Nanofluid Contact Potential Difference Battery for Microelectronics
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional battery technologies, including chemical batteries and nuclear batteries, face limitations such as short terminal life cycles, frequent recharging needs, incompatibility with electronic systems, corrosion issues, and inefficiencies, which hinder their application in compact, long-life, low-power devices like microelectronic sensors and computing devices.
Innovation Solution
A nanofluid contact potential difference (CPD) battery utilizing low work function electrodes and an inter-electrode gap-filling nanofluid, where thermally-induced Brownian motion drives electron pumping and charge transfer through nanoparticle collisions, enabling efficient electrical power generation from ambient heat sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If chemical batteries are used to provide power for microelectronic devices, then sufficient power output can be achieved, but the battery size becomes much larger than the device it powers
Solution Approach 1:
The patent changes the fundamental operating parameters by using contact potential difference between dissimilar metals instead of chemical reactions, enabling power generation without large amounts of reactive materials. This allows the battery to maintain compact dimensions while providing sufficient power output for microelectronic devices
Solution Approach 2:
The patent replaces the chemical energy conversion system with a physical system based on contact potential difference and electron emission. By using thermally-induced Brownian motion to drive electron pumping between electrodes of dissimilar metals, the system eliminates the need for large chemical reactant reservoirs while maintaining power output
2Use of energy by moving object
If conventional chemical batteries are used, then reasonable energy output can be achieved, but terminal life cycle is short and frequent recharging is required
Solution Approach 1:
The nanofluid CPD battery is self-charging through thermally-induced Brownian motion that continuously drives electron pumping between electrodes. The ambient thermal energy automatically recharges the battery without external intervention, enabling virtually unlimited operational life while maintaining steady energy output
Solution Approach 2:
The patent changes from chemical energy storage with finite capacity to a thermal energy-driven system with continuous operation capability. By using nanofluid particle collisions driven by ambient heat, the system converts waste thermal energy into electrical power indefinitely, eliminating recharging requirements
3Power
If conventional batteries are used in microelectronic devices, then power needs can be met, but the battery is incompatible with electronic systems causing corrosion and erratic current output
Solution Approach 1:
The patent introduces nanofluid-filled gaps as intermediaries between electrodes, replacing direct metal-to-metal contact that causes galvanic corrosion. The nanofluid acts as a non-corrosive medium that enables charge transfer through particle collisions while protecting the electronic system from degradation
Solution Approach 2:
The nanofluid creates an inert environment between electrodes that prevents corrosive chemical reactions. By filling the inter-electrode gap with nanofluid instead of allowing direct contact between dissimilar metals, the system eliminates galvanic corrosion while maintaining electrical functionality
4Duration of action of moving object
If nuclear batteries are used to supply small amounts of power over long periods, then extended operation can be achieved, but efficiency is low and high voltage eliminates many applications
Solution Approach 1:
The patent changes from low-efficiency nuclear decay energy conversion to direct thermal-to-electrical conversion using contact potential difference. By harvesting ambient thermal energy through nanofluid particle motion, the system achieves high conversion efficiency while providing usable voltage levels for practical applications
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 nanofluid CPD battery achieves ultra-long life, stable current generation, and compact size, suitable for microelectronic devices, with the ability to convert thermal energy into electrical power at moderate temperatures, providing a virtually unlimited life battery with high energy efficiency.
Implementation Method 1
charge transfer because of nanofluid particle collisions driven by thermally-induced Brownian motion
Implementation Method 2
The theoretical voltage on the cell is determined by the difference in work functions of the two electrode metals
Implementation Method 3
Ionization in a nanofluid CPD cell is provided by electron pumping (due to intermittent contact charging) of the nanofluid CPD cell
Data Source
AI summary
A nanofluid contact potential difference cell includes a cathode with a lower work function and an anode with a higher work function separated by a nanometer-scale spaced inter-electrode gap containing a nanofluid with intermediate work function nanoparticle clusters. The cathode comprises a refractory layer and a thin film of electrosprayed dipole nanoparticle clusters partially covering a surface of the refractory layer. A thermal power source, placed in thermal contact with the cathode, to drive an electrical current through an electrical circuit connecting the cathode and anode with an external electrical load in between. A switch is configured to intermittently connect the anode and the cathode to maintain non-equilibrium between a first current from the cathode to the anode and a second current from the anode to the cathode.