Solvent Molecule Design Enables Excellent Charge Transfer Kinetics for a Magnesium Metal Anode
- Fei WangFei WangCollege of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR ChinaState-Province Joint Engineering Laboratory of Power Source Technology for New Energy Vehicle, State Key Laboratory of Physical Chemistry of Solid Surfaces, Engineering Research Center of Electrochemical Technology, Ministry of Education, Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, PR ChinaMore by Fei Wang,
- Haiming HuaHaiming HuaCollege of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR ChinaState-Province Joint Engineering Laboratory of Power Source Technology for New Energy Vehicle, State Key Laboratory of Physical Chemistry of Solid Surfaces, Engineering Research Center of Electrochemical Technology, Ministry of Education, Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, PR ChinaMore by Haiming Hua,
- Dongzheng WuDongzheng WuCollege of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR ChinaState-Province Joint Engineering Laboratory of Power Source Technology for New Energy Vehicle, State Key Laboratory of Physical Chemistry of Solid Surfaces, Engineering Research Center of Electrochemical Technology, Ministry of Education, Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, PR ChinaMore by Dongzheng Wu,
- Jialin LiJialin LiCollege of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR ChinaState-Province Joint Engineering Laboratory of Power Source Technology for New Energy Vehicle, State Key Laboratory of Physical Chemistry of Solid Surfaces, Engineering Research Center of Electrochemical Technology, Ministry of Education, Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, PR ChinaMore by Jialin Li,
- Yaoqi XuYaoqi XuCollege of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR ChinaState-Province Joint Engineering Laboratory of Power Source Technology for New Energy Vehicle, State Key Laboratory of Physical Chemistry of Solid Surfaces, Engineering Research Center of Electrochemical Technology, Ministry of Education, Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, PR ChinaMore by Yaoqi Xu,
- Xianzhen NieXianzhen NieCollege of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR ChinaState-Province Joint Engineering Laboratory of Power Source Technology for New Energy Vehicle, State Key Laboratory of Physical Chemistry of Solid Surfaces, Engineering Research Center of Electrochemical Technology, Ministry of Education, Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, PR ChinaMore by Xianzhen Nie,
- Yichao ZhuangYichao ZhuangCollege of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR ChinaState-Province Joint Engineering Laboratory of Power Source Technology for New Energy Vehicle, State Key Laboratory of Physical Chemistry of Solid Surfaces, Engineering Research Center of Electrochemical Technology, Ministry of Education, Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, PR ChinaMore by Yichao Zhuang,
- Jing Zeng*Jing Zeng*Email: [email protected]College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR ChinaState-Province Joint Engineering Laboratory of Power Source Technology for New Energy Vehicle, State Key Laboratory of Physical Chemistry of Solid Surfaces, Engineering Research Center of Electrochemical Technology, Ministry of Education, Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, PR ChinaMore by Jing Zeng, and
- Jinbao Zhao*Jinbao Zhao*Email: [email protected]College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR ChinaState-Province Joint Engineering Laboratory of Power Source Technology for New Energy Vehicle, State Key Laboratory of Physical Chemistry of Solid Surfaces, Engineering Research Center of Electrochemical Technology, Ministry of Education, Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, PR ChinaMore by Jinbao Zhao
Abstract
Lacking of suitable electrolytes is a fatal obstacle for the development of rechargeable magnesium batteries (RMBs). Herein, according to the design of a series of solvent molecules, we find 3-methoxypropylamine possesses a middle coordination ability that can be used as an effective solvent and realize a reversible Mg anode with traditional Mg salts. Mechanism study indicates, attributed to its unique solvated structure, energy barriers in both the charge transfer process and desolvation process are extremely low, thus leading to the fast charge transfer kinetics. The relationship between solvated structures and performances is precisely revealed for the first time in RMBs. Additionally, electrolytes with amine solvents possess outstanding water-resistant properties owing to strong hydrogen bonds between amine groups and water. This work proposes a universal design principle of solvent molecules for RMBs, inspiring a new thinking of developing advanced electrolytes in the view of solvents.
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