Carbon Nanotubes with Carbon Blacks as Cofillers to Improve Conductivity and Stability

Cao, Ge1,2; Hao, Changxiang1,2; Gao, Xiaolan2; Lu, Junyi2; Xue, Wei1,2; Meng, Yuan2; Cheng, Chun2; Tian, Yanqing2

2019-02

10.1021/acsomega.8b03684

ACS Omega   影响因子和分区

2470-1343

In this study, a simple solution-mixing method is used to develop a kind of excellent flexible, electrically conductive adhesives (ECAs). Carbon nanotubes (CNTs) and carbon blacks (CBs) as cofillers were added into Ag-based pastes. The use of the two fillers is due to the consideration that these two materials may provide positive synergistic effects for improving the conductivity of ECAs. The conductivity, flexibility, cyclability, and oxidation resistance of ECAs with different contents of carbon fillers were studied. It was found that a small amount of CNTs or CBs can dramatically improve the ECAs' conductivity. Solution-mixing method brings excellent carbon nanofiller dispersion in polymer matrix. Highly dispersed CNTs and CBs among the Ag flakes formed three-dimensional conducting networks to improve the conductivity of ECAs. The conductivity of ternary hybrid ECAs (with addition of 3 wt % CNTs and 2 wt % CBs) with a low content of 55 wt % Ag flakes is higher than that of the ECAs filled with only the Ag content over 65 wt %. Meanwhile, by selecting thermoplastic polyurethane resin as the matrix, the ECAs exhibited excellent mechanical compliance. The resistivity did not change when the ECAs were bended at a 60% flexural strain or pressed under 1200 kPa. Additionally, the adhesion strength of the new composited ECAs is better than that of a commercial ECA (Abletherm 3188). Further, no obvious conductivity change was observed when the sample was stored in ambient air condition at 80 degrees C and 60% relative humidity (60%) for 15 days.

SCI

英语

通讯

high-level university construction fund for SUSTech[G01256018]

Chemistry

Chemistry, Multidisciplinary

WOS:000460237300187

AMER CHEMICAL SOC

Web of Science

1.Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

Cao, Ge,Hao, Changxiang,Gao, Xiaolan,et al. Carbon Nanotubes with Carbon Blacks as Cofillers to Improve Conductivity and Stability[J]. ACS Omega,2019,4(2):4169-4175.

Cao, Ge.,Hao, Changxiang.,Gao, Xiaolan.,Lu, Junyi.,Xue, Wei.,...&Tian, Yanqing.(2019).Carbon Nanotubes with Carbon Blacks as Cofillers to Improve Conductivity and Stability.ACS Omega,4(2),4169-4175.

Cao, Ge,et al."Carbon Nanotubes with Carbon Blacks as Cofillers to Improve Conductivity and Stability".ACS Omega 4.2(2019):4169-4175.