Thermal-induced formation of domain structures in CuO nanomaterials

被引：32

作者：

Cao, Fan ^{[1
,2
,3
]}

Jia, Shuangfeng ^{[1
,2
]}

Zheng, He ^{[1
,2
]}

Zhao, Lulu ^{[1
,2
]}

Liu, Huihui ^{[1
,2
]}

Li, Lei ^{[1
,2
]}

Zhao, Ligong ^{[1
,2
]}

Hu, Yongming ^{[3
]}

Gu, Haoshuang ^{[3
]}

Wang, Jianbo ^{[1
,2
,4
]}

机构：

[1] Wuhan Univ, MOE Key Lab Artificial Micro & Nanostruct, Ctr Electron Microscopy, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China

[2] Wuhan Univ, Inst Adv Studies, Wuhan 430072, Hubei, Peoples R China

[3] Hubei Univ, Fac Phys & Elect Sci, Hubei Key Lab Ferro & Piezoelect Mat & Devices, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat, Wuhan 430062, Hubei, Peoples R China

[4] Cent S Univ, Sci & Technol High Strength Struct Mat Lab, Changsha 410083, Hunan, Peoples R China

来源：

PHYSICAL REVIEW MATERIALS | 2017年 / 1卷 / 05期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

LITHIUM-ION BATTERIES; NANOWIRES; GROWTH; NANOSHEETS; COPPER; NANOSTRUCTURES; MECHANISM; MORPHOLOGIES; OXIDATION; DEFECTS;

D O I：

10.1103/PhysRevMaterials.1.053401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The growth mechanisms of CuO nanowires (NWs) via thermal oxidation of copper remain controversial in spite of its extensive exploration. Herein, by effectively tuning the growth conditions, we show that the existence of oxygen-concentration-gradient is crucial to maintain the NW growth. Furthermore, based on the proposed growth mechanism, remarkable CuO nanomaterials, including two-dimensional nanosheets are successfully synthesized at higher temperature (>700 degrees C), at which temperature the growth of CuO nanostructures has been suppressed according to the former reports. Detailed structural investigation reveals that the thermal-induced fast ion diffusion may lead to the self-assembly of individual NWs and the nucleation of novel domain structures, such as the (114) twin structures with zigzag twin boundaries. The two-dimensional NSs with high surface area and novel domain structures may exhibit attractive physical properties, such as the high stiffness, which could be employed as building blocks for sophisticated nanodevices.

引用

页数：7

共 47 条

[1] Room temperature growth of CuO nanorod arrays on copper and their application as a cathode in dye-sensitized solar cells [J].