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Stretchable strain sensors suffer the trade‐off between sensitivity and linear sensing range. Developing sensors with both high sensitivity and wide linear range remains a formidable challenge. Different from conventional methods that rely on the structure design of sensing nanomaterial or substrate, here a heterogeneous‐surface strategy for silver nanowires (AgNWs) and MXene is proposed to construct...
Ammonium ions (NH4+), as non‐metallic charge carriers, are attracting attention in aqueous batteries due to its low molar mass, element sufficiency, and non‐toxicity. However, the host materials for NH4+ storage are still limited. Herein, an oxygen defects‐rich manganese oxide (MnO2–x) for NH4+ storage are reported. The oxygen defects can endow the MnO2–x sample with improved electric conductivity...
As the power conversion efficiency (PCE) of organic photovoltaics (OPVs) approaches 19%, increasing research attention is being paid to enhancing the device's long‐term stability. In this study, a robust interface engineering of graphene oxide nanosheets (GNS) is expounded on improving the thermal and photostability of non‐fullerene bulk‐heterojunction (NFA BHJ) OPVs to a practical level. Three distinct...
In planar perovskite solar cells, it is vital to engineer the extraction and recombination of electron–hole pairs at the electron transport layer/perovskite interface for obtaining high performance. This study reports a novel titanium oxide (TiO2) bilayer with different Fermi energy levels by combing atomic layer deposition and spin‐coating technique. Energy band alignments of TiO2 bilayer can be...
Micro‐supercapacitors (MSCs) based on mesoporous polyaniline patterned graphene are demonstrated. The synergic effect from both electron‐double‐layer‐capacitive graphene and pseudocapacitive mesoporous‐polyaniline leads to outstanding MSC device performances, in regard to excellent volumetric capacitance and rate capabilities, which further result in a high power density of 600 W cm−3, suggesting...
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