Home

Citation: CHEN Ye, YE Ke. Mechanism of Electrolysis of Magnesium Chloride in MgCl₂-KCl-NaCl-CaCl₂ Molten Salt[J]. Chinese Journal of Applied Chemistry, ;2008, 25(12): 1409-1412. shu

Mechanism of Electrolysis of Magnesium Chloride in MgCl₂-KCl-NaCl-CaCl₂ Molten Salt

CHEN Ye ^, ,
YE Ke

1.
Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001

Corresponding author: CHEN Ye,
Received Date: 9 November 2007
Available Online: 26 January 2008
Fund Project: 国家高技术研究发展计划("八六三"计划,2006AA03Z510) ("八六三"计划,2006AA03Z510)黑龙江省科技攻关基金(GC06A212)资助项目 (GC06A212)

At 725℃,MgCl₂-KCl-NaCl-CaCl₂ molten salt was used for the electrolysis of magnesium chloride.Results show that in the course of magnesium electrolysis,cathode overvoltage η_c is not large,only 12~51 mV,the overvoltage of the electrolysis process is mainly caused by the anode;the diffusion-limited current id of the cathodic process is 1.56 A/cm²;the number of electron transfer of the cathodic process is 1.98;while there is a pre-conversion step MgCl⁺=Mg²⁺+C1^-before the reversible electron transfer step.CV was used to study magnesium ions behavior in the molten salt electrolyte with four different ratios of CaCl₂.With changing CaCl₂ from 10 percent to 40 percent,while maintaining MgCl₂ to be 10 percent and the mass ratio of NaCl and KCl to be 6:1,as the amount of CaCl₂ increased,magnesium ions integrate into the complexing anions,which are not easy to move.As a result,the migration current of magnesium ions decreases,the magnesium ions deposition potential gradually moves to the negative direction from-1.595 V to which codeposition of magnesium with Ca and Na takes place,cathodic peak current Ipc gradually increases,the absolute value of the difference between anodic peak potential and cathodic peak potential |φ_pa-φ_pc| gradually increases,and the reversibility of cathode discharge reaction gradually lowers.
- molten salt,
- electrolysis,
- magnesium,
- cathodic process
1. [1]
  Feiya Cao , Qixin Wang , Pu Li , Zhirong Xing , Ziyu Song , Heng Zhang , Zhibin Zhou , Wenfang Feng . Magnesium-Ion Conducting Electrolyte Based on Grignard Reaction: Synthesis and Properties. University Chemistry, 2024, 39(3): 359-368. doi: 10.3866/PKU.DXHX202308094
2. [2]
  Jinghua Wang , Yanxin Yu , Yanbiao Ren , Yesheng Wang . Integration of Science and Education: Investigation of Tributyl Citrate Synthesis under the Promotion of Hydrate Molten Salts for Research and Innovation Training. University Chemistry, 2024, 39(11): 232-240. doi: 10.3866/PKU.DXHX202402057
3. [3]
  Jiaxin Su , Jiaqi Zhang , Shuming Chai , Yankun Wang , Sibo Wang , Yuanxing Fang . Optimizing Poly(heptazine imide) Photoanodes Using Binary Molten Salt Synthesis for Water Oxidation Reaction. Acta Physico-Chimica Sinica, 2024, 40(12): 2408012-0. doi: 10.3866/PKU.WHXB202408012
4. [4]
  Xiaosong PU , Hangkai WU , Taohong LI , Huijuan LI , Shouqing LIU , Yuanbo HUANG , Xuemei LI . Adsorption performance and removal mechanism of Cd(Ⅱ) in water by magnesium modified carbon foam. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1537-1548. doi: 10.11862/CJIC.20240030
5. [5]
  Ping Song , Nan Zhang , Jie Wang , Rui Yan , Zhiqiang Wang , Yingxue Jin . Experimental Teaching Design on Synthesis and Antitumor Activity Study of Cu-Pyropheophorbide-a Methyl Ester. University Chemistry, 2024, 39(6): 278-286. doi: 10.3866/PKU.DXHX202310087
6. [6]
  Lisha LEI , Wei YONG , Yiting CHENG , Yibo WANG , Wenchao HUANG , Junhuan ZHAO , Zhongjie ZHAI , Yangbin DING . Application of regenerated cellulose and reduced graphene oxide film in synergistic power generation from moisture electricity generation and Mg-air batteries. Chinese Journal of Inorganic Chemistry, 2025, 41(6): 1151-1161. doi: 10.11862/CJIC.20240202
7. [7]
  Yu Peng , Jiawei Chen , Yue Yin , Yongjie Cao , Mochou Liao , Congxiao Wang , Xiaoli Dong , Yongyao Xia . Tailored cathode electrolyte interphase via ethylene carbonate-free electrolytes enabling stable and wide-temperature operation of high-voltage LiCoO₂. Acta Physico-Chimica Sinica, 2025, 41(8): 100087-0. doi: 10.1016/j.actphy.2025.100087
8. [8]
  Hanmei Lü , Xin Chen , Qifu Sun , Ning Zhao , Xiangxin Guo . Uniform Garnet Nanoparticle Dispersion in Composite Polymer Electrolytes. Acta Physico-Chimica Sinica, 2024, 40(3): 2305016-0. doi: 10.3866/PKU.WHXB202305016
9. [9]
  Jiandong Liu , Xin Li , Daxiong Wu , Huaping Wang , Junda Huang , Jianmin Ma . Anion-Acceptor Electrolyte Additive Strategy for Optimizing Electrolyte Solvation Characteristics and Electrode Electrolyte Interphases for Li||NCM811 Battery. Acta Physico-Chimica Sinica, 2024, 40(6): 2306039-0. doi: 10.3866/PKU.WHXB202306039
10. [10]
  Xin Feng , Kexin Guo , Chunguang Jia , Bowen Liu , Suqin Ci , Junxiang Chen , Zhenhai Wen . Hydrogen Generation Coupling with High-Selectivity Electrocatalytic Glycerol Valorization into Formate in an Acid-Alkali Dual-Electrolyte Flow Electrolyzer. Acta Physico-Chimica Sinica, 2024, 40(5): 2303050-0. doi: 10.3866/PKU.WHXB202303050
11. [11]
  Kai CHEN , Fengshun WU , Shun XIAO , Jinbao ZHANG , Lihua ZHU . PtRu/nitrogen-doped carbon for electrocatalytic methanol oxidation and hydrogen evolution by water electrolysis. Chinese Journal of Inorganic Chemistry, 2024, 40(7): 1357-1367. doi: 10.11862/CJIC.20230350
12. [12]
  Yongmei Liu , Lisen Sun , Zhen Huang , Tao Tu . Curriculum-Based Ideological and Political Design for the Experiment of Methanol Oxidation to Formaldehyde Catalyzed by Electrolytic Silver. University Chemistry, 2024, 39(2): 67-71. doi: 10.3866/PKU.DXHX202308020
13. [13]
  Xinran Zhang , Siqi Liu , Yichi Chen , Qingli Zou , Qinghong Xu , Yaqin Huang . From Protein to Energy Storage Materials: Edible Gelatin Jelly Electrolyte. University Chemistry, 2025, 40(7): 255-266. doi: 10.12461/PKU.DXHX202408104
14. [14]
  Kai PENG , Xinyi ZHAO , Zixi CHEN , Xuhai ZHANG , Yuqiao ZENG , Jianqing JIANG . Progress in the application of high-entropy alloys and high-entropy ceramics in water electrolysis. Chinese Journal of Inorganic Chemistry, 2025, 41(7): 1257-1275. doi: 10.11862/CJIC.20240454
15. [15]
  Hao Chen , Dongyue Yang , Gang Huang , Xinbo Zhang . Progress on Liquid Organic Electrolytes of Li-O₂ Batteries. Acta Physico-Chimica Sinica, 2024, 40(7): 2305059-0. doi: 10.3866/PKU.WHXB202305059
16. [16]
  Jiandong Liu , Zhijia Zhang , Kamenskii Mikhail , Volkov Filipp , Eliseeva Svetlana , Jianmin Ma . Research Progress on Cathode Electrolyte Interphase in High-Voltage Lithium Batteries. Acta Physico-Chimica Sinica, 2025, 41(2): 2308048-0. doi: 10.3866/PKU.WHXB202308048
17. [17]
  Xiao Liu , Guangzhong Cao , Mingli Gao , Hong Wu , Hongyan Feng , Chenxiao Jiang , Tongwen Xu . Seawater Salinity Gradient Energy’s Job Application in the Field of Membranes. University Chemistry, 2024, 39(9): 279-282. doi: 10.3866/PKU.DXHX202306043
18. [18]
  Qingqing SHEN , Xiangbowen DU , Kaicheng QIAN , Zhikang JIN , Zheng FANG , Tong WEI , Renhong LI . Self-supporting Cu/α-FeOOH/foam nickel composite catalyst for efficient hydrogen production by coupling methanol oxidation and water electrolysis. Chinese Journal of Inorganic Chemistry, 2024, 40(10): 1953-1964. doi: 10.11862/CJIC.20240028
19. [19]
  Shuang Yang , Qun Wang , Caiqin Miao , Ziqi Geng , Xinran Li , Yang Li , Xiaohong Wu . Ideological and Political Education Design for Research-Oriented Experimental Course of Highly Efficient Hydrogen Production from Water Electrolysis in Aerospace Perspective. University Chemistry, 2024, 39(11): 269-277. doi: 10.12461/PKU.DXHX202403044
20. [20]
  Jiahe LIU , Gan TANG , Kai CHEN , Mingda ZHANG . Effect of low-temperature electrolyte additives on low-temperature performance of lithium cobaltate batteries. Chinese Journal of Inorganic Chemistry, 2025, 41(4): 719-728. doi: 10.11862/CJIC.20250023

Get Citation

PDF

XML

Metrics

PDF Downloads(1)
Abstract views(999)
HTML views(262)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return

Mechanism of Electrolysis of Magnesium Chloride in MgCl2-KCl-NaCl-CaCl2 Molten Salt

Metrics

通讯作者: 陈斌, bchen63@163.com

Mechanism of Electrolysis of Magnesium Chloride in MgCl₂-KCl-NaCl-CaCl₂ Molten Salt