Co替代Ni对汽车电池用La0.8Mg0.2Ni3.8-x Co x 储氢合金电化学性能的影响
收稿日期: 2023-12-30
网络出版日期: 2024-11-27
基金资助
江苏省“333工程”科研项目项目(BRA2020315)
Effect of Co replacing Ni on electrochemical performance of La0.8Mg0.2Ni3.8-x Co x hydrogen storage alloy for automotive batteries
Received date: 2023-12-30
Online published: 2024-11-27
采用磁悬浮熔炼炉制备了铸态La0.8Mg0.2Ni3.8-x Co x 储氢合金，研究了Co含量对La0.8Mg0.2Ni3.8-x Co x 储氢合金相结构和电化学性能的影响。结果表明，不同Co含量的La0.8Mg0.2Ni3.8-x Co x 储氢合金主要由LaNi5相、Ce5Co19相、Pr5Co19相和CeNi2相组成，La0.8Mg0.2Ni3.8-x Co x 储氢合金中x值增大（Co含量增加）会促使Ce5Co19相向Pr5Co19相转变，且当x=1.05时储氢合金中LaNi5相含量最小。随着x值增大，储氢合金的放氢平台先减小后增大、最大储氢量先增大后减小、第100次充放电后的容量保持率（S100）先增大后减小，当x=0.15时储氢合金的最大放电容量和S100取得最大值，分别为352.39 mA·h/g和81.29%。随着La0.8Mg0.2Ni3.8-x Co x 储氢合金中x值从0.65增加至2.25，储氢合金电极的交流阻抗逐渐增大，交换电流密度逐渐减小，氢扩散系数先增大后减小并在x=1.05时取得最大值，电流密度为300、600、900 mA/g时的高倍率放电性能均逐渐减小。结果表明，交换电流密度是决定La0.8Mg0.2Ni3.8-x Co x 储氢合金电极高倍率放电性能的关键因素。
关键词： Co含量; La0.8Mg0.2Ni3.8-x Co x 储氢合金; 相结构; 微观形貌; 电化学性能
彭卫锋 , 施卫 . Co替代Ni对汽车电池用La0.8Mg0.2Ni3.8-x Co x 储氢合金电化学性能的影响[J]. 无机盐工业, 2024 , 56(11) : 65 -71 . DOI: 10.19964/j.issn.1006-4990.2023-0625
As-cast La0.8Mg0.2Ni3.8-x Co xhydrogen storage alloy was prepared by magnetic levitation melting furnace，the effect of Co content（x=0.65~2.25） on the phase structure and electrochemical performance of hydrogen storage alloy were studied.The results showed that the phases of hydrogen storage alloys with different Co contents were mainly LaNi5，Ce5Co19，Pr5Co19 and CeNi2 phase.The increase of x value（Co content） in La0.8Mg0.2Ni3.8-x Co x hydrogen storage alloy promoted the transformation of Ce5Co19 phase to Pr5Co19 phase，and the LaNi5 phase content in the hydrogen storage alloy was the smallest when x=1.05.As the value of x increased，the hydrogen release platform of the hydrogen storage alloy was firstly decreased and then increased，and the maximum hydrogen storage capacity was firstly increased and then decreased.The capacity retention rate （S100） after the 100th charge and discharge was firstly increased and then decreased.When x=0.15，the hydrogen storage alloy obtained the maximum values of Cmax and S100，which were 352.39 mA·h/g and 81.29% respectively.With the increase of x value from 0.65 to 2.25，the AC impedance of hydrogen storage alloy electrodes was gradually increased，and the exchange current density was gradually decreased.The hydrogen diffusion coefficient was firstly increased and then decreased，and reached its maximum value at x=1.05.The high rate discharge performance was gradually decreased at current densities of 300，600，and 900 mA/g.The results indicated that the exchange current density was the key factor determining the high rate discharge performance of La0.8Mg0.2Ni3.8-x Co x hydrogen storage alloy electrodes.
| 1 | 杨天辉，刘力，周曦，等.汽车电池用无镁储氢合金的合金化与电化学性能［J］.实验室研究与探索，2022，41（12）：57-62. |
| YANG Tianhui， LIU Li， ZHOU Xi，et al.Alloying and electrochemical properties of magnesium free hydrogen storage alloys for automotive batteries［J］.Research and Exploration in Laboratory，2022，41（12）：57-62. | |
| 2 | 李志强，郭正华，何玉汝.Zr/Mn元素替代及退火处理对汽车电池用储氢合金电化学性能的影响［J］.无机盐工业，2023，55（6）：78-84. |
| LI Zhiqiang， GUO Zhenghua， HE Yuru.Effect of Zr/Mn element substitution and annealing treatment on electrochemical properties of hydrogen storage alloys for automotive batteries［J］.Inorganic Chemicals Industry，2023，55（6）：78-84. | |
| 3 | 李通，罗新宇，陈子然.退火温度对汽车镍氢电池用储氢合金电化学性能的影响［J］.稀土，2022，43（5）：93-101. |
| LI Tong， LUO Xinyu， CHEN Ziran.The effect of annealing temperature on the electrochemical performance of hydrogen storage alloys for automotive nickel hydrogen batteries［J］.Chinese Rare Earths，2022，43（5）：93-101. | |
| 4 | ZHAI Tingting， YUAN Zeming， HU Feng，et al.Structure and hydrogen storage properties of La1- x Pr x MgNi3.6Co0.4（x=0-0.4） alloys prepared by melt spinning［J］.International Journal of Hydrogen Energy，2019，44（56）：29590-29596. |
| 5 | 侯晓东，邓安强，赵刘强，等.Co元素对La-Y-Ni系A2B7型储氢合金的微观结构及电化学性能的影响［J］.金属功能材料，2021，28（6）：1-8. |
| HOU Xiaodong， DENG Anqiang， ZHAO Liuqiang，et al.Effect of Co element on the microstructure and electrochemical properties of La-Y-Ni based A2B7-type hydrogen storage alloys［J］.Metallic Functional Materials，2021，28（6）：1-8. | |
| 6 | 董振伟，熊海岩，石仪超，等.复相La-Mg-Ti-Ni-Co基AB3型储氢合金的相结构与电化学性能衰退机理研究［J］.化工新型材料，2019，47（7）：174-177，182. |
| DONG Zhenwei， XIONG Haiyan， SHI Yichao，et al.Study on phase structure and electrochemical performance degradation me-chanism of multiphase La-Mg-Ti-Ni-Co based AB3 type hydrogen storage alloy［J］.New Chemical Materials，2019，47（7）：174-177，182. | |
| 7 | 潘富健.Nd/Co元素及荷电态对La-Y-Ni系AB3.53.8型储氢合金结构及电化学性能的影响［D］.兰州：兰州理工大学，2021. |
| PAN Fujian.Effect of Nd/Co element and state of charge on the structure and electrochemical properties of La-Y-Ni AB 3.5-3.8 hydrogen storage alloys［D］.Lanzhou：Lanzhou University of Technology，2021. | |
| 8 | 邵光俭，王克乐.成分对汽车用（La0.7Mg0.3）Nix合金储氢特性的影响［J］.无机盐工业，2021，53（9）：51-56. |
| SHAO Guangjian， WANG Kele.Effect of composition on hydrogen storage characteristics of（La0.7Mg0.3）Ni x alloy for vehicle［J］.Inorganic Chemicals Industry，2021，53（9）：51-56. | |
| 9 | 肖冬玲，郭飞，李强.Ni/Co比对La0.8Mg0.2（Ni，Co）3.8储氢合金性能的影响［J］.电池，2023，53（2）：191-195. |
| XIAO Dongling， GUO Fei， Li Qiang.The effect of Ni/Co ratio on the performance of La0.8Mg0.2（Ni，Co）3.8 hydrogen storage alloy［J］.Battery，2023，53 （2）：191-195. | |
| 10 | ZHANG Yanghuan， SHANG Hongwei， HOU Zhonghui，et al.Hydrogen storage characteristics of nanocrystalline and amorphous Nd-Mg-Ni-based NdMg12-type alloys synthesized via mechanical milling［J］.Metallurgical and Materials Transactions A，2016，47（12）：6404-6412. |
| 11 | JIANG Weiqing， CHEN Yujie， HU Mengru，et al.Rare earth-Mg-Ni-based alloys with superlattice structure for electrochemical hydrogen storage［J］.Journal of Alloys and Compounds，2021，887：161381. |
| 12 | WANG Wenfeng， WANG Qing， SU Huanhuan，et al.Enhanced cycling durability of A5B19-type single-phase La-Mg-Ni-based hydrogen storage alloy via turning the superlattice structure by Mg［J］.International Journal of Hydrogen Energy，2024，71：741- 749. |
| 13 | FENG Dianchen， SUN Hao， HOU Zhonghui，et al.Highly ameliorated gaseous and electrochemical hydrogen storage dynamics of nanocrystalline and amorphous LaMg12-type alloys prepared by mechanical milling［J］.Journal of Iron and Steel Research International，2017，24（1）：50-58. |
| 14 | ZHANG Yanghuan， GONG Pengfei， LI Longwen，et al.Hydrogen storage thermodynamics and dynamics of La-Mg-Ni-based LaMg12-type alloys synthesized by mechanical milling［J］.Rare Metals，2019，38（12）：1144-1152. |
| 15 | 佘翔，刘冬梅，李雪.电动汽车用La-Fe-B储氢合金的制备与电化学性能研究［J］.无机盐工业，2021，53（10）：64-69. |
| SHE Xiang， LIU Dongmei， LI Xue.Study on preparation and electrochemical properties of La-Fe-B hydrogen storage alloys for high capacity electric vehicles［J］.Inorganic Chemicals Industry，2021，53（10）：64-69. | |
| 16 | YANG Tai， ZHAI Tingting， YUAN Zeming，et al.Structure and electrochemical properties of LaMgNi4- x Co x （x=0-0.8） hydrogen storage electrode alloys［J］.Rare Metals，2018，37（3）：249-256. |
| 17 | 范庆科，孟庆华.汽车用La0.79Mg0.21Ni3.95储氢合金的制备与电化学性能研究［J］.无机盐工业，2022，54（3）：71-76. |
| FAN Qingke， MENG Qinghua.Study on preparation and electrochemical properties of La0.79Mg0.21Ni3.95 hydrogen storage alloy for vehicles［J］.Inorganic Chemicals Industry，2022，54（3）：71- 76. | |
| 18 | 程丽群，左付山.新能源汽车电池用无镁储氢合金的制备与性能研究［J］.无机盐工业，2021，53（11）：71-76. |
| CHENG Liqun， ZUO Fushan.Study on preparation and properties of magnesium free hydrogen storage alloys for new energy vehicle batteries［J］.Inorganic Chemicals Industry，2021，53（11）：71-76. | |
| 19 | ZHAO Xin， KE Dandan， CAI Ying，et al.A novel synthesis method of La-Mg-Ni-based superlattice by LaNi5 absorbing gasstate Mg［J］.ChemistrySelect，2019，4（27）：8165-8170. |
| 20 | LIN Shuangping， NIE Zuoren， HUANG Hui，et al.Annealing behavior of a modified 5083 aluminum alloy［J］.Materials & Design，2010，31（3）：1607-1612. |
| 21 | 刘冬梅，肖润谋，佘翔.新能源汽车用储氢合金的制备与电化学性能研究［J］.化工新型材料，2021，49（06）：131-136. |
| LIU Dongmei， XIAO Runmou， SHE Xiang.Preparation and electrochemical properties of hydrogen storage alloys for new energy vehicles［J］.New chemical materials，2021，49（06）：131-136. | |
| 22 | WANG Wenfeng， LIU Xiaoxue， ZHANG Lu，et al.The electrochemical characteristics of AB4-type rare earth-Mg-Ni-based superlattice structure hydrogen storage alloys for nickel metal hydride battery［J］.Journal of Magnesium and Alloys，2021，9（6）：2039-2048. |
| 23 | ZHANG Yanghuan， LI Longwen， FENG Dianchen，et al.Hydrogen storage behavior of nanocrystalline and amorphous La-Mg-Ni-based LaMg12-type alloys synthesized by mechanical mill-ing［J］.Transactions of Nonferrous Metals Society of China，2017，27（3）：551-561. |
| 24 | HU Song， JIANG Xiaotong， WU Meng，et al.Analysis on echelon utilization status of new energy vehicles batteries［J］.IOP Conference Series：Earth and Environmental Science，2021，651（2）：022035. |
| 25 | DING Xin， CHEN Ruirun， ZHANG Jiaxin，et al.Achieving superior hydrogen storage properties via in situ formed nanostructures：A high-capacity Mg-Ni alloy with La microalloying［J］.International Journal of Hydrogen Energy，2022，47（10）：6755-6766. |
/
| 〈 |
|
〉 |
