Microwave-Modified Nickel Foam Electrode for Urea Electrolysis
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Solution Overview
Problem
Existing electrodes for electrolyzing urea in animal urine are either too expensive due to precious metals or unsuitable due to oxidation issues with aluminum, lacking a cost-effective and efficient solution for hydrogen production.
Innovation Solution
A porous nickel foam electrode with modified inorganic and/or organic functional groups such as cobalt oxide fluoride, cobalt phosphide, and nickel fluoride is developed, using a microwave-assisted synthesis method to enhance electrolytic efficiency and reduce costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If precious metal electrodes (platinum, iridium, rhodium) are used for electrolyzing urea, then electrolytic efficiency and hydrogen production capability are improved, but manufacturing cost increases significantly
Solution Approach 1:
The patent changes the material composition parameters by replacing precious metals with nickel foam as the base material and adding functional group modifications (cobalt oxide fluoride, cobalt phosphide, hydroxide nickel fluoride, phosphorus). This parameter substitution maintains electrolytic efficiency while dramatically reducing manufacturing cost.
Solution Approach 2:
The patent creates a composite electrode structure combining nickel foam carrier with multiple functional inorganic and organic groups (cobalt oxide fluoride, cobalt phosphide, phosphorus, etc.). This composite approach achieves the catalytic performance previously only attainable with precious metals while using abundant, low-cost materials.
2Ease of manufacture
If aluminum electrodes are used for electrolysis, then manufacturing cost is reduced, but electrode reliability deteriorates due to oxidation problems
Solution Approach 1:
The patent changes the material parameters by selecting nickel foam instead of aluminum, fundamentally altering the electrochemical properties to resist oxidation while maintaining cost-effectiveness. The subsequent functional group modifications further enhance stability and catalytic activity.
Solution Approach 2:
The patent constructs a composite electrode where nickel foam serves as the oxidation-resistant base material, supplemented by functional groups (cobalt oxide fluoride, cobalt phosphide, etc.) that enhance both stability and electrolytic performance, eliminating the oxidation problems of aluminum electrodes.
3Device complexity
If conventional electrolysis methods are used for urea decomposition, then process simplicity is maintained, but hydrogen production efficiency remains low
Solution Approach 1:
The patent changes the electrode material parameters (nickel foam with functional groups) to enhance the electrolysis reaction rate and hydrogen production efficiency, while the overall process remains a straightforward electrolysis operation, maintaining relative simplicity.
Solution Approach 2:
The patent replaces conventional electrode materials with a specifically designed functionalized electrode system that utilizes electrochemical reactions enhanced by the functional groups (cobalt oxide fluoride, cobalt phosphide, etc.), thereby increasing hydrogen production efficiency without adding mechanical complexity.
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 nickel foam electrode effectively oxidizes nitrogen-containing compounds, enabling efficient hydrogen production from urea in animal urine, reducing environmental pollution and providing a cost-effective, renewable energy source.
Implementation Method 1
The electrode for oxidizing nitrogen-containing compounds, the anode of an electrolysis apparatus, effectively oxidizes the nitrogen-containing compounds
Implementation Method 2
electrolyzing, for example, the oxidative decomposition of urea in animal urine to obtain hydrogen
Implementation Method 3
irradiation of the precursor solution containing the nickel foam electrode and precursors in a microwave oven
Data Source
AI summary
The present invention provides a high-performance electrode capable of oxidizing nitrogen-containing compounds prepared by a special microwave method and constructs an electrolysis system and apparatus suitable for oxidizing nitrogen-containing compounds and producing hydrogen and generating electricity by the produced hydrogen; particularly suitable for, but not limited to, recycling large amounts of pig, cattle, or sheep urine in livestock farms. The use of high-performance electrolysis apparatus to decompose the urea in animal urine to obtain hydrogen, then to convert the hydrogen into usable energy for power generation, successfully incorporates livestock waste into electrolysis hydrogen and power generation technology, which not only effectively solves the organic pollution problem, but also produces a clean and environmentally friendly new renewable energy source.