DOI: 10.1016/j.scib.2021.04.034
论文题名: Universal lithiophilic interfacial layers towards dendrite-free lithium anodes for solid-state lithium-metal batteries
作者: Lu G. ; Dong Z. ; Liu W. ; Jiang X. ; Yang Z. ; Liu Q. ; Yang X. ; Wu D. ; Li Z. ; Zhao Q. ; Hu X. ; Xu C. ; Pan F.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2021
卷: 66, 期: 17 起始页码: 1746
结束页码: 1753
语种: 英语
中文关键词: Garnet
; Lithiophilic layers
; Lithium metal batteries
; Solid-state electrochemical interface
; Solid-state electrolytes
英文关键词: Anodes
; Garnets
; Interface states
; Lanthanum compounds
; Lithium
; Lithium batteries
; Lithium compounds
; Solid-State Batteries
; Tantalum compounds
; Zirconium compounds
; Interfacial layer
; La$+3+$
; Li$++$
; Li-battery
; Lithiophilic layer
; Lithium anode
; Lithium metal battery
; Lithium metals
; Solid-state electrochemical interface
; Solid-state electrolyte
; Solid electrolytes
英文摘要: Solid-state lithium-metal batteries (SSLMBs) using garnet Li6.4La3Zr1.4Ta0.6O12 (LLZTO) as the solid electrolyte are expected to conquer the safety concerns of high energy Li batteries with organic liquid electrolytes owing to its nonflammable nature and good mechanical strength. However, the poor interfacial contact between the Li anode and LLZTO greatly restrains the practical applications of the electrolyte, because large polarization, dendritic Li formation and penetration can occur at the interfaces. Here, an effective method is proposed to improve the wettability of the LLZTO toward lithium and reduce the interfacial resistance by engineering universal lithiophilic interfacial layers. Thanks to the in-situ formed lithiophilic and ionic conductive Co/Li2O interlayers, the symmetric Li/CoO-LLZTO/Li batteries present much smaller overpotential, ultra-low areal specific resistance (ASR, 12.3 Ω cm2), high critical current density (CCD, 1.1 mA cm−2), and outstanding cycling performance (1696 h at a current density of 0.3 mA cm−2) at 25 °C. Besides, the solid-state Li/CoO-LLZTO/LFP cells deliver an excellent electrochemical performance with a high coulombic efficiency of ~100% and a long cycling time over 185 times. Surprisingly, the high-voltage (4.6 V) solid state Li/CoO-LLZTO/Li1.4Mn0.6Ni0.2Co0.2O2.4 (LMNC622) batteries can also realize an ultra-high specific capacity (232.5 mAh g−1) under 0.1 C at 25 °C. This work paves an effective way for practical applications of the dendrite-free SSLMBs. © 2021 Science China Press Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170347
Appears in Collections: 气候变化与战略
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作者单位: College of Aerospace Engineering, Chongqing University, Chongqing, 400044, China; College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, China; Hunan Province Key Laboratory of Electrochemical Energy Storage and Conversion, School of Chemistry, Xiangtan University, Xiangtan, 411105, China
Recommended Citation:
Lu G.,Dong Z.,Liu W.,et al. Universal lithiophilic interfacial layers towards dendrite-free lithium anodes for solid-state lithium-metal batteries[J]. Science Bulletin,2021-01-01,66(17)