Journal article
Influence of MXene Composition on Triboelectricity of MXene-Alginate Nanocomposites
ACS applied materials & interfaces
29 Apr 2024
PMID: 38684057
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
MXenes are highly versatile and conductive 2D materials that can significantly enhance the triboelectric properties of polymer nanocomposites. Despite the growing interest in the tunable chemistry of MXenes for energy applications, the effect of their chemical composition on triboelectric power generation has yet to be thoroughly studied. Here, we investigate the impact of the chemical composition of MXenes, specifically the Ti
CNT
carbonitride vs the most studied carbide, Ti
C
T
, on their interactions with sodium alginate biopolymer and, ultimately, the performance of a triboelectric nanogenerator (TENG) device. Our results show that adding 2 wt % of Ti
CNT
to alginate produces a synergistic effect that generates a higher triboelectric output than the Ti
C
T
system. Spectroscopic analyses suggest that a higher oxygen and fluorine content on the surface of Ti
CNT
enhances hydrogen bonding with the alginate matrix, thereby increasing the surface charge density of the alginate oxygen atoms. This was further supported by Kelvin probe force microscopy, which revealed a more negative surface potential on Ti
CNT
-alginate, facilitating high charge transfer between the TENG electrodes. The optimized Ti
CNT
-alginate nanogenerator delivered an output of 670 V, 15 μA, and 0.28 W/m
. Additionally, we demonstrate that plasma oxidation of the MXene surface further enhances triboelectric performance. Due to the diverse surface terminations of MXene, we show that Ti
CNT
-alginate can function as either tribopositive or tribonegative material, depending on the counter-contacting material. Our findings provide a deeper understanding of how MXene composition affects their interaction with biopolymers and resulting tunable triboelectrification behavior. This opens up new avenues for developing flexible and efficient MXene-based TENG devices.
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Details
- Title
- Influence of MXene Composition on Triboelectricity of MXene-Alginate Nanocomposites
- Creators
- Bernd Wicklein - Korea Advanced Institute of Science and TechnologyGeetha Valurouthu - Drexel UniversityHongYeon Yoon - Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of KoreaHyunjoon Yoo - Korea Advanced Institute of Science and TechnologySathiyanathan Ponnan - Korea Advanced Institute of Science and TechnologyManmatha Mahato - Korea Advanced Institute of Science and TechnologyJiseok Kim - Korea Advanced Institute of Science and TechnologySyed Sheraz Ali - Korea Advanced Institute of Science and TechnologyJeong Young Park - Korea Advanced Institute of Science and TechnologyYury Gogotsi - Drexel UniversityIl-Kwon Oh - Creative Research
- Publication Details
- ACS applied materials & interfaces
- Publisher
- American Chemical Society (ACS)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:001227751900001
- Scopus ID
- 2-s2.0-85192138934
- Other Identifier
- 991021874009004721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology