## Design of Classroom Teaching in Inorganic Chemistry: Structure and Properties of Alkali Metal Elements and Their Applications in Lithium-Ion Batteries

Wei Mingdeng,, Wei Qiaohua

 基金资助: 福州大学第10批高等教育教学改革工程项目.  500108522018年福州大学一流本科教学改革建设项目

Abstract

This paper uses "the structure and properties of alkali metal elements as well as their applications in lithium-ion battery" to illustrate the concrete methods in the classroom teaching of elementary chemistry. It is aimed at guiding the students to understand the structure and properties of alkali metal elements and arising their interest in applications of alkali metal elements in lithium-ion battery in the classroom land discussion. The relationships among the structure, chemical performance and applications in lithium-ion battery for alkali metal elements have been discussed in detail. Furthermore, a series of experiments including synthesis and characterization of electrode materials, and fabrication and measurement of devices, will be executed. Finally, the students have also been encouraged to execute "Students Research Training Program, SRTP" in new energy materials related institutes, and in this way the classroom knowledge and scientific research have been linked closely.

Keywords： Chemistry of elements ; Classroom teaching ; Structure ; Performance ; Lithium-ion battery ; Teaching reform

Wei Mingdeng. Design of Classroom Teaching in Inorganic Chemistry: Structure and Properties of Alkali Metal Elements and Their Applications in Lithium-Ion Batteries. University Chemistry[J], 2021, 36(6): 2008073-0 doi:10.3866/PKU.DXHX202008073

## 1 授课对象及课程概况

### 2 课堂教学的内容组织与实施方式

#### 2.1.2 碱金属氧化物和氢氧化物的结构和化学性质

$4{\rm{MO}}_3^ - ({\rm{s}}) + {{\rm{H}}_2}{\rm{O}} = 4{\rm{MOH}} + 5{{\rm{O}}_2}$

$\phi = Z/r$

### 图1

$正极反应：{\rm{LiCo}}{{\rm{O}}_2} \Leftrightarrow {\rm{L}}{{\rm{i}}_{1 - x}}{\rm{Co}}{{\rm{O}}_2} + x{\rm{L}}{{\rm{i}}^ + } + x{{\rm{e}}^ - }$

$负极反应：6{\rm{C}} + x{\rm{L}}{{\rm{i}}^ + } + x{{\rm{e}}^ - } \Leftrightarrow {\rm{L}}{{\rm{i}}_x}{{\rm{C}}_6}$

$总反应式：6{\rm{C}} + {\rm{LiCo}}{{\rm{O}}_2} \Leftrightarrow {\rm{L}}{{\rm{i}}_{1 - x}}{\rm{Co}}{{\rm{O}}_2} + {\rm{L}}{{\rm{i}}_x}{{\rm{C}}_6}$

$理论比容量 = nF/3.6M$

2018年我国锂离子电池的全球市场份额就突破了60%，占据世界第一。随着我国新能源汽车销量增长和储能电站建设的扩大，对锂离子电池的需求保持旺盛势头，导致锂价格的飞涨。由于我国锂资源短缺，寻找替代碱金属锂是十分紧迫的。近年来，钠离子和钾离子电池的研究进展十分迅速，也取得了一系列成果[7, 8]。虽然它们的工作原理与锂离子电池相似，但是，较大离子半径的钠/钾离子在电极材料中脱嵌困难，而原子质量大也导致理论容量低，从而影响器件的能量密度，这实际上反映出“性质决定应用”。在此，安排学生查阅相关文献，了解国内外有关锂离子电池研究与产业的最新进展，为下一步进入实验室实习作必要的准备。

## 参考文献 原文顺序 文献年度倒序 文中引用次数倒序 被引期刊影响因子

Pistoia, G. 锂离子电池技术——研究进展与应用. 赵瑞瑞, 余乐, 陈红雨, 译. 北京: 化学工业出版社, 2017: 4-12.

Liang Y. R. ; Lai W. H. ; Miao Z. C. ; Chou S. L. Small 2018, 14, 1702514.

Zhang W. C. ; Liu Y. J. ; Guo Z. P. Sci. Adv. 2019, 5, 7412.

Zhang W. F. ; Zhang Y. ; Yu L. ; Wu N. L. ; Huang H. T. ; Wei M. D. J. Mater. Chem. A 2019, 7, 3842.

Yang W. J. ; Luo N. J. ; Zheng C. ; Huang S. P. ; Wei M. D. Small 2019, 15, 1903904.

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