Surface-Charge-Mediated Formation of H-TiO₂@Ni(OH)₂ Heterostructures for High-Performance Supercapacitors

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• 作者：Qingqing Ke ; Cao Guan ; Xiao Zhang ; Minrui Zheng ; Yong-Wei Zhang ; Yongqing Cai ; Hua Zhang and John Wang
• 刊名：Advanced Materials
• 出版年：2017
• 出版时间：February 2, 2017
• 年：2017
• 卷：29
• 期：5
• 全文大小：1737K
• ISSN：1521-4095

文摘

An electrochemically favorable Ni(OH)₂ with porously hierarchical structure and ultrathin nanosheets in a core–shell structure H-TiO₂@Ni(OH)₂ is achieved through modulating the surface chemical activity of TiO₂ by hydrogenation, which creates a defect-rich surface of TiO₂, thereby facilitating the subsequent nucleation and growth of Ni(OH)₂. These configuration-tailored H-TiO₂@Ni(OH)₂ core–shell nanowires exhibit a superior electrochemical performance and good flexibility.