Hydrothermal Fabrication of Three‐Dimensional Secondary Battery Anodes

Abstract

A generalized hydrothermal strategy for fabricating three-dimensional (3D) battery electrodes is presented. The hydrothermal growth deposits electrochemically active nanomaterials uniformly throughout the complex 3D mesostructure of the scaffold. Ni inverse opals coated with SnO2 nanoparticles or Co3O4 nanoplatelets, and SiO2 inverse opals coated with Fe3O4 are fabricated, all of which show attractive properties including good capacity retention and C-rate performances.

High Full‐Electrode Basis Capacity Template‐Free 3D Nanocomposite Secondary Battery Anodes

“…Fe 3 O 4 /C Composite Growth and Carbonization Treatment : In a typical solvothermal growth, via a process similar to our previous report, 5 mmol ferrocene (Sigma–Aldrich Corp.) was dissolved in 35 mL acetone. Subsequently, 1.0 mL hydrogen peroxide (30 wt%) was added into the solution followed by ultrasonication for 30 min.…”

2D and 3D photonic crystal materials for photocatalysis and electrochemical energy storage and conversion

“…[5,23–26] These technological advancements have led to the search for 3D structured microbatteries, flexible and stretchable electrochemical energy storage and conversion technologies. [27,28] Insufficient power from 2D battery configurations, including the standard slurry mixture approach to cathode materials, was an open call for the development and improvement of 3D micro- or nanobatteries using cheap and light micro/nano fabrication materials and techniques. [29] At the core of these developments are the advancement in the type of materials, where composition, crystallinity, shape and chemical potential define the cycle life, capacity, voltage and energy density, etc.…”

A selectively exposed crystal facet-engineered TiO2 thin film photoanode for the higher performance of the photoelectrochemical water splitting reaction

“…22 However, these deposition techniques are typically expensive, slow, providing a limited choice of active materials and not available for the large surface area. 23 In addition, they cannot modulate the facet selectivity of the photocatalysts and it could not be expected to improve PEC performance from facet engineering.…”