首页|Sustainable liquid metal-induced conductive nacre

Sustainable liquid metal-induced conductive nacre

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Nacre has inspired research to fabricate tough bulk composites for practical applications using inorganic nanomaterials as building blocks.However,with the considerable pressure to reduce global carbon emis-sions,preparing nacre-inspired composites remains a significant challenge using more economical and environmentally friendly building blocks.Here we demonstrate tough and conductive nacre by assem-bling aragonite platelets exfoliated from natural nacre,with liquid metal and sodium alginate used as the"mortar".The formation of Ga-O-C coordination bonding between the gallium ions and sodium algi-nate molecules reduces the voids and improves compactness.The resultant conductive nacre exhibits much higher mechanical properties than natural nacre.It also shows excellent impact resistance attrib-uted to the synergistic strengthening and toughening fracture mechanisms induced by liquid metal and sodium alginate.Furthermore,our conductive nacre exhibits exceptional self-monitoring sensitivity for maintaining structural integrity.The proposed strategy provides a novel avenue for turning natural nacre into a valuable green composite.

Aragonite plateletLiquid metalMechanical propertiesSelf-monitoringSustainable

Jia Yan、Tianzhu Zhou、Jingsong Peng、Huagao Wang、Lei Jiang、Qunfeng Cheng

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School of Chemistry,Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education,Beihang University,Beijing 100191,China

School of Chemistry and Materials Science,University of Science and Technology of China,Hefei 230026,China

Suzhou Institute for Advanced Research,University of Science and Technology of China,Suzhou 215123,China

Key Laboratory of Bio-inspired Materials and Interfacial Science,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beiji

Institute of Energy Materials Science(IEMS),University of Shanghai for Science and Technology,Shanghai 200093,China

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National Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Science Fund for Distinguished Young Scholars111 ProjectHigh Performance Computing Platform at Beihang University,China for data processing

2021YFA0715700220750095235001252125302B14009

2024

10.1016/j.scib.2024.01.033

科学通报(英文版)
中国科学院

科学通报(英文版)

CSTPCD
ISSN：1001-6538
年,卷(期)：2024.69(7)
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