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Potassium ion batteries (PIBs) have aroused intensive research interest owing to their abundant source, low cost, and suitable working potential. Here, a V2C‐VO2 nanoribbon intertwined nanosheet 3D multi‐heterostructure with rich heterointerface and heterojunction is fabricated via a facile solution‐based method for realizing a highly flexible and robust anode material of PIBs. The co‐existence of...
A low‐temperature, solution‐processable organic electron‐transporting material (ETM) is successfully developed for efficient conventional n‐i‐p perovskite solar cells (PVSCs). This ETM can show a high efficiency over 17% on rigid device and 14.2% on flexible PVSC. To the best of our knowledge, this efficiency is among the highest values reported for flexible n‐i‐p PVSCs with negligible hysteresis...
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