The anode materials Li4-xMgxTi5-xZrxO12（x=0, 0.05, 0.1） were successfully synthesized by sol-gel method using Ti（OCaH9）4, CH3COOLi·2H2O, MgCl2·6H2O and Zr（NO3）3·6H2O as raw materials. The crystall...The anode materials Li4-xMgxTi5-xZrxO12（x=0, 0.05, 0.1） were successfully synthesized by sol-gel method using Ti（OCaH9）4, CH3COOLi·2H2O, MgCl2·6H2O and Zr（NO3）3·6H2O as raw materials. The crystalline structure, morphology and electrochemical properties of the as-prepared materials were characterized by XRD, SEM, cyclic voltammograms （CV）, electrochemical impedance spectroscopy （EIS） and charge-discharge cycling tests. The re- sults show that the lattice parameters of the Mg-Zr doped samples are slightly larger than that of the pure LiaTi5Oi2, and Mg-Zr doping does not change the basic Li4Ti5O2 structure. The rate capability of Li4-xMgxTi5-xZrxO12 （x= 0.05, 0.1） electrodes is significantly improved due to the expansile Li＋ diffusion channel and reduced charge transfer resistance. In this study, Li3.95Mg0.05Ti4.95Zr0.05O12 represented a relatively good rate capability and cycling stability, after 400 cycles at 10 C, the discharge capacity retained as 134.74 mAh·g-1 with capacity retention close to 100%. The excellent rate capability and good cycling performance make Li3.95Mg0.05Ti4.95Zr0.05O12 a promising anode material in lithium-ion batteries.展开更多
Background:Acute lymphoblastic leukemia is a rare hematological malignancy.Pure subdural hemorrhages in a patient with acute lymphoblastic leukemia patient are extremely rare.Case presentation:This case presented acut...Background:Acute lymphoblastic leukemia is a rare hematological malignancy.Pure subdural hemorrhages in a patient with acute lymphoblastic leukemia patient are extremely rare.Case presentation:This case presented acute spontaneous subdural hemorrhage without head trauma at first,and acute lymphoblastic leukemia was diagnosed later.The second time,the patient was admitted with multiple pure subdural hemorrhages in different locations and periods with a history of slight head trauma.Conclusions:Pure subdural hemorrhages can occur in a patient with acute lymphoblastic leukemia.More care would be needed for pure subdural hemorrhages without obvious head trauma,and patients with hematological malignancies should be protected from even mild head trauma.展开更多
文摘The anode materials Li4-xMgxTi5-xZrxO12（x=0, 0.05, 0.1） were successfully synthesized by sol-gel method using Ti（OCaH9）4, CH3COOLi·2H2O, MgCl2·6H2O and Zr（NO3）3·6H2O as raw materials. The crystalline structure, morphology and electrochemical properties of the as-prepared materials were characterized by XRD, SEM, cyclic voltammograms （CV）, electrochemical impedance spectroscopy （EIS） and charge-discharge cycling tests. The re- sults show that the lattice parameters of the Mg-Zr doped samples are slightly larger than that of the pure LiaTi5Oi2, and Mg-Zr doping does not change the basic Li4Ti5O2 structure. The rate capability of Li4-xMgxTi5-xZrxO12 （x= 0.05, 0.1） electrodes is significantly improved due to the expansile Li＋ diffusion channel and reduced charge transfer resistance. In this study, Li3.95Mg0.05Ti4.95Zr0.05O12 represented a relatively good rate capability and cycling stability, after 400 cycles at 10 C, the discharge capacity retained as 134.74 mAh·g-1 with capacity retention close to 100%. The excellent rate capability and good cycling performance make Li3.95Mg0.05Ti4.95Zr0.05O12 a promising anode material in lithium-ion batteries.
文摘Background:Acute lymphoblastic leukemia is a rare hematological malignancy.Pure subdural hemorrhages in a patient with acute lymphoblastic leukemia patient are extremely rare.Case presentation:This case presented acute spontaneous subdural hemorrhage without head trauma at first,and acute lymphoblastic leukemia was diagnosed later.The second time,the patient was admitted with multiple pure subdural hemorrhages in different locations and periods with a history of slight head trauma.Conclusions:Pure subdural hemorrhages can occur in a patient with acute lymphoblastic leukemia.More care would be needed for pure subdural hemorrhages without obvious head trauma,and patients with hematological malignancies should be protected from even mild head trauma.
