Capacitive deionization using nitrogen-doped mesostructured carbons for highly efficient brackish water desalination

Xu, Xingtao; Allah, Abeer Enaiet; Wang, Chen; Tan, Haibo; Farghali, Ahmed A.; Khedr, M.H.; Malgras, Victor; Yang, Tao; Yamauchi, Yusuke

doi:10.1016/j.cej.2019.01.098

Cited by 247 publications

(78 citation statements)

References 78 publications

(72 reference statements)

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“…However, due to the fixed carrier frequency, the harmonics which appear at integer multiples of the carrier frequency of TSMC line to line voltage possess discrete and high values and produce powerful EMI. In order to meet the demands of electromagnetic compatibility (EMC), output filter should be adopted, which not only increases the volume and weight but also produces additional harmonics [7][8][9][10][11]. CCMFT is one of the most effective solutions of Carrier Frequency Modulation Technique (CFMT).…”

Section: Introductionmentioning

confidence: 99%

Application Research of Chaotic Carrier Frequency Modulation Technology in Two‐Stage Matrix Converter

Wang

Yong

et al. 2019

Mathematical Problems in Engineering

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The harmonics of line to line voltage in two-stage matrix converter (TSMC) with fixed carrier frequency had discrete and high values and produced powerful electromagnetic interference (EMI). In this paper, chaotic carrier frequency modulation technique (CCFMT) was applied in TSMC for the first time to spread sideband range and suppress harmonic peak value. Although this technique could suppress EMI, it would increase the probability of narrow pulses. In order to improve reliability, the rectifier in the two-stage matrix converter uses PWM modulation with zero vector to extend the zero current commutation time, solves the narrow pulse problem, and simplifies the commutation process. At last, an experiment platform was designed and experimental results showed that harmonics of line to line voltage was efficiently suppressed.

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Section: Introductionmentioning

confidence: 99%

Application Research of Chaotic Carrier Frequency Modulation Technology in Two‐Stage Matrix Converter

Wang

Yong

et al. 2019

Mathematical Problems in Engineering

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“…[15][16][17][18] The CDI technique has distinct merits, such as high desalination efficiency,e asy operation and maintenance,l ow equipment and operating costs,a nd environment friendliness. [19][20][21][22] In general, the performance of CDI in sea waterd esalination is influenced greatly by the capacitance of the electrode material. [23][24][25][26][27][28] Am aterial with large surface area and high capacitance is more favorable for CDI.…”

Section: Introductionmentioning

confidence: 99%

A Polyoxometalate‐Based Binder‐Free Capacitive Deionization Electrode for Highly Efficient Sea Water Desalination

Liu

Zhang

et al. 2020

Chemistry A European J

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Capacitive deionization is a promising technique in sea water desalination. Compared with common electrodes, mixed capacitive‐deionization electrodes exhibit better performance in sea water desalination because they integrate pseudocapacitance and electric double‐layer capacitance in one system. Herein, a 3D binder‐free mixed capacitive‐deionization electrode was fabricated by direct electrodeposition of SiW12O404− and polyaniline on a 3D exfoliated graphite carrier. In this electrode, SiW12O404−/polyaniline composite particles with a size of about 100–120 nm are dispersed homogenously on the 3D exfoliated graphite carrier. Its specific capacitance reaches 352 F g−1 at 1 A g−1. With increasing current from 1 to 20 A g−1, the specific capacitance only decays by 32 %. When employed in sea water desalination, the performance of this mixed capacitive‐deionization electrode is also excellent. At 1.2 V, the salt adsorption capacity of this mixed electrode reaches 23.1 mg g−1 with a salt adsorption rate of 1.38 mg g−1 min−1 in 500 mg L−1 NaCl. The performance of this electrode is well retained after 30 cycles. The excellent sea water desalination performance originates from the synergistic effect between SiW12O404− and polyaniline. This work has developed polyoxometalate as a new material for capacitive‐deionization electrodes.

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“…Whereas activated carbon materials are mostly based on a microporous structure (pore size < 2 nm) other researchers focus on materials with a highly ordered mesoporous structure. Examples are nitrogen-doped mesostructured carbons (Xu et al, 2019a), three dimensional graphene frameworks (Xu et al, 2016a), highly ordered mesoporous carbon nanopolyhedra (Xu et al, 2019c) or carbon spheres with hierarchical micro/mesopores (Xu et al, 2016b). Another approach for CDI electrode materials are carbon-based materials doped by heteroatoms like nitrogen or iron (Xu et al, 2020a).…”

Section: Introductionmentioning

confidence: 99%

New Approach for Investigating Diffusion Kinetics Within Capacitive Deionization Electrodes Using Electrochemical Impedance Spectroscopy

2020

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Capacitive deionization using nitrogen-doped mesostructured carbons for highly efficient brackish water desalination

Cited by 247 publications

References 78 publications

Application Research of Chaotic Carrier Frequency Modulation Technology in Two‐Stage Matrix Converter

Application Research of Chaotic Carrier Frequency Modulation Technology in Two‐Stage Matrix Converter

A Polyoxometalate‐Based Binder‐Free Capacitive Deionization Electrode for Highly Efficient Sea Water Desalination

New Approach for Investigating Diffusion Kinetics Within Capacitive Deionization Electrodes Using Electrochemical Impedance Spectroscopy

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