| La(OH)3负载锌铝水滑石的制备及其应用在锌镍二次电池中的性能 | |
| La(OH)3 Loaded Zinc Aluminum Hydrotalcite: Preparation and Performance for Zinc Nickel Secondary Battery | |
| 摘要: 采用共沉淀法将氢氧化镧（La（OH）3）负载在锌铝水滑石（Zn-Al LDHs）的表面，扫描电镜（SEM）、X射线衍射（XRD）表明La（OH）3成功负载在锌铝水滑石表面，并且负载后的锌铝水滑石仍然为六边形片状晶体，且粒径均匀、分散性好。La（OH）3质量负载量为5%的锌铝水滑石（5% La（OH）3@Zn-Al LDHs）的电化学性能最佳，循环伏安（CV）、Tafel曲线、电化学阻抗图谱（EIS）表明其具有较好的可逆性、更大的正腐蚀电位及较小的电池内阻。5% La（OH）3@Zn-Al LDHs在经过80次循环后，其循环保持率为94.84%。 | |
| 关键词: 负载 Zn-Al LDHs Zn-Ni二次电池 La(OH)3 | |
| 基金项目: 国家自然科学基金（No.51774160）、国家重点研发计划（No.2019YFC1907900）、云南省万人计划（No.YNWR-QNBJ-2018-327）、云南省科技人才和平台计划项目（No.2017HA012）和昆明理工大学分析测试基金（No.2020M20192202092）资助。 | |
| Abstract: Lanthanum hydroxide (La(OH)3) was loaded on the surface of zinc-aluminum hydrotalcite (Zn-Al LDHs) by co precipitation method. The X-ray diffraction (XRD) patterns and scanning electron microscopy (SEM) images reveal that the La(OH)3 was successfully loaded on the surface of the Zn-Al LDHs, and the loaded Zn-Al LDHs still showed hexagonal plate-like crystals with uniform particle size and good dispersion; 5%La(OH)3@Zn-Al LDHs had the best electrochemical performance. Cyclic voltammetry (CV), Tafel polarization curves and electrochemical impedance spectroscope (EIS) showed that it had better reversibility, larger positive corrosion potential and lower resistance. 5%La(OH)3@Zn-Al LDHs showed the cycle retention of 94.84% after 80 cycles. | |
| Keywords: load Zn-Al LDHs Zn-Ni secondary battery La(OH)3 | |
| 投稿时间：2020-07-17 修订日期：2021-03-16 | |
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| 吴占新,屈亚松,俞小花,谢刚,张文之,崔鹏媛,李永刚.La(OH)3负载锌铝水滑石的制备及其应用在锌镍二次电池中的性能[J].无机化学学报,2021,37(5):778-784. | |
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