Recent Advances in Constructing Oriented Ion Transport Channels with Two-dimensional Layered Materials for Electrochemical Energy Storage

doi:10.15541/jim20250429

Abstract

Abstract: Two-dimensional (2D) layered materials have attracted extensive attention in the field of electrochemical energy storage due to their ordered layered structure, tunable interlayer spacing, and rich surface chemistry. In particular, the strategy of utilizing their 2D layered structure to construct oriented ion transport channels in electrochemical energy storage devices (e.g., metal-ion batteries, lithium-sulfur batteries, sodium-sulfur batteries, and supercapacitors) has become one of the current research hotspots. By achieving oriented alignment of 2D layered materials in various components of electrochemical energy storage devices (e.g., electrodes, separators, and solid-state electrolytes), long-range ordered ion transport channels with low tortuosity can be constructed, enabling high-speed ion transport and effectively enhancing the charge-discharge performance of these devices. This review focuses on the ion transport processes in electrochemical energy storage devices and provides a comprehensive overview of the research progress in constructing oriented ion transport channels using typical 2D layered materials (e.g., Two-dimensional transition metal carbonitrides (MXenes), layered double hydroxides (LDHs), 2D layered metal-organic frameworks (2D MOFs), graphene, and layered clay minerals) in electrodes, polymer electrolytes, and separators. The advantages and disadvantages of fabrication methods (external electric/magnetic field alignment, shear force alignment, self-assembly, and template methods) for achieving oriented alignment of 2D layered materials are summarized. Furthermore, the influence of the structural characteristics of oriented ion transport channels on ion transport performance including ionic conductivity, cation transference number, and ion diffusion coefficient, is analyzed, and the ion transport mechanisms within 2D layered oriented ion transport channels are discussed in depth. Finally, the current challenges and issues are concluded, and future research directions are proposed, with the aim of providing insights for the development of high-performance electrochemical energy storage devices.

Key words: 2D layered materials, electrochemical energy storage device, electrode, electrolyte, separator, directional ion transport channels, review

CLC Number:

TB332

QIN Shanli, GUO Jiawen, CHEN Yanmeng, JU An’an, WEI Yi, HUANG Kelin, HOU Xianghua, LÜ Sishi, WEN Zhipeng, WU Lian. Recent Advances in Constructing Oriented Ion Transport Channels with Two-dimensional Layered Materials for Electrochemical Energy Storage[J]. Journal of Inorganic Materials, DOI: 10.15541/jim20250429.

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