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- 저자 : 즈엉 투 투이 (검색결과 1 건)
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즈엉 투 투이 강원대학교 대학원(삼척캠퍼스) 2026 국내박사
MXenes, a family of two-dimensional transition metal carbides and nitrides, exhibit exceptional electrical conductivity, high surface area, and versatile electrochemical properties, making them promising candidates for a wide range of applications, including energy storage, energy harvesting, sensing, catalysis, and electronic devices. However, their practical use is often limited by poor dispersibility in solvents, easily to oxidation, and weak adhesion to various substrates, which typically necessitate polymeric binders or conductive additives. In this thesis, amphiphilic alkoxysilane functionalization was developed to overcome these limitations. The surface-modified MXene exhibited stable dispersion across diverse solvents and strong adhesion on flexible substrates, enabling facile integration into complex device architectures. The modified MXene was demonstrated in three representative platforms: (i) as symmetric supercapacitor electrodes, achieving high capacitance and excellent cycling stability; (ii) as asymmetric microsupercapacitors fabricated via additive-free direct EHD printing; and (iii) in triboelectric nanogenerators (TENGs), where the well-dispersed MXene within a PVDF matrix promoted highly ordered β-phase crystallinity and enhanced charge trapping, thereby improving energy-harvesting efficiency. Overall, this thesis demonstrates a versatile interfacial engineering strategy for MXenes, addressing key limitations in dispersion, adhesion, and enabling the formulation of highly tunable MXene-based inks compatible with multiple printing and patterning techniques. This universal platform supports the development of next-generation energy-storage, biosensing, and energy- harvesting devices, offering both fundamental insights and practical design guidelines for diverse technological applications.
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