Macro-assembled Graphene Materials

Datum

28.05.2026

Zeit

13:00 - 15:00

Sprecher

Chao Gao

Zugehörigkeit

Department of Polymer Science and Engineering, Zhejiang University

Serie

TUD nanoSeminar

Sprache

en

Hauptthema

Materialien

Andere Themen

Materialien

Host

Arezoo Dianat

Beschreibung

Graphene is renowned as the "King of New Materials" due to its exceptional mechanical, electrical, optical, and thermal properties, along with immense application potential, making it a strategic frontier material. Our team used graphene oxide as a representative research model of two-dimensional macromolecules and conducted systematic studies on graphene oxide liquid crystals and macroscopic assembly materials through strategies such as wet assembly, chemical reduction, and high-temperature reduction. 
 In 2011, our team pioneered a wet-spinning assembly strategy for graphene oxide liquid crystals, producing meter-long continuous graphene fibers for the first time, thereby opening a new preparation route "graphite to graphene to carbon fibers". We also proposed a defect-engineering strategy to comprehensively control structural defects in graphene fibers from the molecular to macroscopic scale. Based on the "defect-free design principle", our team successfully fabricated macroscopic highly thermal conductive graphene films using ultra-large, debris-free graphene oxide sheets with low edge defects as assembly units. 
 Additionally, our team developed a hydroplastic foaming method for the continuous preparation of graphene aerogels under ambient temperature and pressure, effectively overcoming fundamental challenges in traditional methods, such as complex drying processes, difficulties in structural control, and excessive junction defects. By deeply investigating the structure-property relationship of defects, our team provided new insights into the controllable preparation of high-performance macroscopic graphene materials.
 References:
 [1] Li P., Wang Z., Cai G.#, Zhao Y., Deng Z., Wang B., Li Z., Ming X., Gao W., Xu Z.*, Xu Z.*, Liu Y.*, Gao C.*. Nature Materials, 2025, DOI : 10.1038/s41563-025-02384-7. 
 [2] Li P., Wang Z., Qi Y., Cai G., Zhao Y., Ming X., Lin Z., Ma W., Lin J., Li H., Shen K., Liu Y.*, Xu Z.*, Xu Z.*, Gao C.*. Nat. Commun. 2024, 15, 409.
 [3] Pang K., Xia Y., Liu X., Tong W., Li X., Li C., Zhao W., Chen Y., Qin H., Fang W., Peng L., Liu Y., Gao W., Xu Z.*, Liu Y.*, Gao C.*. Dome-celled aerogels with ultrahigh-temperature superelasticity over 2273 K. Science, 2025, 389, 6757, 290.
 [4] Xia Y., Qin H., Tong W., Qi Y., Li K., Liu Y., Xu Z., Liu Y., Pang K.*, Gao C.*, Gao W.*. Adv. Mater. 2024, 2417462.
 [5] Chang D., Liu J., Fang B., Xu Z., Li Z.*, Liu Y.*, Brassart L., Guo F., Gao W., Gao C.*. Science 2021, 372, 614.
 [6] Sun H., Xu Z., Gao C.*. Adv. Mater. 2013, 25, 2554.
 [7] Xu Z., Gao C.*. ACS Nano 2011, 5, 2908.

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Letztmalig verändert: 15.03.2026, 06:08:24