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Non-Equilibrium Cold Atmospheric Pressure Discharges
Published in Alexander Fridman, Lawrence A. Kennedy, Plasma Physics and Engineering, 2021
Alexander Fridman, Lawrence A. Kennedy
Principal concepts and physical effects regarding the atmospheric pressure glow discharges were already discussed in Section 7.5.6. Such discharges can be effectively organized in a DBD configuration. In this case the key difference is related to using only special gases, for example, helium. The atmospheric pressure glow DBD modification permits arranging the barrier discharge homogeneously without streamers and other spark-related phenomena. Practically it is important that the glow modification of DBD can be operated at much lower voltages (down to hundreds volts) with respect to those of traditional DBD conditions. A detailed explanation of the special functions of helium in the atmospheric pressure glow discharge is not known. However it is clear that these are related mostly to the following effects. First, it is related to the high electronic excitation levels of helium and the absence of electron energy losses on vibrational excitation. This leads to high values of electron temperatures at lower levels of the reduced electric field. To see this effect compare the reduced electric fields necessary to sustain glow discharges in inert and molecular gases, shown in Figures 7.12 and 7.13. Second, it is related to heat and mass transfer processes that are relatively fast in helium. This prevents contraction and other instability effects in the glow discharge at high pressures. One can state that streamers are overlapping in this case. The same processes can be important in preventing the generation of space-localized streamers and sparks. An important role in avoiding narrow streamers is played by the “memory effect”; this is the influence of particles generated in a previous streamer on a subsequent streamer. The memory effect can be related to metastable atoms and molecules and to electrons deposited on the dielectric barrier, see S. Kanazawa, M. Kogoma, T. Moriwaki, S. Okazaki, 1988; B. Lacour, C. Vannier, 1987; Y. Honda, F. Tochikubo, T. Watanabe, 2001.
Efficient energy flow criteria of hybrid solar battery packs grid for electric vehicle rapid-charging facility
Published in International Journal of Ambient Energy, 2023
Zeeshan A. Arfeen, Md Pauzi Abdullah, Usman Ullah Sheikh, Abubakar Siddique, Abdur Raheem, Mehreen Kausar
The energy store device serves to raise the network resiliency by taking extra energy during surfeit energy production or transporting it to the consumer during deficient energy times (Bhosale and Agarwal 2018). The main contribution of the ESS is to recompense for the intermittent behaviour of the solar, thus backing the stability of the bus voltage and raising the whole system reliability (Maharjan et al. 2008). It is used for peak shaving of power at peak hours, which supports in minimising the network-operating price. In comparison with other conventional batteries, lithium-ion battery rapidly charges with elite power/energy density (Fergus 2010; Saad, Alam, and Murugesan 2022) with long lifetimes and does not show any memory effect. It operates normally at room temperature and is famous for its small structure. Contemporary Li-ion batteries have been disclosed to go beyond three thousand full discharge cycles (Leadbetter and Swan 2012). It is intrinsically safe from an environmental effect and high open-circuit voltage.
The high performances of SiO2-coated melt-blown non-woven fabric for lithium-ion battery separator
Published in The Journal of The Textile Institute, 2018
Chune Zhang, Wei Tian, Dandan Li, Lijun Quan, Chengyan Zhu
With the emergence of such problems as environmental pollution and energy consumption, lithium-ion battery which has advantages of high specific energy, long cycle life, no memory effect, safe, reliability, and fast charge and discharge (Yang et al., 2015), it is now widely used in electronic products such as cameras, electric tools and video cameras (Xiao et al., 2015). Lithium-ion battery separator is one of the important part of lithium-ion battery, it can effectively prevent short circuit of the positive and negative of lithium-ion battery which is caused by direct contact, and it allows lithium-ion to move freely during charge and discharge (Wu et al., 2015). At present, the materials of lithium-ion battery separator are mainly polyolefin materials which are prepared by dry process or wet process, but they exist the disadvantages of low porosity and electrolyte uptake, transverse tensile strength and thermal stability (Liu et al., 2015). If lithium-ion batteries are used in abnormal conditions, such as over charge/discharge or short circuit, the local temperature of lithium-ion battery separator will be too high and reaches its melt temperature which makes security problems as fire and explosion of lithium-ion battery due to the shrinkage of lithium-ion battery separator (Gor, Cannarella, Leng, Vishnyakov, & Arnold, 2015).
Analysis of Li distribution in ultrathin all-solid-state Li-ion battery (ASSLiB) by neutron depth profiling (NDP)
Published in Radiation Effects and Defects in Solids, 2020
I. Tomandl, J. Vacik, T. Kobayashi, Y. Mora Sierra, V. Hnatowicz, V. Lavreniev, P. Horak, G. Ceccio, A. Cannavo, M. Baba, R. Ye
A lithium-ion battery (LiB) is a type of a rechargeable battery system that exhibits one of the best energy-to-weight ratios, high open circuit voltage, no memory effect and low self-discharge (1). It represents a promising energy storage technology that is gaining in popularity in consumer electronics and elsewhere. With advances in nanotechnology, new nanostructured materials can be utilised to construct LiB. They permit a high contact area of the active materials and shorten the ion diffusion path, which increase the LiB system’s performance.