Streamer initiation in mineral oil. Part I: electrode surface effect under impulse voltage

2002 ◽  
Vol 9 (1) ◽  
pp. 84-91 ◽  
Author(s):  
O. Lesaint ◽  
T.V. Top
Keyword(s):  
Electrode Surface ◽  
Surface Effect ◽  
Mineral Oil ◽  
Impulse Voltage

scholarly journals Operando surface science methodology reveals surface effect in charge storage electrodes

2020 ◽  
Author(s):  
Chao Wang ◽  
Yanxiao Ning ◽  
Haibo Huang ◽  
Shiwen Li ◽  
Chuanhai Xiao ◽  
...  
Keyword(s):  
Surface Science ◽  
Electrode Surface ◽  
Surface Effect ◽  
Specific Capacity ◽  
Surface Region ◽  
Charge Storage ◽  
Energy Storage Devices ◽  
Graphite Cathode ◽  
Surface And Interface ◽  
Science Methodology

Abstract Surface and interface play critical roles in energy storage devices, calling for operando characterization techniques to probe the electrified surfaces/interfaces. In this work, surface science methodology including electron spectroscopy and scanning probe microscopy has been successfully applied to visualize electrochemical processes at operating electrode surfaces in an Al/graphite model battery. Intercalation of anions together with cations is directly observed in surface region of the graphite electrode with tens of nanometers thickness, whose concentration is amazingly one order higher than that in bulk. An intercalation pseudocapacitance mechanism and a double specific capacity in the electrode surface region are expected based on the super-dense intercalants and anion/cation co-intercalation, which are in sharp contrast with the battery-like mechanism in the electrode bulk. The distinct electrochemical mechanism at electrode surface is well verified by performance tests of real battery devices, showing that surface-dominant nanometer thick graphite cathode outperforms bulk-dominant micrometer thick graphite cathode. Our findings highlight the important surface effect of working electrodes in charge storage systems.

Experimental and theoretical investigation of γ-butyrolactone decomposition on lithium electrode surface. Effect of Li3N layer

2010 ◽  
Vol 59 (3) ◽  
pp. 510-516 ◽  
Author(s):  
O. V. Yarmolenko ◽  
G. Z. Tulibaeva ◽  
G. N. Petrova ◽  
A. F. Shestakov ◽  
N. I. Shuvalova ◽  
...  
Keyword(s):  
Theoretical Investigation ◽  
Electrode Surface ◽  
Surface Effect ◽  
Lithium Electrode

Alternating streamer propagation in mineral oil under bipolar oscillating impulse voltage

2018 ◽  
Vol 25 (7) ◽  
pp. 072125 ◽  
Author(s):  
Heli Ni ◽  
Qiaogen Zhang ◽  
Zhicheng Wu ◽  
Xing Fan ◽  
Xuandong Liu
Keyword(s):  
Mineral Oil ◽  
Impulse Voltage ◽  
Streamer Propagation

scholarly journals Behavior of Biodegradable Oil under Impulse Voltages

2015 ◽  
Vol 785 ◽  
pp. 320-324 ◽  
Author(s):  
Nurul Izzatul Akma Katim ◽  
Mohd Taufiq Ishak ◽  
A.M. Ishak ◽  
M.Z.A.A. Kadir
Keyword(s):  
Breakdown Voltage ◽  
Palm Oil ◽  
Coconut Oil ◽  
Mineral Oil ◽  
Electrical Performance ◽  
Uniform Field ◽  
Testing Methods ◽  
Environmental Compatibility ◽  
Impulse Voltage ◽  
Lightning Impulse

The properties of Palm Oil (PO) and Coconut Oil (CO) offer the potential for transformers with non-toxicity, high fire and flash points and better environmental compatibility while compared with those filled with Mineral Oil (MO). This potential has led to intensive studies of electrical performance of biodegradable oil especially in evaluating the electrical performance under lightning impulse voltage in recent years. This paper presents the investigation on the impulse breakdown voltage of PO and CO in such a uniform field. The PO used in this study is Refined, Bleached and Deodorized Palm Oil (RBDPO) Olein type. Two testing methods, rising-voltage and up-and-down are considered for both oils with different gap distances (2.0 mm and 3.8 mm). Testing methods including rising-voltage method and up-and-down method have no notable influence on the breakdown voltages of RBDPOs and CO compared to MO.

Cellulose Particle Dynamics Tests and Simulation in Mineral Oil under Impulse Voltage

2021 ◽  
Author(s):  
Bo Gao ◽  
Qingping Zhang ◽  
Hairong Luo ◽  
Xuefeng Li ◽  
Yongliang Li
Keyword(s):  
Mineral Oil ◽  
Particle Dynamics ◽  
Impulse Voltage
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