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Efficient electrode materials, that combine high power and high energy, are the crucial requisites of sodium‐ion batteries (SIBs), which have unwrapped new possibilities in the areas of grid‐scale energy storage. Hard carbons (HCs) are considered as the leading candidate anode materials for SIBs, however, the primary challenge of slow charge‐transfer kinetics at the low potential region (<0.1 V)...
As a new energy technology, microbial desalination cell (MDC) can not only purify the wastewater, but also can produce electricity. It has attracted the attention of researchers in the field of control in recent years. In this paper, the generalized predictive control (GPC) algorithm for MDC is proposed to control the output current. A linear regression model of MDC is identified based on the recursive...
Cu-doped Li4Ti5O12 (Li4 − xCuxTi5O12) materials were synthesized by solid-state method. Cu-doping does not change the crystal structure of Li4Ti5O12 material but increases its lattice constant. The particle size of Li4 − xCuxTi5O12 powders decreases with increasing Cu-doping level. Cu-doping does not change the specific capacity at low current density, but can improve the cycling stability and...
Artificial graphite anode material was modified by coating an amorphous carbon layer on the particle surface via a sol-gel and pyrolysis route. The electrochemical measurements demonstrate that appropriate carbon coating can increase the specific capacity and the initial coulombic efficiency of the graphite material, while excessive carbon coating leads to the decrease in specific capacity. Thick...
Vacuum circuit breaker has advantages of low maintenance cost and high reliability. It reaches the priority in aviation field. This paper focuses on the arc modes of intermediate-frequency (400Hz-800Hz) vacuum arc in commercial-type vacuum interrupters with axial magnetic field (AMF) contacts. With high speed photography in conjunction with voltage-current characteristics, three different arc modes...
Vacuum switch has advantages of small volume, light weight and large capacity of interrupting current. It has superiority in aviation field. In this paper, intermediate frequency(400Hz-800Hz) vacuum arc generating in an improved weil oscillating circuit is studied in cup-type vacuum interrupter with axial magnetic field, upper limit of current interruption, arc voltage and its noise component, anode...
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