Journal ArticleDOI
More Ca 2+ , Less Na + : Increasethe Desalination Capacity and Performance Stability of Na x Ca y CoO 2
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TLDR
In this paper, an asymmetric Faradaic deionization (FDI) device assembled by Ca2+decorated NaxCoO2 (x ≤ 0.71, y ≥ 0.05) as the negative electrode and activated carbon as the positive electrode was developed.Abstract:
Faradaic deionization (FDI) provides an effective solution to respond to the global water crisis. However, the ions intercalation/deintercalation process with multiple redox reactions leads to structural collapse and unstable cyclability. Here, we develop an asymmetrical FDI device assembled by Ca2+-decorated NaxCoO2 (x ≤ 0.71, y ≤ 0.05) as the Faradaic negative electrode and activated carbon as the positive electrode. Na0.27Ca0.03CoO2·0.6H2O was synthesized via a facile sol–gel and chemical oxidation method, which delivered a desalination capacity of 83.5 ± 2.4 mg g–1 and a charge efficiency close to 1, and an inappreciable capacity fading was observed after 50 cycles. It is found that the presence of Ca2+ residing in the face-sharing sites helps to maintain the layered structure and promotes efficient deintercalation of Na+ by anchoring the CoO2 slabs, which results in its unexpected desalination capacity and good cyclability. Moreover, electrochemical quartz-crystal microbalance (EQCM) was successfully...read more
Citations
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Journal ArticleDOI
Long-term electrocatalytic N2 fixation by MOF-derived Y-stabilized ZrO2: insight into the deactivation mechanism
TL;DR: In this paper, a MOF-derived carbon/Y-stabilized ZrO2 nanocomposite (C@YSZ) was used as an efficient electrocatalyst for NRR in 0.1 M Na2SO4.
Journal ArticleDOI
An insight into the promotion effect of Na+/vacancy ordering on desalination performance of NaxCoO2
TL;DR: In this article, an asymmetrical FDI device was developed where NaxCoO2 as the Faradic electrode material and AC act as the Cl-storage electrode material for the first time to explore the effect of Na+/vacancy ordering on desalination performance.
Journal ArticleDOI
A Review of Battery Materials as CDI Electrodes for Desalination
TL;DR: In this paper, a variety of battery materials have been developed due to the urgent demand for energy storage, which increases the choices of CDI electrode materials largely, revealing a bright future of integrating battery materials with CDI technology.
Journal ArticleDOI
Enhanced Desalination Capacity and Stability of Alkylamine-Modified Na0.71CoO2 for Capacitive Deionization
Ruijuan Zhou,Mingyuan Wang,Wenhui Wei,Jiaxuan Li,Yunxiao Tong,Bin Liang,Fuming Chen,Guiwu Liu,Min Luo +8 more
TL;DR: Simultaneously regulating the physical properties and chemical environment of interlayer is a critical need for enhancing the capacity and stability of layered electrode materials in energy and env... as mentioned in this paper,...
Journal ArticleDOI
Revealing the role of the amorphous phase in Na0.74CoO2/C/N composite cathode
TL;DR: In this article, a series of Na0·74CoO2/C/N-based composites were fabricated by sintering the mixtures of ZIF-4(Co) (Co [H2C3N2]2) and Na2CO3.
References
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Journal ArticleDOI
Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder
Dragana Jugović,Miloš Milović,Maja Popović,Vladan Kusigerski,Srečo D. Škapin,Zlatko Rakočević,Miodrag Mitrić +6 more
TL;DR: In this article, the effects of fluorination on the crystal structure, magnetic, and electrochemical properties of the P2-type NaxCoO2 powder were investigated for the first time.
Journal ArticleDOI
Power factor enhancement induced by Bi and Mn co-substitution in NaxCoO2 thermoelectric materials
TL;DR: In this article, the effects of partial substitution of Bi for Na and/or Mn for Co on the thermoelectric properties of polycrystalline Na 0.81 CoO 2 have been systematically investigated.
Journal ArticleDOI
Immobilization of Na Ions for Substantial Power Factor Enhancement: Site-Specific Defect Engineering in Na0.8CoO2
Ping-Han Tsai,M. H. N. Assadi,Tianshu Zhang,Clemens Ulrich,Clemens Ulrich,Thiam Teck Tan,Richard Donelson,Sean Li +7 more
TL;DR: In this article, the authors achieved simultaneous enhancement of the interdependent Seebeck coefficient and electrical conductivity by defect engineering by doping Mg into specific sites of Na0.8CoO2.
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Rearrangement of sodium ordering and its effect on physical properties in the Na x CoO 2 system
TL;DR: In this article, the authors systematically study Raman spectroscopy of cleaved single crystals with Na content and show that Na ordering effect on physical properties of Co-O plane is strong.
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Restoration of long range order of Na ions in NaxCoO2 at high temperatures by sodium site doping
TL;DR: In this paper, the Na x CoO 2 system doped with Cu, Y, Sn, W, Au and Bi for x ǫ = 0.5, 0.75 and 1.00 using density functional theory.