Ultrafast Dischargeable LiMn2O4 Thin-Film Electrodes with Pseudocapacitive Properties for Microbatteries

被引：52

作者：

Fehse, Marcus ^{[1
]}

Trocoli, Rafael ^{[1
]}

Ventosa, Edgar ^{[2
]}

Hernandez, Elba ^{[1
]}

Sepulveda, Alfonso ^{[3
]}

Morata, Alex ^{[1
]}

Tarancon, Albert ^{[1
]}

机构：

[1] IREC, Jardins Dones Negre 1,2a, Barcelona 08930, Spain

[2] Ruhr Univ Bochum, Analyt Chem Elektroanalyt & Sensorik, Univ Str 150, D-44780 Bochum, Germany

[3] Imec, Kapeldreef 75, B-3001 Leuven, Belgium

来源：

ACS APPLIED MATERIALS & INTERFACES | 2017年 / 9卷 / 06期

关键词：

LiMn2O4; thin-film batteries; pseudocapacitive storage; lithium ion batteries; microbatteries; PULSED-LASER DEPOSITION; ELECTROCHEMICAL ENERGY-STORAGE; LITHIUM-ION BATTERIES; SOL-GEL METHOD; LI-MN-O; RECHARGEABLE BATTERIES; CATHODE MATERIAL; BEHAVIOR; OXIDE; SUPERCAPACITORS;

D O I：

10.1021/acsami.6b15258

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

LiMn2O4 (LMO) thin films are deposited on Si-based substrates with Pt current collector via multi-layer pulsed-laser-deposition technique. The LMO thin films feature unique kinetics that yield outstanding electrochemical cycling performance in an aqueous environment. At extremely high current densities of up to 1880 mu A cm(-2) (approximate to 348 C), a reversible capacity of 2.6 mu Ah cm(-2) is reached. Furthermore, the electrochemical cycling remains very stable for over 3500 cycles with a remarkable capacity retention of 99.996% per cycle. We provide evidence of significant nondiffusion-controlled, pseudocapacitive-like storage contribution of the LMO electrode.

引用

页码：5295 / 5301

页数：7

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