中文摘要：

综述了在微纳米金属钴和钴的化合物制备方面的一些研究进展，介绍了各种不同的制备方法，目前制备钴的氧化物采用最多的方法是水热法和溶剂热法。同时也介绍了金属钴及其氧化物在催化、电化学方面的性能，钴的氧化物也由于其优越的超电容性能在锂电池领域具有很广阔的应用前景。

英文摘要：

The progress on the synthesis of micro-nanometer Co and Co oxide are discussed, and various me- thods are briefly introduced. The most frequent methods employed to synthesize the Co oxide are hydrothermal and sol- vothermal approach. The performance of Co and Co oxide in catalytic and electrochemic field are also introduced. The Co oxide is a promising material in the field of lithium-ion batteries due to its outstanding supercapacitive properties.