US 12509357 B1Patent grantUnited States

Bismuth-Oxide Nanocomposite for Energy Storage

Official patent title

Bi2O3/CaSiO3/g—C3N4 particulate crystalline nanocomposite

Arabic title: مركب نانوي بلوري جسيمي من Bi2O3/CaSiO3/g-C3N4

Invention

Problem

Activated carbon can provide high surface area but may have limited energy density, rate capability, pore control, conductivity, and stability, while poorly integrated composite phases can reduce photocatalytic or electrochemical performance.

Why it matters

A porous three-phase material could support energy-storage and photocatalysis research, but the publication does not establish application-specific performance; electrochemical behavior, catalytic activity, bismuth release, durability, safety, and scalability require independent verification.

Approach

The disclosure combines monoclinic Bi2O3, CaSiO3, and mesoporous g-C3N4 crystalline phases and provides a multistep route for preparing and integrating them as a particulate nanocomposite.

Who may benefit

Potential beneficiaries include energy-materials laboratories, photocatalysis researchers, supercapacitor developers, nanocomposite manufacturers, characterization facilities, and university technology-transfer teams.

Potential value

The material combines two metal-containing crystalline phases with mesoporous carbon-nitride nanosheets, defined phase ratios and morphology, and an explicit preparation protocol for application testing.

Background

Activated carbon is common in supercapacitors because of its surface area, but broad pore distributions, limited conductivity, low rate capability, and environmental sensitivity can constrain performance. Carbon nanostructures can improve accessible area and charge transfer, while graphitic carbon nitride offers structural tunability and broader light absorption. Its morphology and precursor route influence photocatalytic behavior. Combining g-C3N4 with metal-containing phases may provide complementary properties, but poor phase stability or unfavorable interactions can undermine performance, so composition and preparation conditions must be controlled.

Technology overview

The claimed material contains monoclinic Bi2O3, CaSiO3, and g-C3N4, with a Bi2O3:CaSiO3:g-C3N4 weight ratio of about (0.8-1.2):(0.8-1.2):(0.8-1.2). Embodiments use Bi2O3 and CaSiO3 nanowires with median lengths of about 20 to about 100 nm and mesoporous g-C3N4 nanosheets. Claims specify multimodal or trimodal pores and surface area from about 60 to about 100 m2/g. A multistep process separately prepares the phases, combines them in a polar protic solvent, heats the dispersion, and isolates the solid.

Potential applications

Potential electrode-material research for supercapacitors.
Potential photocatalyst screening under visible-light conditions.
Studies of porous multiphase nanocomposites for energy storage.
Research on Bi2O3/CaSiO3/g-C3N4 phase and morphology interactions.

Evidence-supported advantages

Combines three defined crystalline phases in one particulate material.
Includes mesoporous g-C3N4 nanosheets and oxide nanowires.
Specifies phase ratio, pore modes, surface area, and morphology.
Provides an explicit route for separately preparing and integrating the phases.

Development stage

The patent publication specifies a material and fabrication protocol; application-specific performance and commercialization were not established, and development stage was not independently verified.

Commercial opportunity

The material could support licensed formulations or collaborative programs in energy storage and photocatalysis. A product pathway requires selecting a target application and validating capacitance or catalytic activity, cycling and phase stability, conductivity, light response, bismuth and particle release, process yield, scale-up, safety, and comparative economics.

Patent classifications

WIPO IPC

C01G29/00Compounds containing metals not covered by subclasses C01D or C01F

CPC

C01G29/00Compounds containing metals not covered by subclasses C01D or C01F
B82Y30/00Specific uses or applications of nanostructures; measurement or analysis of nanostructures; manufacture or treatment of nanostructures
C01P2002/01Indexing scheme for structural and physical aspects of solid inorganic compounds
C01P2002/76Indexing scheme for structural and physical aspects of solid inorganic compounds
C01P2002/90Indexing scheme for structural and physical aspects of solid inorganic compounds
C01P2004/04Indexing scheme for structural and physical aspects of solid inorganic compounds
C01P2004/16Indexing scheme for structural and physical aspects of solid inorganic compounds
C01P2004/64Indexing scheme for structural and physical aspects of solid inorganic compounds
C01P2004/80Indexing scheme for structural and physical aspects of solid inorganic compounds
C01P2006/12Indexing scheme for structural and physical aspects of solid inorganic compounds
C01P2006/17Indexing scheme for structural and physical aspects of solid inorganic compounds

Inventors

First inventorMohamed Khairy Abdel Fattah Omran
InventorBabiker Yagoub Elhadi Abdulkhair

Keywords

Bi2O3
CaSiO3
g-C3N4
crystalline nanocomposite
mesoporous nanosheets
nanowires
energy storage
photocatalysis

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.