High specific capacity Mg-doping LiNi 1/3 Mn 1/3 Co 1/3 O 2 cathode materials synthesised by a simple stepwise co-precipitation method

Micro & nano letters

article

Jiping Zhu¹  Jiawei Yan¹  Lei Zhang¹ 

[1] School of Materials Science and Engineering, Hefei University of Technology

关键词: X-ray chemical analysis;    crystal structure;    electrochemical impedance spectroscopy;    X-ray diffraction;    powders;    lithium compounds;    scanning electron microscopy;    electrochemical electrodes;    doping;    precipitation;    secondary cells;    magnesium;    crystal structure;    electrochemical characterisation;    optimal cycling performance;    capacity loss;    electrochemical performance;    capacity retention;    X-ray diffraction;    XRD;    SEM;    EDS;    electrical impedance spectroscopy tests;    modified cathode materials;    LiNi1/3Mn1/3Co1/3O2 cathode materials;    powder;    charge/discharge test;    stepwise co-precipitation method;    energy dispersive spectrometer mapping;    scanning electron microscopy;    voltage 2.5 V to 4.3 V;    temperature 0.2 C;    temperature 8 C;    LiNi0.33Mn0.33Co0.33O2Mg;   

DOI  :  10.1049/mnl.2018.5011

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Sage (Salvia officinalis), belong to Labiatae family is indigenous to Iraq and other Mediterranean areas but now cultivated world- wide, principally for its use as culinary herb. In the present study preliminary screening for the important phytochemical natural product groups indicated the presence of flavonoid, saponin, hyrolysable and condensed tannin groups. The antibacterial  activity of two concentrations 10 mg/ml and 100 mg/ml of chloroform and hydroalcoholic extracts from  Salvia officinalis leaves was evaluated against four strains of gram negative bacteria (Escherichia coli,  Pseudomonas arigenossa,  Klebsiella pneumonia, and  Proteus spp) and two strains of gram positive bacteria (Staphylococcus aureus,  Bacillus cerus) using agar well diffusion method. Chloroform extract 100mg/ml was found active against two types of bacteria, Staphylococcus aureus with MIC of 90 mg/ml and Proteus spp with MIC of 80 mg/ml. Bioassay guided separation using TLC led to the separation of 6 constituents from the active extract, one of them was identified as thujone.

【 授权许可】

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