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For large‐scale fuel cell applications, it is significant to replace expensive Pt‐based oxygen reduction reaction (ORR) electrocatalysts with nonprecious metal‐ or metal‐free carbon‐based catalysts with high activity. However, it is still challenging to deeply understand the role of intrinsic defects and the origin of ORR activity in pure nanocarbon. Therefore, a novel self‐assembly and a pyrolysis...
The slow redox kinetics during cycling process and the serious shuttle effect caused by the solubility of lithium polysulfides (LiPSs) dramatically hinder the practical application of Li‐S batteries. Herein, a facile and scalable spray‐drying strategy is presented to construct conductive polar Mo2C quantum dots‐decorated carbon nanotube (CNT) networks (MCN) as an efficient absorbent and electrocatalyst...
Cesium lead iodide (CsPbI3) perovskite has gained great attention due to its potential thermal stability and appropriate bandgap (≈1.73 eV) for tandem cells. However, the moisture‐induced thermodynamically unstable phase and large open‐circuit voltage (VOC) deficit and also the low efficiency seriously limit its further development. Herein, long chain phenylethylammonium (PEA) is utilized into CsPbI...
Flexible transient photodetectors, a form of optoelectronic sensors that can be physically self‐destroyed in a controllable manner, could be one of the important components for future transient electronic systems. In this work, a scalable, device‐first, and bottom‐up thinning process enables the fabrication of a flexible transient phototransistor on a wafer‐compatible transferred silicon nanomembrane...
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