Topic
Antimony
About: Antimony is a research topic. Over the lifetime, 11450 publications have been published within this topic receiving 155660 citations. The topic is also known as: Sb & element 51.
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TL;DR: In this paper, the performance of Sn-based negative electrodes in K-ion batteries was investigated and a stable high specific capacity of more than 300 mA h g−1 was achieved.
Abstract: The electrochemical mechanism and performance of Sn-based electrodes are thoroughly studied in K-ion batteries. Low temperature ex situ119Sn Mossbauer spectroscopy combined with first principles calculations provides a clear description of the electrochemical mechanism, identifying the formation of poorly crystalline and/or nanosized KSn at the end of the potassiation of β-Sn. During depotassiation, the formation of the intermediate phase K4Sn9 is established on the basis of DFT and Mossbauer spectroscopy. When tin is associated with antimony in SnSb, a different potassiation path is revealed for tin, with a huge impact on the overall performance. In fact, while the presence of antimony suppresses completely the decomposition of the electrolyte caused by tin particles, the new electrochemical potassiation/depotassiation mechanism drastically reduces the modifications in the local environment and the electrode morphology as evidenced by ex situ and post-mortem SEM analyses. Thanks to the positive impact of the association of tin with antimony, which reduces electrode degradation, a stable high specific capacity of more than 300 mA h g−1 can be achieved for Sn-based negative electrodes in K-ion batteries.
48 citations
TL;DR: The 1989 evaluation on mass A=112 has been reviewed, taking into account all data available before December 1995 as mentioned in this paper, and experimental information is presented from the neutron-rich {sup 112}Tc to the neutrally-deficient {sup112}Cs.
48 citations
Patent•
09 Jun 1977TL;DR: In this paper, an article comprising a polymeric material and coated with a thermochromic paint was presented, where the improvement comprises the addition to the thermochromeic paint of a non-thermochrome compound selected from the group consisting of the sulfates, hydrated sulfates and nitrides of boron, aluminum, tin, lead, arsenic, antimony, bismuth, zinc and phosphorus.
Abstract: An article comprising a polymeric material and coated with a thermochromic paint. The improvement comprises the addition to the thermochromic paint of a non-thermochromic compound selected from the group consisting of the sulfates, hydrated sulfates and nitrides of boron, aluminum, tin, lead, arsenic, antimony, bismuth, zinc and phosphorus; the sulfides and hydrated sulfides of boron, aluminum, bismuth and phoshorus; the oxides and the hydrated oxides of boron, arsenic, antimony and phosphorus and the salts, organic compounds and free acids of the oxyanions of boron, arsenic, antimony and phosphorus.
48 citations
TL;DR: In this article, the electrochemistry and electrodeposition of antimony were investigated on glassy carbon and nickel electrodes in a basic 1ethyl-3methylimidazolium chloride-tetrafluoroborate room temperature ionic liquid.
Abstract: The electrochemistry and electrodeposition of antimony were investigated on glassy carbon and nickel electrodes in a basic 1-ethyl-3-methylimidazolium chloride-tetrafluoroborate room temperature ionic liquid. Cyclic voltammetry results show that Sb(III) may be either oxidized to Sb(V) via a quasi-reversible charge-transfer process or reduced to Sb metal. Diffusion coefficients for both Sb(III) and Sb(V) species were calculated from rotating disc voltammetric data. Analysis of chronoamperometric current–time transients indicates that the electrodeposition of Sb on glassy carbon proceeded via progressive three-dimensional nucleation with diffusion-controlled growth of the nuclei. Raising the deposition temperature results in decreased average radius of the individual nuclei. Dense deposits can be obtained within a deposition temperature range between 30 to 120 °C. Scanning electron microscopy revealed dramatic changes in the surface morphology of antimony electrodeposits as a function of deposition temperature; deposits obtained at 30 °C had a nodular appearance whereas those obtained at 80 and 120 °C consisted of evenly distributed fine polygonal crystals.
48 citations
TL;DR: It is concluded that DDP, antimony potassium tartrate, and arsenite all share a common mechanism of resistance in human cells and that this is due in part to an accumulation defect.
Abstract: Cross-resistance between cisplatin (DDP) and metalloid salts in human cells was sought on the basis that mechanisms that mediate metalloid salt cross-resistance in prokaryotes are evolutionarily conserved. Two ovarian and two head and neck carcinoma cell lines selected for DDP resistance were found to be cross-resistant to antimony potassium tartrate, which contains trivalent antimony. The DDP-resistant variant 2008/A was also cross-resistant to arsenite but not to stibogluconate, which contains pentavalent antimony. A variant selected for resistance to antimony potassium tartrate was cross-resistant to DDP and arsenite. Resistance to antimony potassium tartrate and arsenite was of a similar magnitude (3-7-fold), whereas the level of resistance to DDP was greater (17-fold), irrespective of whether the cells were selected by exposure to DDP or to antimony potassium tartrate. In the resistant sublines, uptake of [3H]-dichloro(ethylenediamine) platinum(II) was reduced to 41-52% of control, and a similar deficit was observed in the accumulation of arsenite. We conclude that DDP, antimony potassium tartrate, and arsenite all share a common mechanism of resistance in human cells and that this is due in part to an accumulation defect.
48 citations