Preparation of CF/MnxMoS2-CNF-based nano-cored-yarn solid-state supercapacitor (NYC) and the energy storage mechanism (IMAGE)
Caption
1T/2H phase manganese-doped molybdenum disulfide (MoS₂) was synthesized via a one-step hydrothermal method, optimizing the doping ratio and lattice distortion induced by cationic point defects, which effectively expanded the interlayer spacing and mitigated the harmful and challenging conditions typically required for synthesizing the 1T phase. Subsequently, nano-fiber core-spun yarn-like electrodes were fabricated through conjugated electrospinning technology, using activated carbon fibers as the core layer and CF/MnₓMoS₂-CNF nanofibers as the shell layer, followed by twisting, winding, and carbonization. Benefiting from the unique structural design and effective defect regulation, the decomposition of the aqueous electrolyte at high operating voltages was suppressed, enabling the assembled nano-fiber core-spun yarn supercapacitors (NYCs) to exhibit stable and excellent electrochemical performance at an output voltage of 1.6 V.
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Nano Research, Tsinghua University Press
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