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In article number 1702987, Cheng Zhong, Yida Deng, and co‐workers synthesize atomic layer Co3O4 nanosheets (1.6 nm thickness) by a simple solvothermal method with a controlled concentration of H2O2. The atomic layer Co3O4 nanosheets exhibit high bifunctional activity for the oxygen reduction reaction and oxygen evolution reaction, which is key to knittable Zn–air batteries. The batteries are successfully...
Flexible, wearable, and portable energy storage devices with high‐energy density are crucial for next‐generation electronics. However, the current battery technologies such as lithium ion batteries have limited theoretical energy density. Additionally, battery materials with small scale and high flexibility which could endure the large surface stress are highly required. In this study, a yarn‐based...
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