Organic/Inorganic Hybrid Fibers: Controllable Architectures for Electrochemical Energy Applications

Abstract

Organic/inorganic hybrid fibers (OIHFs) are intriguing materials, possessing an intrinsic high specific surface area and flexibility coupled to unique anisotropic properties, diverse chemical compositions, and controllable hybrid architectures. During the last decade, advanced OIHFs with exceptional properties for electrochemical energy applications, including possessing interconnected networks, abundant active sites, and short ion diffusion length have emerged. Here, a comprehensive overview of the controllable architectures and electrochemical energy applications of OIHFs is presented. After a brief introduction, the controllable construction of OIHFs is described in detail through precise tailoring of the overall, interior, and interface structures. Additionally, several important electrochemical energy applications including rechargeable batteries (lithium-ion batteries, sodium-ion batteries, and lithium-sulfur batteries), supercapacitors (sandwich-shaped supercapacitors and fiber-shaped supercapacitors), and electrocatalysts (oxygen reduction reaction, oxygen evolution reaction, and hydrogen evolution reaction) are presented. The current state of the field and challenges are discussed, and a vision of the future directions to exploit OIHFs for electrochemical energy devices is provided.

Acoustotemplating: rapid synthesis of freestanding quasi-2D MOF/graphene oxide heterostructures for supercapacitor applications

“…16,17 Moreover, MOFs are conventionally synthesized in powder form, making it challenging to assemble them into lms without a polymeric binder. 18 This, together with the MOFs' poor conductivity, has, to a large extent, limited their use for electrochemical and energy storage applications, 19 including supercapacitors-high power-density, long-lifespan, fastcharging energy storage devices, 20,21 which stand to benet from the tailorable and processable nature of the MOF, particularly where exibility in the material is desired. 22 Consequently, these limitations have necessitated the combination of the MOF with conductive materials, although we note that other factors beyond the conductivity alone are important considerations, particularly for electrochemical applications.…”

A self-assembled nanoflower-like Ni5P4@NiSe2 heterostructure with hierarchical pores triggering high-efficiency electrocatalysis for Li–O2 batteries

“…The 3D nanoflower-like structure with self-assembled nanosheets not only promoted the diffusion of O 2 /Li + throughout the cathode, but also provided sufficient active sites for storing the discharge products. Besides, the excellent electrical conductivity of the heterostructure can accelerate the charge transfer during the charge/discharge processes and enhance the electrochemical reaction kinetics [78,79]. More importantly, the unique heterostructure shows a significant effect on the electron redistribution and disordered atomic arrangement, which can provide additional active sites to improve the ORR/OER bifunctional catalytic activity [66].…”

Growing Bacterial Cellulose-Based Sustainable Functional Bulk Nanocomposites by Biosynthesis: Recent Advances and Perspectives

“…In the early 1980s, the concept of nanocomposites was first introduced, which consisted of more than one kind of solid-phase material with at least one nanomaterial . Nanomaterials, with at least one dimension smaller than 100 nm, have many unique physical properties that can be incorporated into composite materials to achieve improved performance and functionality. , However, when multiple solid-phase components are composited into one material, the problems of poor dispersion and nonuniformity are encountered.…”