Ru/ITO: A Carbon-Free Cathode for Nonaqueous Li-O2 Battery

被引：252

作者：

Li, Fujun ^{[1
,2
]}

Tang, Dai-Ming ^{[3
,4
]}

Chen, Yong ^{[1
]}

Golberg, Dmitri ^{[3
,4
]}

Kitaura, Hirokazu ^{[1
]}

Zhang, Tao ^{[1
]}

Yamada, Atsuo ^{[2
]}

Zhou, Haoshen ^{[1
,2
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Energy Technol Res Inst, Tsukuba, Ibaraki 3058568, Japan

[2] Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, Tokyo 1138656, Japan

[3] Natl Inst Mat Sci, ICYS, Tsukuba, Ibaraki 3050044, Japan

[4] Natl Inst Mat Sci, World Premier Int WPI Ctr Mat, Tsukuba, Ibaraki 3050044, Japan

来源：

NANO LETTERS | 2013年 / 13卷 / 10期

关键词：

Li-O-2; battery; carbon-free cathode; catalyst; overpotential; cycling performance; MECHANISM; LI2O2;

D O I：

10.1021/nl402213h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ru nanoparticle:; deposited on a conductive support indium tin oxide (Ru/ITO) were applied as a carbonfree cathode in a nonaqueous Li-O-2 battery. The Li-O-2 battery with Ru/ITO showed much lower charging overpotentials and better cycling performance at 0.15 mA/cm(2) than those with Super 1' (S ?) and SP loaded with Ru nanoparticles (Ru/SP) as: the cathodes. The carbon-free cathode Ru/ITO can effectively reduce formation of Li2CO3 or other Li carbonates in a i'disc aarging process, which cannot be completely decomposed 'Upon charging, in comparison with the carbon based cathode. The improved performance of Ru/ITO can be attributed to the superior catalytic activity of Ru nanoparticles toward oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) and the absence of carbon that has been reported to react with Li2O2 to form Li2CO3.

引用

页码：4702 / 4707

页数：6

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