Accelerated formation of strontium silicate by solid-state reaction in NaCl–H2O(v) system at lower temperature

Zhang, Junhao; Qiu, Yushi; Huang, Menglin; Zheng, Hongjuan; Yanagisawa, Kazumichi

doi:10.1016/j.apsusc.2015.04.059

Cited by 5 publications

(1 citation statement)

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“…When the temperature is higher than its melting point, i.e., 801°C, NaCl will melt into a non-aqueous ionic liquid [21], which can offer an ionic environment to enhance the diffusivity of starting materials and prevent the agglomeration into the bulk. Cocoon-like β-CaSiO 3 nanostructure was reported to be prepared by the solid-state reaction in NaCl-H 2 O system [22,23]. Relying on the special functionality of NaCl, we have successfully prepared graphene-like bio-carbon nanosheets by exfoliating the carbon.…”

Section: Introductionmentioning

confidence: 99%

Enhancing kinetics of Li-S batteries by graphene-like N,S-codoped biochar fabricated in NaCl non-aqueous ionic liquid

Huang

Yang

et al. 2018

Sci. China Mater.

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Graphene-like N,S-codoped bio-carbon nanosheets (GNSCS) were prepared by a facile and environment-friendly NaCl non-aqueous ionic liquid route to house sulfur for lithium-sulfur battery. The natural nori powder was calcined at 900°C for 3 h under Ar, in which NaCl non-aqueous ionic liquid can exfoliate carbon aggregates into nanosheets. The structural characterization of GNSCS by a series of techniques demonstrates the graphene-like feature. When evaluated as the matrix for sulfur cathode, GNSCS/S exhibits more prominent cycling stability and rate capability. A discharge capacity of 548 mA h g −1 at a current density of 1.6 A g −1 after 400 cycles was delivered with a capacity fade rate of only 0.13% per cycle and an initial Coulombic efficiency (CE) as high as 99.7%. When increasing the areal sulfur loading up to 3 mg cm −2 , the discharge capacity can still be retained at 647 mA h g −1 after more than 100 cycles with a low capacity degradation of only~0.30% per cycle. The features of N/S dual-doping and the graphene-like structure are propitious to the electron transportation, lithium-ion diffusion and more active sites for chemically adsorbing polysulfides. It is anticipated that other functional biochar carbon can also be attained via the low-cost, sustainable and green method.

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Section: Introductionmentioning

confidence: 99%