中文摘要：

通过简单的热分解前驱化合物的方法制备了多孔氧化镍纳米颗粒,产物由具有多孔的纳米颗粒组成.通过循环伏安和恒流充放电技术表征了多孔氧化镍纳米颗粒电极的电化学性能.结果显示多孔氧化镍纳米颗粒展现出优异的电化学性能：高的比容量、循环性能以及倍率性能.500mA/g电流密度下循环120圈,其比容量能保持在835 mA h/g.多孔结构的引入增加了电极和电解液之间的接触面积,同时提供空间来缓解循环过程中引起的体积膨胀效应,从而提高了电化学性能.

英文摘要：

Porous NiO nanoparticles were synthesized via a facile thermal decomposition method by only using a simple compound precursor. The as-prepared NiO samples are composed of nanoparticles with large pore volume. The electrochemical properties of the porous NiO nanopartieles were examined by cyclic voltammetry and galvanostatic charge-discharge studies. The results demonstrate that the as-prepared NiO nanoparticles are excellent electrode materials in LIBs（lithium ion batteries） with high specific capacity, good retention and rate performance. The porous NiO nanopartieles can retain a reversible capacity of 835 mAh/g after 120 cycles at a high current density of 500 mA/g. The introduction of porous structure into the NiO electrodes offers a large contact area between the electrode and electrolyte, and provides space for buffering the strain during cycling, thus leading to enhanced lithium-storage properties.