Synthesis of Citrate-Capped Sn Nanoparticles with Excellent Oxidation Resistance for High-Performance Electrically Conductive Adhesives

Cao, Ge1; Chen, Yonghao1; Jiang, Chengwei1; Xu, Jiatong1; Xue, Wei1; Zhang, He2; Tian, Yanqing1

2023-02-28

10.1021/acsaelm.2c01622

ACS APPLIED ELECTRONIC MATERIALS   Impact Factor & Quartile

2637-6113

Tin (Sn) metallic material is one of the best-known metals and has been extensively studied due to its ease of processing, low melting point, and low cost. However, it is still challenging to synthesize high-processing performance and antioxidant Sn nanoparticles with tunable sizes. This research reported a facile, easy-to-scale-up polyol-mediated synthesis of Sn nanoparticles assisted by sodium citrates as a capping agent. The presence of citrate capping facilitated uniform nucleation of Sn nanoparticles and enhanced their antioxidant capacity and dispersion properties. These nanoparticles can remain stable against oxidation for more than 270 days in an ambient atmosphere, even under continuous heating at 200 degrees C for over 12 h. The citrate capping also inhibits interparticle agglomeration and allows the preparation of high-quality suspensions in water and many conventional organics. Moreover, efficient size tuning over a wide range (60 nm-1 mu m) can be achieved simply by changing the Sn2+ precursor concentrations. The above-mentioned antioxidant capacity and processability allow them to combine with silver flakes in thermosetting epoxy resin as complementary conductive fillers effectively, creating conductive pathways among the silver flakes to obtain high-performance electrically conductive adhesives (ECAs). By adding Sn nanoparticles as complementary conductive fillers, the resistivity of the ECAs can be reduced to 1/ 6000 of that of the ECAs filled with only the same mass ratio of silver flakes, exhibiting its great potential in future electronics.

Sn nanoparticle polyol-mediated citrate-capped size-tunable electrically conductive adhesives

SCI

English

First ; Corresponding

SUSTech[Y01256114] ; 2022 Guangdong Provincial College Students Innovation and Entrepreneurship Training Program[2022S01] ; Special funds for the Cultivation of Guangdong College Students' Scientific and Technological Innovation ( "Climbing Program" Special Funds)[pdjh2023c10906]

Engineering ; Materials Science

Engineering, Electrical & Electronic ; Materials Science, Multidisciplinary

WOS:000941274400001

AMER CHEMICAL SOC

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China

Cao, Ge,Chen, Yonghao,Jiang, Chengwei,et al. Synthesis of Citrate-Capped Sn Nanoparticles with Excellent Oxidation Resistance for High-Performance Electrically Conductive Adhesives[J]. ACS APPLIED ELECTRONIC MATERIALS,2023,5(2).

Cao, Ge.,Chen, Yonghao.,Jiang, Chengwei.,Xu, Jiatong.,Xue, Wei.,...&Tian, Yanqing.(2023).Synthesis of Citrate-Capped Sn Nanoparticles with Excellent Oxidation Resistance for High-Performance Electrically Conductive Adhesives.ACS APPLIED ELECTRONIC MATERIALS,5(2).

Cao, Ge,et al."Synthesis of Citrate-Capped Sn Nanoparticles with Excellent Oxidation Resistance for High-Performance Electrically Conductive Adhesives".ACS APPLIED ELECTRONIC MATERIALS 5.2(2023).