Electric potential of a metallic nanowall between cathode and anode planes
Xi-Zhou Qin, Wie-Liang Wang, Zhi-Bing Li
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9 pages, 4 figures Copyright (2011) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. This article appeared in (J. Vac. Sci. Technol. B 29 (2011) 031802) and may be found at (http://link.aip.org/link/?JVB/29/031802)
We obtained the exact expression of the electric potential in the space around a nanowall that is vertically mounted on a planar cathode. The system is designed as a cold field electron emitter or an electron tunneling line scanner. The finite cathode-anode distance has been taking into account. The analytical results are compared with that obtained by the finite- element method.
Flexible, solid electrolyte-based lithium battery composed of LiFePO4 cathode and Li4Ti5O10 anode for applications in smart textiles
在这里,我们报告制造的灵活和可拉伸的电池组成的应变自由LiFePO 4阴极,Li 4 Ti 5 O 10阳极和固体聚环氧乙烷(PEO)电解质作为隔膜层。该电池是从智能纺织品应用的角度开发的。该电池以固体热塑性电解质为关键使能元件,可挤压或拉伸成纤维或细条,直接与智能纺织品制造中使用的编织工艺兼容。本文首先详细介绍了材料的选择,电极和隔膜层的制造和表征。然后组装电池并对其进行表征,最后,将由几个长条制成的大型电池样品编织成织物,用导电线连接,并进行表征。在本文中,我们详细研究了电池设计的两个实际方面:第一是以导电碳和聚合物粘合剂材料的优化比例制备阴极/阳极材料的复合材料,第二是电池性能,包括循环,可逆性和阴极/阳极材料的相容性。最后,当铸造电极和隔膜层时,我们主要关注使用水溶液代替有机溶剂,以使制造过程环境友好。
Electrochemical properties of Na$_{0.66}$V$_4$O$_{10}$ nanostructures as cathode material in rechargeable batteries for energy storage applications
我们报道了Na $_{0.66}$ V $_4$ O $_{10}$纳米结构作为可充电电池阴极材料的电化学性能。室温X射线衍射图的Rietveld精修显示具有C2/m空间群的单斜相。所制备的半电池的循环伏安曲线在~3.1和2.6~V处呈现氧化还原峰,这是由于V $^{5+/4+}$之间的两相转变反应,并且可以归属于Na离子的单步脱嵌/嵌入。我们观察到良好的循环稳定性,在电流密度为3和50 mA g $^{-1}$下,放电比容量(相对于Na $^+$ /Na测量)分别在80($\pm$ 2)和30($\pm$ 2)mAh g $^{-1}$之间。还用Li阳极测试了Na $_{0.66}$ V $_4$ O $_{10}$电极的电化学性能,其显示出比Na更高的容量,但衰减更快。利用密度泛函理论,我们计算了Na空位的形成能;在材料的本体中为3.37~eV,在(100)表面上为2.52~eV,这强调了纳米结构的重要性。
An Effective Strategy to Enable Argyrodite Sulfides as Superb Solid-State Electrolytes: Safeguarding Remarkable Ionic Conductivity and Interfacial Stability with Electrodes