Hierarchical porous ZnMn 2 O 4 derived from cotton substance as high-performance lithium ion battery anode

Micro & nano letters

article

Chenhao Zhao¹  Ye Shen¹  Sheng'en Qiu¹  Zhibiao Hu¹  Kaiyu Liu¹ 

[1] College of Chemistry and Materials Science, LongYan University;Fujian Provincial Key Laboratory of Clean Energy Materials, LongYan University

关键词: electrochemical electrodes;    zinc compounds;    calcination;    porosity;    nanoparticles;    nanoporous materials;    nanofabrication;    adsorption;    desorption;    nitrogen;    current density;    lithium compounds;    secondary cells;    electrochemistry;    cotton substance;    high-performance lithium ion battery anode;    cotton template;    calcination;    nanoparticles;    fibre-like structure;    N2 adsorption-desorption test;    Brunauer-Emmett-Teller surface area;    pore size;    current density;    stable discharge capacity;    electrochemical performances;    hierarchical porous structure;    ion transportation;    structure stability;    ZnMn2O4;    N2;   

DOI  :  10.1049/mnl.2016.0086

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Central neuraxial blocks (CNB) are the preferred blocks in the practice of regional anesthesia. Palpationof the anatomical landmarks is used for the identification of the space, which is not always the bestmethod when CNB is performed in overweight patients or patients having atypical spines like scoliosis.Ultrasound (US) has recently been utilized to facilitate CNB. However, CNB US can be difficult, becausethe structures need to be visualized by US are surrounded by bones, which do not allow ultrasound raysto pass through. Therefore in order to allow deeper penetration, the ultrasound probe used for CNB isa curved probe of low frequency of 2-5 mHz, as it allows deeper penetration at the expense of imageresolution. There are two scanning planes; transverse and longitudinal which supplements each other.US for CNB helps in determining the intercristal line, exact intervertebral level, midline, ideal point ofinsertion, distance to ligamentum flavum and needle trajectory. US for CNB has improved patient safetyby decreasing the number of attempts, chances of dural puncture and damage to conus medullaris. It hasalso improved patient satisfaction and has proved to be an ideal learning tool for the trainees.

【 授权许可】

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