCEs). Because their unique solvation structure, B-LHCEs exhibit high oxidative stability, facilitating Li+ transport. The optimized help single-crystal LiMn0.8Mn0.1Co0.1O2/Li form robust interphases, stability. As result, distinct can be obtained (4.5 V, 500 cycles, ~90%, 1400, ~70%; 25 C, 128 mAh g−1, 4.7 500, 82.5%). This work turns “impossible” into an “effective” design, transcending previous paradigms enriching LHCE preparation research.

Язык: Английский

Pt/CeO2 Cocatalyst and porogen enhance performance of high-temperature proton exchange membrane fuel cells

Journal of Power Sources, Год журнала: 2024, Номер 629, С. 235996 - 235996

Опубликована: Дек. 5, 2024

Язык: Английский