ELECTROSPINNING OF POROUS MANGANESE OXIDE-BASED CARBON NANOFIBERS AS BINDER-FREE CATHODE IN ZINC ION BATTERIES
Zinc-ion batteries present a promising, low-cost, and inherently safer alternative to lithium-ion batteries for energy storage applications. However, their performance is currently hindered by the substantial weight contribution of binding agents and high-density current collectors employed in conve...
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| Format: | Final Project |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/84383 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Zinc-ion batteries present a promising, low-cost, and inherently safer alternative to lithium-ion batteries for energy storage applications. However, their performance is currently hindered by the substantial weight contribution of binding agents and high-density current collectors employed in conventional cathode architectures. To address this limitation, binder-free cathode designs have emerged as potential performance enhancers.
Carbon nanofibers, synthesized via electrospinning, offer a suitable platform for developing binder-free cathodes due to their favorable chemical stability and conductivity. While research has primarily focused on vanadium-based materials for such cathodes, manganese-based oxides, characterized by high theoretical capacity (MnO2 = 308 mA h g-1), environmental benignity, and low cost, represent an attractive alternative.
This study successfully synthesized a porous carbon nanofiber-manganese oxide composite (MnxOy@PCNF) using electrospinning. The resulting material exhibited excellent structural integrity with homogeneously dispersed manganese oxide nanoparticles on porous carbon nanofibers possessing diameters of 300 – 400 nm. A comparative analysis of MnxOy@PCNF cathodes with and without manganese oxide incorporation was conducted. The MnxOy@PCNF-1 cathode demonstrated superior electrochemical performance, exhibiting exceptional stability at elevated current densities, specifically 1 A g-1. Furthermore, this cathode maintained a specific capacity of 234 mA h g-1 with a coulombic efficiency of 99% after 270 cycles. These results collectively indicate the promising potential of electrospun MnxOy@PCNF as a high-performance cathode material for zinc-ion batteries. |
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