MXene fillers and silver flakes filled epoxy resin for new hybrid conductive adhesives

Superstable, High-Conductivity Cu Conductive Adhesive

“…When the temperature increased to 250 °C, the resistivity decreased significantly and reached a minimum of 65.12 μΩ·cm –1 at 30 min. This result is much better than previously published papers, ,,,− ,,,− , and the details are shown in Table . Nevertheless, abnormal phenomena materialized at 300 °C.…”

“…Owing to the high-temperature environment, the diffusion of oxygen atoms and reactivity enhanced, resulting in the oxidation of internal Cu-FA/DT, which leads to the deterioration of the conductivity of the device. Overall, the device still maintains a low resistivity, even lower than the original resistivity in the literature. ,,,− ,,,− , …”

“…Overall, the device still maintains a low resistivity, even lower than the original resistivity in the literature. 4,5,7,[11][12][13]16,22,[29][30][31]36 ■ CONCLUSIONS In this article, we demonstrate an effective method for preparing Cu ECAs with high stability and high conductivity under environmental conditions. The modification of a formic acid anion and organic mercaptan made Cu ECAs possess excellent oxidation resistance and higher electrical conductivity.…”

“…25−29 In addition, liquid metals are also used for conductive adhesives, but their phase transition at high temperatures can cause reliability issues. 30 Although copper combines high electrical conductivity and a low price, its susceptibility to oxidation remains a great challenge.…”

“…The conductive fillers, e.g., metallic microflakes, − nanoparticles, − and nanowires, − mainly determine their electrical conductive performance. Gold and silver are limited by their expensive price, while carbon or MXene materials possess low filling density owing to their large specific surface area and poor dispersion. − In addition, liquid metals are also used for conductive adhesives, but their phase transition at high temperatures can cause reliability issues . Although copper combines high electrical conductivity and a low price, its susceptibility to oxidation remains a great challenge.…”