Abstract In the recent decade, polymer thermoelectric (TE) composite has witnessed explosive achievements to address energy generation and utilization. Besides significant progress in enhancement of TE performance, high mechanical property received increasing attention, being important for practical applications complex environments. However, performance always been improved at sacrifice vice versa, which poses a great challenge. Here, ionic liquid (IL)‐assisted fabrication flexible films...

Poly(3,4 ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is perhaps the most successful polymer material for thermoelectric (TE) applications. So far, treatments by high-boiling solvents, acid or base, mixing with carbon nanotube (CNT) are main ways to improve its TE performance. Herein, we report synergistically boosting properties of PEDOT:PSS/single-walled CNT (SWCNT) composites ionic liquid (IL). The prepared physically SWCNT dispersion containing IL PEDOT:PSS solution and...

Organic thermoelectric (TE) composites and flexible devices have gained a rapid development in recent decade. Herein, foldable film of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)/single-walled carbon nanotube (PEDOT:PSS/SWCNT) composite is fabricated by post-treatment with an ionic liquid (IL), S-shape TE generator (TEG) designed to harvest heat from human body via vertical temperature gradient. After being post-treated IL bis(trifluoromethane)sulfonimide lithium salt (LiTFSI),...

Although organic polymer thermoelectric (TE) materials have witnessed explosive advances in the recent decade, molecular mechanism of crystallization engineering TE performance, even for most successful poly(3,4-ethylenedioxythiophene) : poly(styrene sulfonate) (PEDOT PSS), is still far from clear. Here, we deepen understanding role annealing-induced crystalline microstructure evolution on performance PEDOT PSS film with thickness 10 μ m, which usually more effective than thin ones...

We report flexible composite films of PEDOT:PSS with Chinese traditional Xuan paper, showing excellent foldability and decent thermoelectric performance.

Abstract Polymer thermoelectric (TE) composites have witnessed explosive developments in recent years, arising from their promising prospect for lightweight flexible electronics and capability of harvesting waste-heat. In sharp contrast with intrinsically conducting polymers (CPs), the insulating thermoplastics seldom been employed as matrices TE despite advantages low costs, controllable melt-flowing behaviors excellent mechanical properties. Here, we report films...

Significant progress has been achieved for flexible polymer thermoelectric (TE) composites in the last decade due to their potential application wearable devices and sensors. In sharp contrast exceptional increase TE studies at room temperature, mechanical performance of received relatively less attention despite significance high-temperature environments. The performances poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)/single-walled carbon nanotube (PEDOT:PSS/SWCNT) composite films...

Mechanical components in tribological systems exposed to elevated temperatures are gaining increased attention since more and designed operate under extreme conditions. In hot metal forming, the effect of temperature on friction wear is especially important it directly related process economy (tool wear) quality produced parts (friction between tool workpiece). This study therefore focused fundamental understanding pertaining characteristics prehardened work steel during sliding against...

Severe adhesion, also referred to as galling, is a critical problem in press hardening, especially stamping tools used for hot forming of Al–Si-coated ultra-high strength steel. Galling known develop rapidly on the tool surface and it negatively affects quality formed products. Earlier research this topic has focused galling initiation. However, studies development during extended sliding corresponding quantitative measurement still lack depth. In present study, tribological test established...

Press hardening is employed in the automotive industry to produce advanced high-strength steel components for safety and structural applications. This hot forming process depends on friction as it controls deformation of sheet. However, also associated with wear tools. Tool a critical issue when comes dimensional accuracy produced reduces service life tool. It therefore desirable enhance durability tools by studying influence high contact pressures, cyclic thermal loading, repetitive...

To make the light-emitting diode (LED) more compact and effective, flip chip solder joint is recommended in LED chip-scale packaging (CSP) with critical functions mechanical support, heat dissipation, electrical conductivity. However, generation of voids always challenges strength, thermal stability, reliability joints. This paper models 3D random Sn96.5–Ag3.0–Cu0.5 (SAC305) joint, investigates effect shock load on its both simulations experiments referring to JEDEC test standard...

Press hardening is widely utilized to form ultra-high-strength steels characterized by a high strength-to-weight ratio for automotive components. processes include heating boron–manganese austenite phase, forming the at temperature, and cooling formed blanks until martensite phase reached . However, press lead severe contact conditions between blank tools including pressure, relative sliding, temperatures, which result in tool wear increased maintenance cost. The that occur stamping are...