Dynamic changes in charge-transfer resistance at Li metal/Li7La3Zr2O12 interfaces during electrochemical Li dissolution/deposition cycles

被引：112

作者：

Koshikawa, Hiroyuki ^{[1
]}

Matsuda, Shoichi ^{[2
]}

Kamiya, Kazuhide ^{[3
,4
]}

Miyayama, Masaru ^{[1
]}

Kubo, Yoshimi ^{[2
]}

Uosaki, Kohei ^{[2
]}

Hashimoto, Kazuhito ^{[2
]}

Nakanishi, Shuji ^{[3
,4
,5
]}

机构：

[1] Univ Tokyo, Dept Appl Chem, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan

[2] Natl Inst Mat Sci, Global Res Ctr Environm & Energy Based Nanomat Sci, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan

[3] Osaka Univ, Res Ctr Solar Energy Chem, 1-3 Machikaneyama, Toyonaka, Osaka 5608531, Japan

[4] Osaka Univ, Grad Sch Engn Sci, 1-3 Machikaneyama, Toyonaka, Osaka 5608531, Japan

[5] Panasonic Sci Res Alliance Labs, 2-1 Yamadaoka, Suita, Osaka 5650871, Japan

来源：

JOURNAL OF POWER SOURCES | 2018年 / 376卷

关键词：

Li dissolution/deposition; Garnet-type Li7La3Zr2O12; AC impedance spectroscopy; Interfacial resistance; Li metal anode; LITHIUM METAL ANODE; SOLID-STATE ELECTROLYTE; LI7LA3ZR2O12; NUCLEATION; KINETICS; STABILITY; ELECTRODEPOSITION; TEMPERATURE; PREVENTION; BATTERIES;

D O I：

10.1016/j.jpowsour.2017.11.082

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Dynamic changes in the charge-transfer resistance at a Li/Li7La3Zr2O12 (LLZ) interface during lithium (Li) dissolution/deposition cycles are investigated with an alternative current (AC) impedance technique in a three electrode system. The resistance respectively increases and decreases during electrodissolution and electrodeposition of Li. The resistance does not return to the initial value after one cycle of Li dissolution and deposition, which indicates that the change in resistance during dissolution is larger than that during deposition. Furthermore, the resistance is almost constant when Li deposition proceeds without prior Li dissolution. The respective increase and decrease in the interfacial resistance during Li dissolution and deposition is most likely due to the formation and disappearance of voids at the Li/LLZ interface, and the voids formation during Li dissolution is suggested to be a critical factor that influences the interfacial resistance.

引用

页码：147 / 151

页数：5

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