US 12623908 B2Patent grantUnited States

Carbon-Supported BiOI for Energy Storage

Official patent title

Activated carbon doped for bismuth oxy-iodide-based nanocomposites

Arabic title: كربون منشط مشوب لمركبات نانوية قائمة على أوكسي يوديد البزموت

Invention

Problem

Bismuth oxy-iodide is useful for electrical and electrochemical applications but has relatively poor intrinsic electronic conductivity. Earlier composite approaches may also be laborious, costly, or electrically inadequate.

Why it matters

Improving and controlling conductivity in carbon-supported metal-oxide materials can expand their evaluation as electrode, sensing, catalytic, adsorption, and energy-storage materials.

Approach

The invention combines bismuth oxy-iodide with particulate activated carbon and defines both the composition and a preparation method. Heated glycol precursor solutions are mixed in a solvent, cooled, and filtered to obtain a nanocomposite containing specified carbon proportions, hollow BiOI nanostructures, and defined electrical characteristics.

Who may benefit

Potential beneficiaries include advanced-material suppliers, electrochemical device developers, sensor and catalyst manufacturers, and research laboratories studying conductive nanocomposites.

Potential value

The disclosure provides a defined activated-carbon/BiOI composition and a reproducible sequence of heating, mixing, cooling, and filtration steps, together with measurable composition, structure, conductivity, dielectric, and impedance parameters.

Background

Activated carbon offers high surface area, tunable pores, and chemical and thermal stability, making it a common support in adsorption, electrode, and catalytic materials. BiOI has a layered semiconductor structure that can facilitate ion diffusion and electron transport, but its intrinsic electronic conductivity is limited. The patent notes that previously developed BiOI composites may require laborious or expensive preparation and may still have poor electrical characteristics, motivating a carbon-doped material with specified properties.

Technology overview

The material contains at least 90 wt.% bismuth oxy-iodide and 1–10 wt.% activated carbon, with claims specifying carbon particle morphology, pore structure, BiOI hollow nanospheres, crystal dimensions, and the absence of graphene, carbon nanofibers, and nanotubes. The preparation heats bismuth-nitrate/activated-carbon and potassium-iodide glycol solutions to 100 °C, combines them in a solvent, cools the reaction, and isolates the product by filtration.

Potential applications

Candidate electrode material for supercapacitors, batteries, or other electrochemical devices.
Conductive or dielectric nanocomposite platforms for electrical and electrochemical sensing.
Carbon-supported semiconductor material for photocatalytic or heterogeneous catalytic evaluation.
Porous composite material for gas, liquid, or water-treatment adsorption studies.

Evidence-supported advantages

The claimed formulation uses activated carbon without graphene, carbon nanofibers, or nanotubes.
Composition, particle structure, crystal dimensions, and carbon content are explicitly defined.
The patent reports measurable DC and AC conductivity, dielectric, and impedance characteristics.
The preparation follows specified heating, mixing, cooling, and filtration operations.

Development stage

The patent describes material synthesis and reports structural and electrical characterization; manufacturing scale-up and commercial product readiness were not independently verified.

Commercial opportunity

Potential opportunities include specialty-material production or licensing for developers of electrodes, sensors, catalysts, and conductive nanocomposite components. Product-specific performance, scale-up reproducibility, environmental handling, integration, and application testing would need independent validation.

Patent classifications

WIPO IPC

C01B32/318Non-metallic elements; compounds thereof
B82Y30/00Specific uses or applications of nanostructures; measurement or analysis of nanostructures; manufacture or treatment of nanostructures

CPC

B82Y30/00Specific uses or applications of nanostructures; measurement or analysis of nanostructures; manufacture or treatment of nanostructures
C01B32/318Non-metallic elements; compounds thereof
B82Y40/00Specific uses or applications of nanostructures; measurement or analysis of nanostructures; manufacture or treatment of nanostructures
C01G29/00Compounds containing metals not covered by subclasses C01D or C01F

Inventors

First inventorBabiker Yagoub Elhadi Abdulkhair
InventorMohamed Khairy Omran
InventorFaisal K. Algethami

Keywords

bismuth oxy-iodide
activated carbon
nanocomposite
electrical conductivity
dielectric properties
hollow nanospheres
electrode materials
glycol synthesis

Patent document and drawings

The patent publication is mapped to this record. Patent drawings remain within that publication; no separately cleared public media package has been supplied.