Recent progress and strategies on mixed-dimensional heterostructures for potassium-ion storages. (June 2022)

• Record Type: Journal Article
• Authors: Hsieh, Yi-Yen; Tuan, Hsing-Yu
• Is Part Of: Materials today sustainability. Volume 18(2022)
• Publication Date: 2022-06
• Subjects: Mixed-dimensional -- Heterostructure -- Heterointerface engineering -- Multidimension -- Potassium-ion storage; Materials science -- Environmental aspects -- Periodicals; Sustainable engineering -- Periodicals; 620.11
• DOI: 10.1016/j.mtsust.2022.100141
• Languages: English
• ISSNs: 2589-2347

Abstract

Abstract: Renewable potassium-ion energy storage shows attractive potential due to high-discharge platform and sufficient energy density, with outstanding advantages of abundant reserves and cost-effectiveness. However, key anode materials face various bottlenecks and formidable challenges, such as poor electrical conductivity, low ionic diffusivity, sluggish interfacial/surface reaction, and severe volume expansion, which distinctly inhibit the electrochemical performance of potassium-ion system. The construction of heterostructures can synergistically improve the deficiencies and combine the unique functionalities of different materials to enhance the potassium-ion storage capacity of metal chalcogenides or oxides. In this review, understandings and insights into the diffusion and kinetic behavior of mixed-dimensional heterostructures (MDHs) will be systematically discussed and revealed. Furthermore, these benefits and merits will be maximized and optimized, accompanied by recent state-of-the-art synthetic strategies and characterization techniques. Finally, we propose improvements and perspectives for the feasible development of heterostructures in next-generation energy storage systems. Graphical abstract: Image 1 Highlights: A brief discussion on comparison and merits of heterostructures in potassium-ion system. Emphasis on the role of heterostructures in potassium-ion storages in promoting the kinetic diffusivity and cyclability. Different mixed-dimensional heterostructures and their unique properties and design strategies. The future directions and perspectives for the development of heterostructures in next-generation energy storage.