The review of typical applications of heterojunction anode materials in alkali metal ion batteries in recent years is presented.
In recent years, metal compound-based heterojunctions have received increasing attention from researchers as a candidate anode for lithium/sodium-ion batteries, because heterojunction anodes possess unique interfaces, robust architectures, and synergistic effects, thus promoting Li/Na ions storage and accelerating ions/electrons transport.
Many experiments have demonstrated that the creation of heterostructures can enhance the kinetic performance of ion batteries. However, identifying these heterostructures is crucial for material preparation and improvement. Currently, there is no single technique that can directly identify and reveal all the features of these interfaces.
In recent years, heterojunctions have received increasing attention from researchers as an emerging material, because the constructed heterostructures can significantly improve the rate capability and cycling stability of the materials.
In recent years, a few excellent review papers have also been summarized by related researchers. 1a, 2a, 11 However, heterojunction anodes are rapidly developing, and many new important findings and significant breakthroughs are continuously being reported near recently.
The presented information covers the primary research status of diverse heterojunction anode materials: i) Schottky heterostructures: they arise when metals form electrical contacts with different types of semiconductors and can enhance the electrochemical properties of the materials very well due to their synergistic effects.