无机材料学报 ›› 2021, Vol. 36 ›› Issue (1): 69-74.DOI: 10.15541/jim20200180

• 研究论文 • 上一篇    下一篇

用CuCl2为铜源高效制备形貌可控CuGeO3的研究

肖昱旻1,李彬1,覃礼钊1(),林华1,李庆1,廖斌2   

  1. 1. 西南大学 材料与能源学院, 重庆 400715
    2. 北京师范大学 核科学与技术学院, 北京 100875
  • 收稿日期:2020-04-03 修回日期:2020-05-04 出版日期:2021-01-20 发布日期:2020-06-09
  • 作者简介:肖昱旻(1995-), 女, 硕士研究生. E-mail: x20172504@email.swu.edu.cn
  • 基金资助:
    中央高校基础研究经费(XDJK2019D004);广东省重点领域研发计划(2019B090909002);国家自然科学基金联合基金重点项目(U1865206);国防科技重点实验室基金(614220207011802)

Efficient Preparation of CuGeO3 with Controllable Morphology Using CuCl2 as Copper Source

XIAO Yumin1,Li Bin1,QIN Lizhao1(),LIN Hua1,LI Qing1,LIAO Bin2   

  1. 1. Faculty of Materials & Energy, Southwest University, Chongqing 400715, China;
    2. College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China
  • Received:2020-04-03 Revised:2020-05-04 Online:2021-01-20 Published:2020-06-09
  • About author:XIAO Yumin(1995-), female, Master candidate. E-mail: x20172504@email.swu.edu.cn
  • Supported by:
    Fundamental Research Funds for the Central Universities(XDJK2019D004);Guangdong Province Key Area R&D Program(2019B090909002);National Natural Science Foundation Joint Fund Key Project(U1865206);National Defense Science and Technology Key Laboratory Fund(614220207011802)

摘要:

锗酸铜因具有自旋佩尔斯效应以及优异的储锂性能而受到广泛关注, 普遍采用水热法制备锗酸铜。在制备过程中, 利用Cu(CH3COO)2等弱酸盐促进水的电离来获取CuGeO3生长所需的OH -, 这种操作方法虽然简单, 但制备时间长、效率低。本研究采用强酸盐CuCl2取代弱酸盐Cu(CH3COO)2为铜源, 调节前驱体溶液的pH, 控制各晶面吸附能力及溶液过饱和度, 实现高效制备CuGeO3纳米棒和CuGeO3六边形纳米片, 将制备时间缩短至8 h。并在此基础上, 添加一维结构导向剂乙二胺, 在加速反应过程的同时限制CuGeO3的二维平面生长, 高效制备了100 nm、200~300 nm、350~500 nm、400~700 nm、1~2 μm和 1~3 μm六种不同尺寸、形貌均一的CuGeO3纳米线。

关键词: CuGeO3纳米线, CuCl2, 水热法, 形貌控制

Abstract:

Copper germanate has attracted wide attention because of its spin-Peierls transition and excellent lithium storage performance. Typical hydrothermal method uses weak acid salts such as Cu(CH3COO)2 to promote the ionization of water to obtain OH - required for the growth of CuGeO3. Although the operation is facile, the reaction time is long and the efficiency is low. In this work, CuCl2 was used as the copper source instead of Cu(CH3COO)2 and the pH of precursor solution was adjusted to control the adsorption capacity of each crystal plane and the supersaturation of the solution, so as to achieve efficient preparation of CuGeO3 nanorods and CuGeO3 hexagonal nanosheets, effectively shortening the reaction time to 8 h. Based on this, one-dimensional structure-directing agent ethylenediamine was added to accelerate the reaction process while limiting the two-dimensional planar growth of CuGeO3, and six different sizes ( 100 nm, 200-300 nm, 350-500 nm, 400-700 nm, 1-2 μm and 1-3 μm) of uniform CuGeO3 nanowires were efficiently prepared.

Key words: CuGeO3 nanowires, CuCl2, hydrothermal method, morphology controlled

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