Li7La3Zr2O12 Interface Modification for Li Dendrite Prevention

Tsai, Chih‐Long; Roddatis, Vladimir; Chandran, C. Vinod; Ma, Qianli; Uhlenbruck, Sven; Bram, Martin; Heitjans, Paul; Guillon, Olivier

doi:10.1021/acsami.6b00831

Cited by 694 publications

(663 citation statements)

References 28 publications

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“…Thin film alloy prepared by magnetron sputtering, physical vapor deposition, or chemical vapor deposition have an outstanding capacity retention, which can be attributed to the strong adhesion of atoms onto the substrate support and elimination of the changing phase structure with different Li host. [126][127][128][129][130][131][132][133][134][135][136] However, Li-Al alloy mounds were present on the Al anode film surface instead of the Al-solid electrolyte surface, [126] and the cell capacity degraded as a result of Li trapping in these alloy mounds. This result indicates that only alloy film anodes seem inadequate for the solid-state Li metal battery.…”

Section: Interface Between Anode and Solid Electrolytementioning

confidence: 99%

“…The constant dc measurement (Figure 16g) also has a considerably lower starting voltage for Au-coated LLZ, which can be attributed to the lower contact resistance between Li metal and solid electrolyte. [130] In addition to Si and Au, the film coating of ZnO, Ge, and Al have similar advantages. [134,136,137] Surprisingly, the surface coated with ultrathin Al 2 O 3 from atomic layer deposition (ALD) effectively negates the interfacial resistance from 1710 to 1 Ω cm 2 , as illustrated in Figure 17c and provides a stable voltage of 13 mV in Li plating and stripping plots (Figure 17d).…”

Section: Wwwadvenergymatdementioning

confidence: 99%

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Rechargeable Solid‐State Li–Air and Li–S Batteries: Materials, Construction, and Challenges

Liu

Zhou

2017

Advanced Energy Materials

265

190

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batteries based on intercalation materials cannot meet the demands of long-distance transport (i.e., >300 km).Recently, interest in Li-air [4][5][6] (or Li-O 2 as oxygen is the cathode active component) and Li-S batteries [7][8][9] has increased because of their high theoretical capacities and energy densities, which are suitable for remote transportation. Abraham and Jiang introduced the first rechargeable Li-O 2 battery in 1996, [10] although it drew little interest until Bruce and co-workers proved the rechargeability of Li 2 O 2 . [11] Li-O 2 cells possess significant strength because oxygen gas can be obtained from ambient air. Li-ions react with oxygen according to Equation (1), and Li 2 O 2 is the discharge product with an equilibrium potential of 2.96 V, delivering a large specific energy of 3600 W h kg −1 . Investigations on Li-S cell date back to the 1940s. The insulating nature of sulfur, Li 2 S 2 , and Li 2 S and the solubility of polysulfide intermediates greatly hinder its development. Fortunately, recent studies on new electrolytes and nanostructured material design provide merits and opportunities in developing Li-S batteries. Similar to Li-O 2 batteries, Li-S batteries, which contain inexpensive and abundant sulfur as positive electrode material, produce an average voltage of 2.15 V and possess a theoretical energy density of up to 2600 W h kg −1 , as further indicated by Equation (2). Many studies showed that intermediate polysulfide is produced during the discharge process where Li 2 S is formed as the final product. Typically, Li-O 2 and Li-S batteries both adopt Li metal as anode. The reason is that Li possesses the largest capacity (3860 mA h g −1 ) and the lowest negative electrochemical potential (−3.04 V) versus standard hydrogen electrodes. Thus, Li-O 2 and Li-S batteries are considered to be promising next-generation energy storage systems for PEVs and HEVs However, despite the advantages of Li-O 2 and Li-S batteries, they exhibit ignitability, toxicity, liquid leakage, and volatilization because of their organic liquid electrolyte components. Moreover, Li dendrites form during cycling, resulting in internal short circuit that leads to combustion and even cell explosion. [12,13] More seriously, the charging process in Li-air

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Section: Interface Between Anode and Solid Electrolytementioning

confidence: 99%

Section: Wwwadvenergymatdementioning

confidence: 99%

Rechargeable Solid‐State Li–Air and Li–S Batteries: Materials, Construction, and Challenges

Liu

Zhou

2017

Advanced Energy Materials

265

190

View full text Add to dashboard Cite

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“…While for thin-film batteries, prepared by cost-intensive sputtering or other (vacuum) deposition techniques, Li metal anodes might be difficult to implement, for bulk-type batteries the use of metal anodes will provide the necessary jump in energy density to make them a serious option for electric vehicles. Although the ceramic acts as a 'dense' membrane the risk of unsolicited Li plating and dendrite formation along grain boundaries is still given [78].…”

Section: The Demands On Solid Electrolytes and All-solid-state Batteriesmentioning

confidence: 99%

Ion dynamics in solid electrolytes for lithium batteries

et al. 2017

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All-solid-state batteries with ceramic electrolytes and lithium metal anodes represent an attractive alternative to conventional ion battery systems. Conventional batteries still rely on flammable liquids as electronic insulators. Despite the great efforts reported over the last years, the optimum solid electrolyte has, however, not been found yet. One of the most important properties which decides whether a ceramic is useful to work as electrolyte is ionic transport. The various time-domain nuclear magnetic resonance (NMR) techniques might help characterize and select the most suitable candidates. Together with conductivity measurements it is possible to analyze ion dynamics on different length-scales, i.e., to differentiate between local, within-site hopping processes from long-range ion transport. The latter needs to be sufficiently fast in the ceramic, in the best case competing with that of liquid electrolytes. In addition to conductivity spectroscopy, NMR can help understand the relationship between local structure and dynamic parameters. Besides information on activation energies and jump rates the data also contain suggestions about the relevant elementary steps of ion hopping and, thus, Support by the Deutsche Forschungsgemeinschaft (DFG) is highly appreciated (FOR 1277 diffusion pathways through the crystal lattice. Recent progress in characterizing ion dynamics in ceramic electrolytes by NMR relaxometry will be briefly reviewed. Focus is put on presently discussed solid electrolytes such as garnets, phosphates and sulfides, which have so far been studied in our lab.

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“…Among them, the solid electrolyte-electrode interface is the bottleneck for Li transport. 11,12 The high interfacial resistance between the solid electrolyte and electrode render the charge transfer and Li transport very slow, and thus, it limits the electrochemical performance of all-solid-state Li-ion batteries. Using nuclear magnetic resonance spectroscopy, Yu et al reported that the electrolyteelectrode Li 6 PS 5 Cl-Li 2 S interface is the dominant factor responsible for the restricted power performance.…”

mentioning

confidence: 99%

Mesoscale Analysis of the Electrolyte-Electrode Interface in All-Solid-State Li-Ion Batteries

Feng

Mukherjee

2018

J. Electrochem. Soc.

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Electrolyte-electrode interface plays a critical role in the electrochemical performance of all-solid-state Li-ion batteries. In this work, a mesoscale study is presented to investigate lithium transport and stress in the solid electrolyte based positive electrode during discharge. It is found that increasing electrolyte-electrode interface contact facilitates Li intercalation into the electrode and alleviates the stresses in both the electrode and the electrolyte. Using small electrode particles helps to improve rate capability and avoid interfacial failures due to the volume change of electrode particles. Interface stress strongly depends on the mechanical properties of the two components. In addition, this study demonstrates the importance of electrolyte network through the porous active particle backbone. Li-ion batteries have attracted intensive research interest because of the emerging demand for energy storage devices, and energy density has primarily driven the technological advance of lithium-ion batteries.1,2 Recently, increasing efforts are directed to developing allsolid-state Li-ion batteries, which possess prominent advantages over liquid electrolyte based Li-ion batteries.3-5 Replacing the flammable organic electrolyte with solid electrolyte can improve battery safety by reducing the risk of fire and explosion. For all-solid-state batteries, the mitigation of dendritic growth enables the batteries to use Li metal anode over extended cycling, resulting in high specific capacities and operating voltages. In the literature, various solid electrolytes are used as Li-ion conductors. An electronically insulating electrolyte should have high Liion permeability to enhance Li transport kinetics, as well as the high stiffness to resist the dendritic propagation through electrolyte. The widely investigated electrolytes include polymer polyethylene oxide (PEO), NASICON-type electrolytes, garnet-type electrolytes, and sulfides. [7][8][9] In general, the sulfide electrolytes have high ionic conductivities but low chemical stabilities, which are sensitive to moisture. In contrast, garnet-type electrolytes present the most stable interface with Li metal anodes, which are anticipated to be promising electrolytes to achieve high energy densities. 10Despite the remarkable progress, all-solid-state batteries still face key challenges. Among them, the solid electrolyte-electrode interface is the bottleneck for Li transport. 11,12 The high interfacial resistance between the solid electrolyte and electrode render the charge transfer and Li transport very slow, and thus, it limits the electrochemical performance of all-solid-state Li-ion batteries. Using nuclear magnetic resonance spectroscopy, Yu et al. reported that the electrolyteelectrode Li 6 PS 5 Cl-Li 2 S interface is the dominant factor responsible for the restricted power performance. 13 To improve the interfacial transfer, in addition to interlayer coatings, 14 Sharafi et al. found that the interfacial resistance of Li-Li 7 La 3 Zr 2 O 12 can be dramatically re...

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Li₇La₃Zr₂O₁₂ Interface Modification for Li Dendrite Prevention

Cited by 694 publications

References 28 publications

Rechargeable Solid‐State Li–Air and Li–S Batteries: Materials, Construction, and Challenges

Rechargeable Solid‐State Li–Air and Li–S Batteries: Materials, Construction, and Challenges

Ion dynamics in solid electrolytes for lithium batteries

Mesoscale Analysis of the Electrolyte-Electrode Interface in All-Solid-State Li-Ion Batteries

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