Enhanced Cycling Performance of Li-O2 Battery by Using a Li3PO4-Protected Lithium Anode in DMSO-Based Electrolyte

被引：24

作者：

Guo, Huanhuan ^{[1
,2
]}

Hou, Guangmei ^{[1
,2
]}

Guo, Jianguang ^{[1
,2
]}

Ren, Xiaohua ^{[1
,2
]}

Ma, Xiaoxin ^{[1
,2
]}

Dai, Linna ^{[1
,2
]}

Guo, Shirui ^{[1
,2
]}

Lou, Jun ^{[1
,2
,3
,4
]}

Feng, Jinkui ^{[1
,2
]}

Zhang, Lin ^{[1
,2
]}

Si, Pengchao ^{[1
,2
]}

Ci, Lijie ^{[1
,2
]}

机构：

[1] Shandong Univ, SDU, Jinan 250061, Shandong, Peoples R China

[2] Shandong Univ, Sch Mat Sci & Engn, Key Lab Liquid Solid Struct Evolut & Proc Mat, Rice Joint Ctr Carbon Nanomat,Minist Educ, Jinan 250061, Shandong, Peoples R China

[3] Rice Univ, SDU, Houston, TX 77005 USA

[4] Rice Univ, Dept Mat Sci & NanoEngn, Rice Joint Ctr Carbon Nanomat, Houston, TX 77005 USA

来源：

ACS APPLIED ENERGY MATERIALS | 2018年 / 1卷 / 10期

基金：

美国国家科学基金会;

关键词：

Li-O-2; battery; artificial SEI film; Li3PO4; DMSO-based electrolyte; LiI redox mediator; AIR BATTERIES; OXYGEN BATTERY; LI; PERSPECTIVE; REDUCTION; STABILITY; LIQUID; IODIDE; LAYER;

D O I：

10.1021/acsaem.8b01061

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Lithium oxygen batteries (LOBs) have attracted increasing interest because of their superior theoretical specific energy. However, the stability of lithium metal anode is one of the obstacles limiting their practical applications. Here, we introduce an artificial Li3PO4 solid electrolyte interphase (SEI) film to protect the lithium anode in LOB with LiI/LiNO3/DMSO (dimethyl sulfoxide) electrolyte. The Li3PO4-protected Li anode exhibits excellent electrochemical stability during the Li stripping/plating process and leads to a relatively uniform and featureless surface in LOB after cycling. Our research demonstrates that superior electrochemical performance can be achieved in the Li O-2 battery with the synergistic combination of the DMSO-based electrolyte, the LiI redox mediator, and the Li(3)PO(4)protected Li anode. The LOB with a Li3PO4-protected Li anode exhibits a prolonged cycling life span of 152 cycles with a fixed capacity of 1000 mA h at 2 A The results in this work provide knowledge for the development of a robust strategy for protecting the Li anode in the applications of Li-O-2 batteries.

引用

页码：5511 / 5517

页数：13

共 38 条

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A lithium-oxygen battery with a long cycle life in an air-like atmosphere [J].