苯硫酚盐基溶液的可充镁电池电解液.pdf

物理化学学报( Wuli Huaxue Xuebao)
February
Acta Phys. -Chim. Sin. 2014, 30(2), 311-317
311
Article
doi:10.3866/PKU.WHXB201312201
www.whxb.pku.edu.cn
苤硫酚盐基溶液的可充镁电池电解液
卞沛文努丽惠娜”再娜甫古丽杨军王久林
(上海交通大学化学化工学院,上海200240
摘要:将4-甲基苯硫酚、4-异丙基苯硫酚和4-甲氧基苯硫酚(RSH)分别与格氏试剂C2 HS Mgc/THF(四氢呋喃
反应制得的苯硫酚氯化镁( Rsmgci)(分别标记为MBMC、 IPBMC和 MOBMC)THF和进一步与 Lewis酸AC
反应制得的( RSMCI) Alcl/THF(n=1,1.5,2)苯硫酚盐基溶液用作可充镁电池电解液,采用循环伏安和恒电
流充放电测试研究了电解液的镁沉积-溶出性能和氧化分解电位结果表明,苯硫酚上的基团种类和 Rsmgc
与AC的比例对其电化学性能有影响.其中,0.5mol·L-'(PBMC) S-AICL/THF i溶液具有最佳的电化学性能,
其氧化分解电位适宜(2.4V( vs Mg/Mg2)镁沉积溶出循环效率稳定,过电位低,电导率较高(2.48mS·cm'),
与正极材料MoS。兼容性良好,且具有一定的空气稳定性,配制方便,有希望应用于实际的可充镁电池体系中
关键词可充镁电池;电解液;电化学性能;空气稳定性;兼容性
中图分类号:O646
Benzenethiolate-based Solutions for Rechargeable Magnesium
Battery Electrolytes
(School of Chemical Engineering, Shanghai Jiao Tong Universi shai 200240,P R. Ching/2
BIAN Pei-wen NULL Yan-na Zainapuguti YANG Jun WANG Jiu-lin
Abstact: The benzenethilte-bse lutions(RSM AC tetrahydrofuran(TH)(R=4-meth benzene
4-isopropyl benzene, 4-methoxybenzene; n=1, 1. 5, 2, respectively )were obtained by the simple reaction of
be etio mo s w h the Gnar reagent C H M C/THF and AC in THF, and the electrochemic
per ormance as the rechargeable magnesium battery elec rolytes are reported. First, 4-methyl-benzenethiolate
ma m rd(MM H 4is p e hiolate magnesium chloride(IPMC THF, and 4
methoxybenzenethiolate magnesim chioride (M THF solutions(termed as RSM THF)were
syntheszed b e acion of 4-m benzenethiol, 4-isoprop l benzenethiol, and 4-methoxybenzenethi
compounds, respectively, with CH/THF v a a hydrogen metal-raical exchange with rapid evolution of
ethane gas. Furthermore, RSM) Alcl/ THF solutions were obtained by the reaction of RSM/THF with
Alcl THF at different molar ratios of RSMC AC. The benzenethiolate-based solutions as electrolytes for
rechargeable magnesium batteries were characterized in term of anodic stability and reversibility of magnesium
deposition-issolution using yclic voltammetry and galvanostatic charge/discharge techniques. Furthermore
the compatibity of e s tions with M S cathode material was verified using coin cells with a M Se
Mg anode, and benzenethiolte-bed elec rol e. It is concluded that both the substituents on benzenethiol
and the ratio of RSMC: Alcl ave an effect on the electrochemical performance. 0.5 mol L(IPBMC) - AICL
TH hw e s lochem man w 2 V( M/M)anodic s a ility a ow voltage for
magnesium e ostion-iss tion, a ih c cling reversi bilit and good compatibility with the Mos cathode
Moreover the air insensitive character and easy preparation make it a promising candidate for rechargeable
battery electrolytes
Received September 24, 2013; Revised: December 20, 2013; Published on Web: December 20, 2013
Correspondingauthor.Email:nlyn@sjtu.edu.cn;Tel:+86-21-5474-5887-16
The project was supported by the National Natural Science Foundation of China (21273147)and Shanghai Municipal Science and Technology
Commission, China(11JC1405700
因家自然科学基金(21273147)和上海市科委(11C145700)资助项目
Editorial office of Acta Physico-chimica Sinica