Printable graphene inks with polypropylene carbonate for low-surface-tension solvents and mild-temperature post-processing

被引：0

作者：

He, Huihui ^{[1
,2
]}

Du, Jian ^{[1
]}

Li, Jiaming ^{[1
]}

Gu, Yuxing ^{[1
,2
]}

Koren, Elad ^{[2
]}

Hyun, Woo Jin ^{[1
,2
,3
]}

机构：

[1] Guangdong Technion Israel Inst Technol, Dept Mat Sci & Engn, Shantou, Guangdong, Peoples R China

[2] Technion Israel Inst Technol, Dept Mat Sci & Engn, Haifa, Israel

[3] Guangdong Technion Israel Inst Technol, Guangdong Prov Key Lab Mat & Technol Energy Conver, Shantou, Guangdong, Peoples R China

来源：

COMMUNICATIONS MATERIALS | 2025年 / 6卷 / 01期

基金：

中国国家自然科学基金;

关键词：

HIGH-RESOLUTION; EXFOLIATION; TRANSPARENT; NONCOVALENT; GRAPHITE; FIELD;

D O I：

10.1038/s43246-025-00753-y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

For dispersion stability, printable graphene inks commonly employ solvents with limited surface tensions or incorporate dispersant aids that require high-temperature post-processing, restricting printability and substrate compatibility. Here, printable graphene inks are introduced with low-surface-tension solvents and mild-temperature post-processing using polypropylene carbonate (PPC). Graphene is produced by liquid-phase exfoliation with PPC, and the exfoliated graphene/PPC is used to generate printable inks. As a dispersant aid, PPC improves graphene exfoliation, dispersion stability, and redispersability in solvents with low surface tensions (<30 mJ m(-2)), facilitating the formulation of desirable inks for efficient aerosol jet printing on diverse substrates. Moreover, the low decomposition temperature of PPC eases its thermal removal from printed graphene, allowing high electrical conductivity with a mild post-processing temperature of 220 degrees C. Consequently, the graphene inks enable the fabrication of fully-printed graphene micro-supercapacitors on heat-sensitive paper substrates, exhibiting high areal capacitances, cycling stability, and mechanical resilience against bending deformation.

引用

页数：9