Tailoring MXene/nickel cobalt phosphate composite for enhanced electrochromic and supercapacitor applications
Electrochromic materials that simultaneously enable optical modulation and charge storage offer a promising route toward multifunctional energy systems. Herein, we report a scalable synthesis of a nickel cobalt phosphate–MXene (NCP/Ti3C2) composite engineered to couple fast ion transport with struct...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | en |
| Published: |
John Wiley and Sons
2025
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| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/122403/1/122403.pdf http://psasir.upm.edu.my/id/eprint/122403/ https://onlinelibrary.wiley.com/doi/10.1002/bte2.70070 |
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| Summary: | Electrochromic materials that simultaneously enable optical modulation and charge storage offer a promising route toward multifunctional energy systems. Herein, we report a scalable synthesis of a nickel cobalt phosphate–MXene (NCP/Ti3C2) composite engineered to couple fast ion transport with structural robustness. Using microwave-assisted deposition followed by spin coating, we constructed a conductive Ti3C2 network that intimately overlays the NCP matrix, forming an architecture that overcomes the transport limitations and instability typically observed in MXene–phosphate hybrids. The optimized NCP/Ti3C2 film delivered a high coloration efficiency (~140 cm2/C) and retained over 75% of its optical contrast after 1000 switching cycles. It further exhibits an exceptional specific capacitance (~2300 F/g at 1 mV/s), reflecting markedly enhanced charge-storage kinetics. Assembled into an asymmetric electrochromic supercapacitor with activated carbon, the device achieved an energy density of ~15 Wh/kg at a power density of ~1600 W/kg and maintained ~85% capacitance retention over 5000 cycles. These combined optical and electrochemical performances position the NCP/Ti3C2//AC system as a compelling platform for next-generation wearable and multifunctional energy-storage technologies. |
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