Microwave Hydrothermal Synthesis of Ni-based Metal鈥揙rganic Frameworks and Their Derived Yolk鈥揝hell NiO for Li-Ion Storage and Supported Ammonia Borane for Hydrogen Desorption

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• 作者：Shaofeng Kong ; Ruoling Dai ; Hao Li ; Weiwei Sun ; Yong Wang
• 刊名：ACS Sustainable Chemistry & Engineering
• 出版年：2015
• 出版时间：August 3, 2015
• 年：2015
• 卷：3
• 期：8
• 页码：1830-1838
• 全文大小：596K
• ISSN：2168-0485

文摘

This paper reports fast microwave hydrothermal synthesis of Ni-based metal鈥搊rganic frameworks (Ni-MOFs) and their derived yolk鈥搒hell NiO structures by direct calcination in air. The molar ratio of the Ni ion to the benzene-1,3,5-tricarboxylic acid (H₃BTC) ligand has important influence on the NiO morphologies and their electrochemical performances. The obtained yolk鈥搒hell NiO microsphere displays a large reversible capacity of 1060 mAh g^鈥? at a small current density of 0.2 A g^鈥? and a good high-rate capability when evaluated as an anode for rechargeable lithium-ion batteries. Moreover, the facilitated hydrogen release from ammonia borane (AB) at a lower temperature and the depressed release of undesired volatile byproducts are also observed in the Ni-MOFs supported AB.