US 12518933 B1Patent grantUnited States

Calcium-Vanadate Electrode for Energy Storage

Official patent title

Electrochemical device based on CaV2O6/CaSiO3/g-C3N4 nanocomposite

Arabic title: جهاز كهروكيميائي قائم على المركب النانوي CaV2O6/CaSiO3/g-C3N4

Invention

Problem

Electrochemical storage research needs electrode materials that combine charge-storage performance, usable conductivity, and cycling stability in a manufacturable electrode architecture.

Why it matters

Higher-performing electrode formulations could support compact storage devices and materials research, but their value depends on verified units, full-cell behavior, lifetime, safety, and production cost.

Approach

The device coats fluorine-doped tin oxide with a CaV2O6/CaSiO3/g-C3N4 nanocomposite, PVDF-type binder, and carbon black, and operates it with counter and reference electrodes in an electrolyte.

Who may benefit

Potential beneficiaries include electrochemical-storage researchers, electrode manufacturers, nanocomposite developers, university laboratories, and specialty-material suppliers.

Potential value

The disclosed electrode integrates three active inorganic and carbon-nitride phases with defined loading, binder, and conductive-carbon ranges and states electrochemical performance and cycling limits.

Background

Electrode performance reflects active-material chemistry, electronic and ionic transport, binder content, current-collector contact, and test conditions. Composite electrodes can combine complementary phases, while conductive carbon and polymer binder maintain an electrical network and mechanical cohesion. Metrics reported in a three-electrode arrangement do not automatically translate to a packaged cell. Evaluation therefore requires clear units, mass normalization, electrolyte composition, voltage window, rate capability, repeated cycling, self-discharge, and comparison against appropriate controls and commercial materials.

Technology overview

The working electrode contains 80–90 wt. % CaV2O6/CaSiO3/g-C3N4, 2–10 wt. % binder, and 5–15 wt. % carbon black on fluorine-doped tin oxide. Each nanocomposite component is 20–40 wt. %. Claims state +0.45 to +0.55 V redox potential, 190–210 F/g at 1 mV/s, 155–175 F/g at 0.25 mV/s, 20–25 Wh/g energy density, 200–220 W/kg power density, and at least 80% capacity retention after 1,000 cycles.

Potential applications

Three-electrode energy-storage research.
Nanocomposite working-electrode development.
Supercapacitor-material screening.
Electrochemical impedance and cycling studies.

Evidence-supported advantages

Defines active-material, binder, and carbon ranges.
Uses a fluorine-doped tin-oxide current collector.
States capacity at two scan rates.
Includes impedance and conductivity parameters.
States a 1,000-cycle retention threshold.

Development stage

A laboratory three-electrode architecture and stated electrochemical performance ranges are described; full-cell validation and commercialization were not established. The development stage was not independently verified.

Commercial opportunity

The electrode could be investigated for specialty supercapacitor or hybrid-storage components. Commercial work requires verification of the reported units and normalization, independent cycling and rate tests, two-electrode full-cell data, voltage and thermal safety, vanadium release, scalable coating and drying, raw-material cost, and comparison with established activated-carbon electrodes.

Patent classifications

WIPO IPC

H01G11/46Capacitors; electrolytic capacitors, rectifiers, detectors, switching devices and light- or temperature-sensitive devices
H01G11/38Capacitors; electrolytic capacitors, rectifiers, detectors, switching devices and light- or temperature-sensitive devices

CPC

H01G11/38Capacitors; electrolytic capacitors, rectifiers, detectors, switching devices and light- or temperature-sensitive devices
H01G11/46Capacitors; electrolytic capacitors, rectifiers, detectors, switching devices and light- or temperature-sensitive devices
H01G11/02Capacitors; electrolytic capacitors, rectifiers, detectors, switching devices and light- or temperature-sensitive devices
H01G11/86Capacitors; electrolytic capacitors, rectifiers, detectors, switching devices and light- or temperature-sensitive devices
H01G11/62Capacitors; electrolytic capacitors, rectifiers, detectors, switching devices and light- or temperature-sensitive devices

Inventors

First inventorMohamed Khairy Abdel Fattah Omran
InventorBabiker Yagoub Elhadi Abdulkhair
InventorKhaled Faisal Mahmoud Qasim

Keywords

electrochemical device
calcium metavanadate
calcium silicate
graphitic carbon nitride
working electrode
specific capacity
cycle retention
energy density

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.