Secondary Battery Hydroxide Layer Energy Density

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Solution Overview

Problem

Conventional secondary batteries face limitations in enhancing energy density and electricity accumulation capacity without using electrolytic solutions or rare elements, and existing structures do not effectively optimize battery characteristics.

Innovation Solution

A secondary battery design incorporating a first oxide semiconductor with a first charging layer composed of a insulating material and a second oxide semiconductor, a third oxide semiconductor layer of a different conductivity type, and a hydroxide layer containing a metal hydroxide, which facilitates hydrogen accumulation and electron hole conversion during charging and discharging.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If conventional secondary battery structures without electrolytic solutions are used, then device complexity is reduced, but energy density and electricity accumulation capacity are limited

Engineering Contradiction:

Improvestructure complexityVSAvoidenergy density

Core Design Contradiction:

Device complexityVSQuantity of substance

Solution Approach 1:

The battery is divided into multiple functional layers including first oxide semiconductor layer, first charging layer, third oxide semiconductor layer, and hydroxide layer. Each layer performs a specific function in the charging/discharging process, enabling complex electrochemical reactions without requiring electrolytic solutions or rare elements.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent uses composite material structures where the first charging layer combines insulating material with second oxide semiconductor, and the hydroxide layer contains metal hydroxide of the third oxide semiconductor. This composite approach enables high energy density while maintaining structural simplicity and avoiding rare elements.

Inventive Principle:

Principle #40Composite materials

2Volume of moving object

If thinning of battery structure is pursued, then device size is reduced, but electricity accumulation capacity decreases

Engineering Contradiction:

Improvebattery thicknessVSAvoidelectricity accumulation capacity

Core Design Contradiction:

Volume of moving objectVSQuantity of substance

Solution Approach 1:

The first charging layer is designed with a porous structure that allows efficient ion transport while maintaining thin dimensions. The porous structure increases the effective surface area for electrochemical reactions, enabling high electricity accumulation capacity in a thin profile.

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

The patent optimizes the thickness and composition parameters of each layer to achieve the desired balance between thinness and capacity. By carefully controlling the parameters of oxide semiconductors and hydroxide layers, high energy density is achieved without requiring thick battery structures.

Inventive Principle:

Principle #35Parameter changes

3Quantity of substance

If hydroxide layer containing metal hydroxide is added, then electricity accumulation capacity increases, but device complexity increases

Engineering Contradiction:

Improveelectricity accumulation capacityVSAvoidlayer structure complexity

Core Design Contradiction:

Quantity of substanceVSDevice complexity

Solution Approach 1:

The hydroxide layer acts as an intermediary between the charging layers and the third oxide semiconductor layer. It facilitates the conversion between electron holes and hydrogen ions during charging and discharging, enabling high electricity accumulation capacity while maintaining a manageable layer structure.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The hydroxide layer performs multiple functions: it stores hydrogen during charging, facilitates ion transport, and enables the conversion between different charge carriers. This multi-functionality allows the battery to achieve high capacity without requiring additional complex components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

This configuration significantly improves energy density and electricity accumulation capacity, enabling a highly reliable secondary battery performance by optimizing hydrogen accumulation and electrical conductivity through the use of nickel hydroxide and oxyhydroxide layers.

Implementation Method 1

a hydroxide layer disposed between the first charging layer and the third oxide semiconductor layer, the hydroxide layer containing a hydroxide of a metal constituting the third oxide semiconductor layer

Methodology Applied

Scientific EffectElectrochemical reactions: Redox Reactions

Data Source

PatentUS11245113B2Secondary battery

Publication Date: 2022.02.08 NIHON MICRONICS KK

AI summary

A secondary battery includes: a first oxide semiconductor having a first conductivity type; a first charging layer disposed on the first oxide semiconductor layer, and composed by including a first insulating material and a second oxide semiconductor having the first conductivity type; a second charging layer disposed on the first charging layer; a third oxide semiconductor layer having a second conductivity type disposed on the second charging layer; and a hydroxide layer disposed between the first charging layer and the third oxide semiconductor layer, and containing a hydroxide of a metal constituting the third oxide semiconductor layer. The highly reliable secondary battery is capable of improving an energy density and increasing battery characteristics (electricity accumulation capacity).