Li 3 PO 4 -added garnet-type Li 6.5 La 3 Zr 1.5 Ta 0.5 O 12 for Li-dendrite suppression

Xu, Biyi; Li, Wenlong; Duan, Huanan; Wang, Haojing; Guo, Yiping; Li, Hua; Liu, Hezhou

doi:10.1016/j.jpowsour.2017.04.026

Cited by 164 publications

(111 citation statements)

References 39 publications

Supporting

Mentioning

107

Contrasting

Order By: Relevance

“…However, these researchers also reported that Li dendrites still appeared at higher current densities, indicating that more comprehensive and in-depth research is required. Furthermore, many new reports have been published to address interfacial engineering on LLZO [27,[202][203][204][205][206][207].…”

Section: Interface Between the Electrolyte And The Anodementioning

confidence: 99%

Solid-State Electrolytes for Lithium-Ion Batteries: Fundamentals, Challenges and Perspectives

Zhao

He³

et al. 2019

Electrochem. Energ. Rev.

287

206

View full text Add to dashboard Cite

With the rapid popularization and development of lithium-ion batteries, associated safety issues caused by the use of flammable organic electrolytes have drawn increasing attention. To address this, solid-state electrolytes have become the focus of research for both scientific and industrial communities due to high safety and energy density. Despite these promising prospects, however, solid-state electrolytes face several formidable obstacles that hinder commercialization, including insufficient lithium-ion conduction and surge transfer impedance at the interface between solid-state electrolytes and electrodes. Based on this, this review will provide an introduction into typical lithium-ion conductors involving inorganic, organic and inorganic-organic hybrid electrolytes as well as the mechanisms of lithium-ion conduction and corresponding factors affecting performance. Furthermore, this review will comprehensively discuss emerging and advanced characterization techniques and propose underlying strategies to enhance ionic conduction along with future development trends.

show abstract

Section: Interface Between the Electrolyte And The Anodementioning

confidence: 99%

Solid-State Electrolytes for Lithium-Ion Batteries: Fundamentals, Challenges and Perspectives

Zhao

He³

et al. 2019

Electrochem. Energ. Rev.

287

206

View full text Add to dashboard Cite

show abstract

“…We believe that this could be achieved by reducing the interfacial charge-transfer resistance further and by structural improvement of the garnet-type SE by decreasing the porosity [34,47,48], controlling grain size [41,44], and modifying the grain boundary [45,50].…”

Section: Discussionmentioning

confidence: 99%

“…Together with further examination of the propagation mechanism of Li dendrite into garnet-type SE, both the critical current density at which the short circuit occurs and the threshold in the capacity for Li deposition for stable cycling must be enhanced further to realize a solid-state battery with a garnet-type oxide SE and Li metal anode. We believe that this could be achieved by reducing the interfacial charge-transfer resistance further and by structural improvement of the garnet-type SE by decreasing the porosity [34,47,48], controlling grain size [41,44], and modifying the grain boundary [45,50].…”

Section: Stability Against LI Deposition and Dissolution Reaction At mentioning

confidence: 99%

Formation and Stability of Interface between Garnet-Type Ta-doped Li7La3Zr2O12 Solid Electrolyte and Lithium Metal Electrode

et al. 2018

View full text Add to dashboard Cite

Garnet-type Li 7-x La 3 Zr 2-x Ta x O 12 (LLZT) is considered a good candidate for the solid electrolyte in all-solid-state lithium batteries because of its reasonably high conductivity around 10 −3 S cm −1 at room temperature and stability against lithium (Li) metal with the lowest redox potential. In this study, we synthesized LLZT with a tantalum (Ta) content of 0.45 via a conventional solid-state reaction process and constructed a Li/LLZT/Li symmetric cell by attaching Li metal foils on the polished top and bottom surfaces of an LLZT pellet. We investigated the influence of heating temperatures and times on the interfacial charge-transfer resistance between LLZT and the Li metal electrode. In addition, the effect of the interface resistance on the stability for Li deposition and dissolution was examined using a galvanostatic cycling test. The lowest interfacial resistance of 25 Ω cm 2 at room temperature was obtained by heating at 175 • C (5 • C lower than the melting point of Li) for three to five hours. We confirmed that the current density at which the short circuit occurs in the Li/LLZT/Li cell via the propagation of Li dendrite into LLZT increases with decreasing interfacial charge transfer resistance.

show abstract

“…We then investigated the interfacial behaviors of garnet SSE with pure Li or Li–C composite using the method developed by Hu and co‐workers . In this work, we used garnet‐type Li 6.5 La 3 Zr 1.5 Ta 0.5 O 12 (LLZTO) pellet as the SSE due to its high conductivity . The detailed preparation process, phase information (Figure S3, Supporting Information), and ionic conductivity measurements of LLZTO (Figure S4, Supporting Information) were presented in Supporting Information.…”

mentioning

confidence: 99%

Lithium–Graphite Paste: An Interface Compatible Anode for Solid‐State Batteries

et al. 2019

View full text Add to dashboard Cite

cathodes, [10][11][12] silicon-based anodes, [13][14][15][16] and optimizing organic liquid electrolytes. [17,18] However, the safety challenges related to the electrolyte are serious because operation of LIBs is exothermic and organic liquid electrolytes mostly with ester carbonates are highly flammable, generating massive heat. [19,20] Dendritic lithium in LIB represents a further challenge considering internal short circuit would occur if the dendrite punctures the separator. [21,22] Therefore, solutions for safety of LIBs are urgently required.Inorganic ceramic solid-state electrolyte (SSE) provides an ideal alternative to liquid flammable electrolytes for the design of safe ASSBs, since ceramic SSE is nonflammable and it has adequate fracture toughness to prevent internal short circuit from lithium dendrite. [23][24][25] Furthermore, lithium metal anode, the ultimate anode with the highest specific capacity and lowest electrochemical potential has been demonstrated in ASSBs, which exhibited intrinsic safety under rigorous conditions. [26][27][28][29][30] In the search for SSEs, while most of the superionic conductors with conductivity >1 mS cm −1 are based on sulfides, such as Li 10 GeP 2 S 12 , [31,32] Li 9.54 Si 1.74 P 1.44 S 11.7 Cl 0.3 , [33] and Li 9.6 P 3 S 12 , [34] it has shown that garnet-type oxides are the most stable SSEs with lithium metal anode. [35][36][37][38][39] However, the lithium/garnet interface appeared to have a remarkably large impedance due to the poor interfacial contact. [40] This motivates a variety of studies to turn garnet from lithiophobic to lithiophilic by coating garnet with metal, [41][42][43][44] metal oxides, [45,46] semi-conductors, [47,48] polymer interlayers, [49,50] and graphite. [51] Although these approaches have shown great progress, they mainly addressed the interface issue from garnet side. As a result, ample opportunities remain on lithium metal side.Here we introduce a new strategy to synthesize a ceramic compatible lithium anode by using graphite additives. Our scheme to implement a lithium/garnet interface experiment is sketched in Figure 1. We find that pure lithium is not compatible with garnet, which is consistent with that expected for lithiophobic garnet surface and previous reports (Figure 1a). [52] On the other side, lithium-graphite (Li-C) composite presents lower fluidity and higher viscosity compared to pure Li. So the Li-C composite, like a paste, can be casted onto garnet and exhibits an intimate contact (Figure 1b). As expected, All-solid-state batteries (ASSBs) with ceramic-based solid-state electrolytes (SSEs) enable high safety that is inaccessible with conventional lithium-ion batteries. Lithium metal, the ultimate anode with the highest specific capacity, also becomes available with nonflammable SSEs in ASSBs, which offers promising energy density. The rapid development of ASSBs, however, is significantly hampered by the large interfacial resistance as a matched lithium/ ceramic interface that is not easy to pursue. Here, a lithium-graphite...

show abstract

Li 3 PO 4 -added garnet-type Li 6.5 La 3 Zr 1.5 Ta 0.5 O 12 for Li-dendrite suppression

Cited by 164 publications

References 39 publications

Solid-State Electrolytes for Lithium-Ion Batteries: Fundamentals, Challenges and Perspectives

Solid-State Electrolytes for Lithium-Ion Batteries: Fundamentals, Challenges and Perspectives

Formation and Stability of Interface between Garnet-Type Ta-doped Li7La3Zr2O12 Solid Electrolyte and Lithium Metal Electrode

Lithium–Graphite Paste: An Interface Compatible Anode for Solid‐State Batteries

Contact Info

Product

Resources

About