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In recent years, the rapid development of modern society is calling for advanced energy storage to meet the growing demands of energy supply and generation. As one of the most promising energy storage systems, secondary batteries are attracting much attention. The electrolyte is an important part of the secondary battery, and its composition is closely related to the electrochemical performance of...
Contact prelithiation is strongly considered for compensating the initial capacity loss of lithium‐ion batteries, exhibiting great potential for ultralong cycle life of working batteries and the application of large‐scale energy‐storage systems. However, the utilization of the sacrificial Li source for contact prelithiation is low (<65%). Herein the fundamental mechanism of contact prelithiation...
In article number 2003104, Seung Jae Yang and co‐workers report 3D graphite nanoballs (GNBs) enabled by the coordination of tannic acid and atomically distributed nickel ion. The GNB facilitates rapid and stable delivery of lithium ions through exposed edges in multiple directions.
Continuous efforts have been made to achieve nanostructured carbon materials with highly ordered graphitic structures using facile synthetic methods. 3D graphite nanoballs (GNBs) are synthesized by the low‐temperature pyrolysis of a non‐graphitizable precursor, tannic acid (TA). Abundant phenol groups on TA bind to Ni2+ to form metal‐phenolic coordination, which renders each Ni cation to be atomically...
Fast charging enables electronic devices to be charged in a very short time, which is essential for next‐generation energy storage systems. However, the increase of safety risks and low coulombic efficiency resulting from fast charging severely hamper the practical applications of this technology. This Review summarizes the challenges and recent progress of lithium batteries for fast charging. First,...
Novel amorphous vanadium oxide coated copper vanadium oxide (Cu11V6O26/V2O5) microspheres with 3D hierarchical architecture have been successfully prepared via a microwave‐assisted solution method and subsequent annealing induced phase separation process. Pure Cu11V6O26 microspheres without V2O5 coating are also obtained by an H2O2 solution dissolving treatment. When evaluated as an anode material...
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