可伸缩和耐用的基于纤维素的细菌热电池,具有改善的热电密度,用于低度的热收获
Zhuotong Wu1, Baoxiu Wang2, Jing Li3
1College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, People's Republic of China.
Nano letters
|November 13, 2023
概括
这项研究开发了细菌纤维素凝热电池 (GTC),以有效地将低温热转化为电力. 这种新的设计显著提高了离子导电性和机械强度,用于实际的绿色能源应用.
科学领域:
- 材料科学 材料科学 材料科学
- 可再生能源可再生能源是可再生能源.
- 电化学 电化学 电化学
背景情况:
- 低级热量是丰富的,但未得到充分利用.
- 凝状态热电池 (GTC) 提供了直接将热能转化为电能的潜力.
- 现有的GTC具有较低的离子导电性和不良的机械稳定性,限制了它们的应用.
研究的目的:
- 设计一种基于细菌纤维素 (BC) 的网络,以提高GTC的性能.
- 为了提高GTC的热力和机械性能.
- 创建一个耐用和高效的系统,以收集低质量的热量.
主要方法:
- 细菌纤维素 (BC) 纳米纤维-宏分子纠网络的制造.
- 将BC网络集成到凝状态热电池 (GTC) 中.
- GTCs的Seebeck系数,离子导电率和输出功率密度的表征.
主要成果:
- 开发的BC-GTC表现出3.84 mV K-1的Seebeck系数和108.5 mS cm-1的离子导电性.
- 实现了高特异性输出功率密度为1760μW m-2 K-2,超过了现有的大部分文献.
- 15个相互连接的BC-GTC单元在65K的温度梯度下产生3.35V,为电子设备供电.
结论:
- 基于BC的网络有效地平衡了GTC中的热力和机械性能.
- 这种方法为开发高性能,持久的GTC提供了有希望的途径,以实现可持续的能源采集.
- 改进的GTC显示了使用环境热来供电低功耗电子设备的实际潜力.
相关概念视频
Hyperthermophilic Bacteria
Domain Bacteria includes some unique hyperthermophilic species. They exhibit remarkable adaptations that enable survival in extreme environments.Thermotoga species are rod-shaped, gram-negative, non-sporulating hyperthermophiles that form a sheath-like envelope called a toga. They ferment sugars or starch, producing lactate, acetate, CO₂, and H₂, and can also grow via anaerobic respiration using H₂ and ferric iron. Found in hot springs and hydrothermal vents, over 20% of their genes show strong...
Microbial Fuel Cells
Microbial fuel cells (MFCs) are bioelectrochemical devices that generate electricity by exploiting the metabolic processes of electrogenic bacteria. These systems provide a renewable energy source and serve as an innovative method for treating organic waste, such as wastewater.A typical MFC consists of two chambers: an anoxic (oxygen-free) compartment that houses the bacteria and an oxic (oxygen-rich) compartment that contains oxygen as the terminal electron acceptor. Many MFCs use proton...


