Preparation and properties of PAN/MXene coaxial fiber electrode
A series of coaxial fiber electrode samples with different sheath and core component were prepared through wet-spinning method combined with subsequent high temperature carbonization.Single-layer MXene sheets,polymethyl methacrylate(PMMA)and polyacrylonitrile(PAN)were applied in this study for making various spinning solution.The influence of different material constitution of the sheath and core layer on the property of as-prepared fiber electrodes,including microstructure,mechanical strength,electrical conductivity and electrochemical performance,was discussed and analyzed.The results showed that the fiber electrode sample with PAN/MXene sheath layer and PAN/PMMA core layer could achieve balance between the electrochemical performance and mechanical strength.The tensile breaking strength,specific conductance and specific capacitance reached 14.4MPa,322.7S/m and 113.18F/g,respectively.In addition,the fiber electrode also had good cycle stability with capacitance retention rate at 95.7%after 1000 GCD cycles.
fiber electrodeMXenecoaxial fiberwet-spinningelectrochemical energy storage
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