基于GaN的β电压核电池与3D接口的性能研究
1College of Mechanical Engineering, Dalian University of Technology, Dalian, Liaoning, 116023, China.
概括
这项研究使用3D接口模型模拟了基于GaN的β电压核电池. 优化的设计与147Pm源显著提高功率密度相比Ni.63相比.
科学领域:
- 材料科学 材料科学 材料科学
- 核工程 核工程是指核工程.
- 半导体物理 半导体物理
背景情况:
- 贝塔电压核电池提供长期的电力解决方案.
- 化 (GaN) 是这些设备的一个有前途的半导体.
- 优化3D接口结构对于性能至关重要.
研究的目的:
- 设计和模拟基于GaN的β电池的3D接口模型.
- 使用不同的放射性源和结构参数预测电池性能.
- 为了比较实际加工过程对电池产量的影响.
主要方法:
- 利用Geant4计算在63Ni和147Pm辐射下GaN中的电子孔对生成率.
- 雇佣了COMSOL多物理,用于电子孔对运输的有限元分析.
- 模拟了结构参数的影响,如倒置金字塔数量和连接深度.
主要成果:
- 模拟显示了不同放射源的显著性能变化 (Jsc,Voc,Pmax).
- 优化的参数 (源63个,特定的兴奋剂,0.1微米的连接深度,25个倒置的金字塔) 产生了Jsc=0.648μA/cm2,Voc=2.3481V,Pmax=1.2949μW/cm2.
- 切换到147Pm源导致Jsc大幅增加到56.865μA/cm2和Pmax到94.975μW/cm2.
结论:
- 放射性源的选择极大地影响了GaNβ电池的性能.
- 与Ni.63相比,Pm提供了显著更高的输出功率密度.
- 3D接口模拟模型为优化betavoltaic设备设计提供了一个有价值的工具.
更多相关视频
10:58Focused Ion Beam Fabrication of LiPON-based Solid-state Lithium-ion Nanobatteries for In Situ Testing
Published on: March 7, 2018
10.1K
10:36Author Spotlight: Optimization of Airflow Velocities in Battery Cooling Systems for Enhanced Thermal Performance and Reduced Energy Consumption
Published on: November 3, 2023
1.4K
相关概念视频
02:47Voltaic/Galvanic Cells
Spontaneous Chemical Reactions
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
03:12Batteries and Fuel Cells
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
01:24Electrochemical Systems
Electrochemical systems provide a fascinating insight into the dynamic interplay of charged species within various phases. One notable example is the interaction between a membrane permeable to K⁺ ions but not to Cl⁻ ions, separating an aqueous KCl solution from pure water. As K⁺ ions diffuse through the membrane, they generate net charges on each phase, leading to a potential difference between them.Similarly, when a piece of Zn is immersed in an aqueous ZnSO₄ solution, the Zn metal, composed...
01:28Electrochemical Cells
Electrochemical cells are systems that convert chemical energy into electrical energy or use electrical energy to drive chemical reactions. They consist of two electrodes in contact with an electrolyte, where redox reactions enable electron transfer. Most electrochemical cells include two half-cells connected by an external wire for electron flow and a salt bridge for ion flow. The salt bridge contains an electrolyte solution and maintains charge neutrality by allowing ions—not electrons—to...