Mesoporous β-Co(OH)2 nanowafers and nanohexagonals obtained synchronously in one solution and their electrochemical hydrogen storage properties

Progress in Natural Science: Materials International

Lihua Dong¹  Yansheng Yin¹  Shougang Chen²  Jingyuan Fu²  Longqiang Wang²  Xiaoling Liu²  Yue Zhang² 

[1]College of Marine Science & Engineering, Shanghai Maritime University, Shanghai 201306, China

[2]Institute of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China

关键词: β-Co(OH)2;    Nanowafers;    Nanohexagonals;    Electrochemical hydrogen storage;   

DOI  :  10.1016/j.pnsc.2016.11.015

来源: DOAJ

【 摘 要 】

A water/oil two-phase solution strategy has been developed for the synthesis of various β-Co(OH)2 nanostructures. More importantly, two different morphologies of β-Co(OH)2: mesoporous nanowafers and nanohexagons were successfully obtained through one reaction. Furthermore, the special mesoporous of β-Co(OH)2 nanowafers and nanohexagons exhibited excellent electrochemical hydrogen storage capacities and cycling stability. The maximum capacity reached 265.9 and 215.7 mA h g−1 at room temperature, respectively. After 70 cycles, the discharging capacities of the electrode still remain above 218.2 and 175.4 mA h g−1, which indicates that the as-prepared mesoporous β-Co(OH)2 nanowafers have a strong resistance against oxidation and corrosion. These results indicates that the mesoporous β-Co(OH)2 nanowafers and nanohexagons may be potentially applied for electrochemical hydrogen storage.

【 授权许可】

Unknown