Effect of N atoms in the backbone of metal phthalocyanine derivatives on their catalytic activity to lithium battery
摘要:
Metal phthalocyanine (MPc, M = Mn2+, Fe2+, Co2+, Ni2+ and Cu2+). metal tetrapyridinoporphyrazine, and metal tetrapyrazinoporphyrazine are synthesized by microwave reaction and characterized by elemental analyzer, IR spectroscopy and UV-vis spectroscopy. The catalytic activity of MPc derivatives to Li/SOCl2 battery is evaluated by the relative discharge energy of the battery whose electrolyte contains the compounds. The discharge energy of Li/SOCl2 battery catalyzed by MPc is approximately 0-61% higher than that of Li/SOCl2 battery in the absence of compounds, depending on the central metal ion. To the same central metal ion, the discharge energy of Li/SOCl2 battery catalyzed by MTAP is approximately 60% higher than that by MPc. The discharge energy of Li/SOCl2 battery in which SOCl2 contains MPTpz is approximately 17-19% higher than that of the battery in the absence Of compounds, and almost independent of central metal ions. It shows a correlation existing between the Structure and the catalytic active sites of MPc derivatives. The double active site model is proposed to interpret the results. (C) 2009 Elsevier B.V. All rights reserved.
Effect of N atoms in the backbone of metal phthalocyanine derivatives on their catalytic activity to lithium battery
摘要:
Metal phthalocyanine (MPc, M = Mn2+, Fe2+, Co2+, Ni2+ and Cu2+). metal tetrapyridinoporphyrazine, and metal tetrapyrazinoporphyrazine are synthesized by microwave reaction and characterized by elemental analyzer, IR spectroscopy and UV-vis spectroscopy. The catalytic activity of MPc derivatives to Li/SOCl2 battery is evaluated by the relative discharge energy of the battery whose electrolyte contains the compounds. The discharge energy of Li/SOCl2 battery catalyzed by MPc is approximately 0-61% higher than that of Li/SOCl2 battery in the absence of compounds, depending on the central metal ion. To the same central metal ion, the discharge energy of Li/SOCl2 battery catalyzed by MTAP is approximately 60% higher than that by MPc. The discharge energy of Li/SOCl2 battery in which SOCl2 contains MPTpz is approximately 17-19% higher than that of the battery in the absence Of compounds, and almost independent of central metal ions. It shows a correlation existing between the Structure and the catalytic active sites of MPc derivatives. The double active site model is proposed to interpret the results. (C) 2009 Elsevier B.V. All rights reserved.
Effect of N atoms in the backbone of metal phthalocyanine derivatives on their catalytic activity to lithium battery
摘要:
Metal phthalocyanine (MPc, M = Mn2+, Fe2+, Co2+, Ni2+ and Cu2+). metal tetrapyridinoporphyrazine, and metal tetrapyrazinoporphyrazine are synthesized by microwave reaction and characterized by elemental analyzer, IR spectroscopy and UV-vis spectroscopy. The catalytic activity of MPc derivatives to Li/SOCl2 battery is evaluated by the relative discharge energy of the battery whose electrolyte contains the compounds. The discharge energy of Li/SOCl2 battery catalyzed by MPc is approximately 0-61% higher than that of Li/SOCl2 battery in the absence of compounds, depending on the central metal ion. To the same central metal ion, the discharge energy of Li/SOCl2 battery catalyzed by MTAP is approximately 60% higher than that by MPc. The discharge energy of Li/SOCl2 battery in which SOCl2 contains MPTpz is approximately 17-19% higher than that of the battery in the absence Of compounds, and almost independent of central metal ions. It shows a correlation existing between the Structure and the catalytic active sites of MPc derivatives. The double active site model is proposed to interpret the results. (C) 2009 Elsevier B.V. All rights reserved.
Graphite nanosheets doped with Fe, Ni, and N, synthesized in one step, and their unique magnetic performance
作者:Zhanwei Xu、Hejun Li、Huijuan Luo、Huihui Sun、Qinglin Zhang、Gaoxiang Cao、Kezhi Li
DOI:10.1016/j.ssc.2011.01.020
日期:2011.4
Graphite nanosheets (GNs) doped with N, Fe, or Ni were synthesized by pyrolysis of metal tetrapyridinoporphyrazine (MPTpz, M = Fe2+, and Ni2+) and a mixture of MPTpzs in a chemical vapor deposition furnace. The products obtained were characterized by scanning and transmission electron microscopy, and X-ray photoelectron spectroscopy. The magnetic properties of the GNs obtained were investigated at room temperature using a vibrating sample magnetometer with an applied field of -10 000-10 000 Gs. The results show the GNs obtained are terrace-like and ultra-thin, with very high aspect ratio. Fe, Ni and N atoms have been doped to the GNs successfully. There are two types of N atom that are introduced into pure carbon systems: pyrinidic and graphitic N atoms. The GNs obtained exhibit ferromagnetic behavior at room temperature. Sample S1, obtained by pyrolysis of a mixture of MPTpzs (M = Fe2+ and Ni2+), have the highest coercivity force. The saturation magnetization (M-s), remanent magnetization (M-r), and coercivity (H-c) values of sample Si are 24.51 emu g(-1) 3.95 emu g(-1) and 207.34 Gs, respectively. (C) 2011 Elsevier Ltd. All rights reserved.