Indigo Secondary Battery With Sealed Non-Aqueous Electrolyte

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Solution Overview

Problem

Existing batteries have a high environmental impact due to the use of materials like lead, cadmium, manganese, nickel, and fluorine, and require special disposal, while air batteries suffer from electrolyte evaporation issues that limit their storage time.

Innovation Solution

A secondary battery design using a positive electrode with indigo dye, a negative electrode with magnesium, sodium, or calcium, and a non-aqueous electrolyte, eliminating the need for an air intake port and reducing environmental impact.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If air batteries use oxygen in the air as a positive electrode active material, then the environmental impact is reduced, but the electrolyte evaporates from the air intake port making them unsuitable for long-term storage

Engineering Contradiction:
Improveenvironmental impactVSAvoidstorage time
Core Design Contradiction:
Object-affected harmful factorsVSDuration of action of stationary object

Solution Approach 1:

The patent extracts the air intake port from the battery system, eliminating the pathway for electrolyte evaporation. By using a sealed structure without an air intake port, the battery achieves both low environmental impact and long-term storage capability, resolving the contradiction between environmental friendliness and storage duration.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent creates an inert sealed environment inside the battery by filling it with inert gas or maintaining a controlled atmosphere. This prevents electrolyte evaporation while allowing the use of environmentally friendly materials, thus resolving the contradiction between low environmental impact and long storage time.

Inventive Principle:
Principle #39Inert atmosphere (Inert environment)

2Reliability

If batteries use materials like lead compounds, cadmium compounds, manganese compounds, nickel compounds, and fluorine compounds, then the battery performance is improved, but the environmental impact increases requiring special treatment when discarded

Engineering Contradiction:
Improvebattery performanceVSAvoidenvironmental impact
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the material parameters by replacing toxic heavy metals (lead, cadmium, nickel) with environmentally friendly alternatives such as indigo dye for the positive electrode and magnesium, sodium, or calcium for the negative electrode. This substitution maintains battery performance while significantly reducing environmental impact and disposal requirements.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent employs composite material structures combining indigo dye with conductive materials and electrolytes to achieve both high performance and environmental friendliness. The composite approach allows the battery to function effectively without relying on toxic materials, resolving the contradiction between performance and environmental impact.

Inventive Principle:
Principle #40Composite materials

3Duration of action of stationary object

If a sealed structure is used to prevent electrolyte evaporation, then long-term storage is enabled, but the battery cannot intake oxygen needed for air battery operation

Engineering Contradiction:
Improvestorage timeVSAvoidoxygen intake capability
Core Design Contradiction:
Duration of action of stationary objectVSAdaptability or versatility

Solution Approach 1:

The patent removes the air intake port entirely from the battery design, eliminating the conflict between sealing and oxygen intake. By extracting this component, the battery achieves complete sealing for long-term storage while maintaining functionality through alternative chemical mechanisms that do not require atmospheric oxygen.

Inventive Principle:
Principle #2Taking out (Extraction)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The battery achieves long-term storage and low environmental impact, with improved stability and discharge capacity, making it suitable for various electronic devices.

Implementation Method 1

a positive electrode containing indigo dye; a negative electrode containing magnesium, sodium or calcium

Methodology Applied
Scientific EffectRedox reactions: Redox Reactions

Implementation Method 2

an electrolyte disposed between the positive electrode and the negative electrode

Methodology Applied
Scientific EffectIon transport: Ion Exchange

Data Source

PatentUS20260024763A1Secondary Battery
Publication Date: 2026.01.22 NIPPON TELEGRAPH & TELEPHONE CORP
  • US20260024763A1 patent drawing
  • US20260024763A1 patent drawing
  • US20260024763A1 patent drawing

AI summary

The secondary battery includes a positive electrode containing indigo, a negative electrode containing magnesium, sodium, or calcium, and an electrolyte disposed between the positive electrode and the negative electrode.