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Article
Open AccessA locally solvent-tethered polymer electrolyte for long-life lithium metal batteries
Solid polymer electrolytes exhibit enhanced Li+ conductivity when plasticized with highly dielectric solvents such as N,N-dimethylformamide (DMF). However, the application of DMF-containing electrolytes in solid-...
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Article
Open AccessChlorine bridge bond-enabled binuclear copper complex for electrocatalyzing lithium–sulfur reactions
Engineering atom-scale sites are crucial to the mitigation of polysulfide shuttle, promotion of sulfur redox, and regulation of lithium deposition in lithium–sulfur batteries. Herein, a homonuclear copper dual...
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Article
Open AccessCollaborative and privacy-preserving retired battery sorting for profitable direct recycling via federated machine learning
Unsorted retired batteries with varied cathode materials hinder the adoption of direct recycling due to their cathode-specific nature. The surge in retired batteries necessitates precise sorting for effective ...
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Article
Machine-learning-assisted design of a binary descriptor to decipher electronic and structural effects on sulfur reduction kinetics
The catalytic conversion of lithium polysulfides is a promising way to inhibit the shuttling effect in Li–S batteries. However, the mechanism of such catalytic systems remains unclear, which prevents the ratio...
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Article
Integrating molybdenum sulfide selenide-based cathode with C-O-Mo heterointerface design and atomic engineering for superior aqueous Zn-ion batteries
Transition metal dichalcogenides (TMDs) have been regarded as promising cathodes for aqueous zinc-ion batteries (AZIBs) but suffer from sluggish reaction kinetics due to their poor conductivity and the strong ...
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Article
Low-temperature bonding of surface-activated polyimide to Cu Foil in Pt-catalyzed formic acid atmosphere
In this study, a two-step process involving oxygen plasma surface activation and thermos-compression in Pt-catalyzed formic acid gas was used to bond Cu foil and polyimide. The oxygen plasma was used to activa...
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Article
Mechanical and microstructural enhancements of Ag microparticle-sintered joint by ultrasonic vibration
Silver (Ag) microparticle sintering bonding is a promising die-attach method for power device packaging. In this study, an ultrasonic-assisted bonding method that bonds chestnut-burr-like Ag microparticles rap...
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Article
Interfacial transformation of preoxidized Cu microparticles in a formic-acid atmosphere for pressureless Cu–Cu bonding
Wide bandgap (WBG) power devices have been attracting increasing attention for next-generation electronic applications. Cu–Cu bonding has been developed to accommodate the high temperature and current characte...
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Article
Wettability, interfacial reactions, and impact strength of Sn–3.0Ag–0.5Cu solder/ENIG substrate used for fluxless soldering under formic acid atmosphere
Fluxes have a negative impact on the environment; as a result, fluxless soldering has become a promising method in electronic packaging. However, detailed studies on fluxless soldering are very rare, especiall...
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Article
Open AccessSuppressed Growth of (Fe, Cr, Co, Ni, Cu)Sn2 Intermetallic Compound at Interface between Sn-3.0Ag-0.5Cu Solder and FeCoNiCrCu0.5 Substrate during Solid-state Aging
High-entropy alloys (HEAs) are promising materials for next-generation applications because of their mechanical properties, excellent high-temperature stability, and resistance against oxidation and corrosion....
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Article
Effect of Substrates on Fracture Mechanism and Process Optimization of Oxidation–Reduction Bonding with Copper Microparticles
Oxidation–reduction bonding (ORB) is a promising method to achieve Cu-Cu bonding with copper microparticles by a pressureless and low-temperature process. In this study, the influences of Cu substrates with an...
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Article
Effects of Phenolic Resin Addition on the Electrical Conductivity and Mechanical Strength of Nano-Copper Paste Formed Cu-Cu Joints
Cu-Cu joints bonded by nano-copper pastes with different amounts of phenolic resin were developed at a low temperature (240°C) and a low pressure (1 MPa). The shear strengths of the joints were measured and th...
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Article
Effects of heat treatment on the activated flux TIG-welded AZ31 magnesium alloy joints
The effects of heat treatment on the microstructures and mechanical properties of tungsten inert gas-welded AZ31 magnesium alloy joints with Cr2O3 flux coating were investigated by microstructural observations, m...
