Sheet-type Li6PS5Cl-infiltrated Si anodes fabricated by solution process for all-solid-state lithium-ion batteries

Kim, Dong Hyeon; Lee, Yong Sang; Song, Yong Bae; Park, Jun Woo; Lee, Sang Min; Jung, Yoon Seok

doi:10.1016/j.jpowsour.2019.04.028

Cited by 100 publications

(68 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Subsequent cold-pressing resulted in a uniform coating, ultimately not only reducing the SE wt %, but also improving the kinetics of charge transfer (Figure 23d). 204,205 The LPSClinfiltrated LiCoO 2 and graphite electrodes exhibited capacities of 141 and 364 mAh/g, respectively, at 0.1 C and 30°C, which are much higher than the values achieved with conventional drymixed and slurry-mixed electrodes. 204 Very recently, a dry impact-blending process (known as "hybridizing") was used for conformal coatings; NCM cathode and Na 2 SO 4 SE were used as the model compounds.…”

Section: Conformal Interfacementioning

confidence: 90%

Interfaces and Interphases in All-Solid-State Batteries with Inorganic Solid Electrolytes

et al. 2020

View full text Add to dashboard Cite

All-solid-state batteries (ASSBs) have attracted enormous attention as one of the critical future technologies for safe and high energy batteries. With the emergence of several highly conductive solid electrolytes in recent years, the bottleneck is no longer Li-ion diffusion within the electrolyte. Instead, many ASSBs are limited by their low Coulombic efficiency, poor power performance, and short cycling life due to the high resistance at the interfaces within ASSBs. Because of the diverse chemical/physical/mechanical properties of various solid components in ASSBs as well as the nature of solid−solid contact, many types of interfaces are present in ASSBs. These include loose physical contact, grain boundaries, and chemical and electrochemical reactions to name a few. All of these contribute to increasing resistance at the interface. Here, we present the distinctive features of the typical interfaces and interphases in ASSBs and summarize the recent work on identifying, probing, understanding, and engineering them. We highlight the complicated, but important, characteristics of interphases, namely the composition, distribution, and electronic and ionic properties of the cathode−electrolyte and electrolyte−anode interfaces; understanding these properties is the key to designing a stable interface. In addition, conformal coatings to prevent side reactions and their selection criteria are reviewed. We emphasize the significant role of the mechanical behavior of the interfaces as well as the mechanical properties of all ASSB components, especially when the soft Li metal anode is used under constant stack pressure. Finally, we provide full-scale (energy, spatial, and temporal) characterization methods to explore, diagnose, and understand the dynamic and buried interfaces and interphases. Thorough and in-depth understanding on the complex interfaces and interphases is essential to make a practical high-energy ASSB.

show abstract

Section: Conformal Interfacementioning

confidence: 90%

Interfaces and Interphases in All-Solid-State Batteries with Inorganic Solid Electrolytes

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Since Liang and co‐workers synthesized nanoporous β‐Li 3 PS 4 (0.16 mS cm −1 ) by liquid‐phase synthesis, which is otherwise unobtainable by conventional synthetic methods (γ‐Li 3 PS 4 , >10 −6 S cm −1 ), extensive efforts in liquid‐phase synthesis and solution process have led to the identification and development of new materials, such as Li 7 P 2 S 8 I (0.6 mS cm −1 ), 0.4 LiI‐0.6 Li 4 SnS 4 (0.4 mS cm −1 ), and argyrodite high‐temperature phase Li 7 PS 6 (0.1 mS cm −1 ) . Furthermore, the wet‐chemical routes provide new potentially advantageous features of mass production and morphology/size control, and new opportunities for the fabrication of all‐solid‐state batteries, such as SE coating on active materials, SE‐infiltrated electrodes, and wet‐tailored electrodes …”

Section: Figurementioning

confidence: 99%

Wet‐Chemical Tuning of Li_3−xPS₄ (0≤x≤0.3) Enabled by Dual Solvents for All‐Solid‐State Lithium‐Ion Batteries

Lee

et al. 2019

ChemSusChem

Self Cite

View full text Add to dashboard Cite

All-solid-state lithium-ion batteries (ASLBs) employing sulfide solid electrolytes are attractive next-generationr echargeable batteries that could offer improved safety and energy density. Recently,w et syntheses or processes for sulfides olid electrolyte materials have opened opportunities to explore new materials and practical fabrication methodsf or ASLBs. An ew wetchemicalr oute fort he synthesis of Li-deficient Li 3Àx PS 4 (0 x 0.3) has been developed, which is enabled by dual solvents. Owing to its miscibility with tetrahydrofuran and ability to dissolve elemental sulfur, o-xylene as ac osolvent facilitatest he wet-chemical synthesis of Li 3Àx PS 4 .Li 3Àx PS 4 (0 x 0.15) derived by using dual solvents shows Li + conductivity of approximately 0.2 mS cm À1 at 30 8C, in contrastt o0 .034 mS cm À1 for a sample obtained by using ac onventional single solvent (tetrahydrofuran, x = 0.15). The evolution of the structure for Li 3Àx PS 4 is also investigatedb yc omplementary analysis using X-ray diffraction,R aman, and X-ray photoelectrons pectroscopy measurements. LiCoO 2 /Li-In ASLBs employing Li 2.85 PS 4 obtained by using dual solvents exhibit ar eversiblec apacity of 130 mA hg À1 with good cycle retention at 30 8C, outperforming cells with Li 2.85 PS 4 obtained by using ac onventional single solvent.[a] Dr.

show abstract

“…To integrate SEs into large‐scale ASLBs for mass production, sheet‐type electrodes and SE films are required. [ 24–33 ] For this, it is necessary to use soft polymeric binders to avoid delamination and to supplement the brittleness of the inorganic components of the electrode active materials and SEs. [ 34–36 ] Moreover, stresses generated by volumetric strains in electrode active materials upon repeated cycling can be buffered by the polymeric binders.…”

Section: Introductionmentioning

confidence: 99%

Tailoring Slurries Using Cosolvents and Li Salt Targeting Practical All‐Solid‐State Batteries Employing Sulfide Solid Electrolytes

Kim

Jun

et al. 2021

Advanced Energy Materials

Self Cite

View full text Add to dashboard Cite

classes of materials, including sulfides (e.g., Li 5.5 PS 4.5 Cl 1.5 : [14,15] ≈10 mS cm −1 ), oxides (e.g., Li 7 La 3 Zr 2 O 12 : [16] 0.5 mS cm −1 ), closo-borates (e.g., 0 . 7 L i ( C B 9 H 10 ) -0 . 3 L i ( C B 11 H 12 ) : [ 12,17] 6.7 mS cm −1 ), and halides (e.g., Li 3 YCl 6 : [18,19] 0.5 mS cm −1 , Li 2.25 Zr 0.75 Fe 0.25 Cl 6 : [20] 1 mS cm −1 ). Furthermore, consideration of multiple aspects, such as mechanical sinterability, cost, and lightness (e.g., Li 6 PS 5 Cl: [14] 1.86 g cm −3 , Li 7 La 3 Zr 2 O 12 : [21] 5.11 g cm −3 , Li 3 YCl 6 : [18] 2.43 g cm −3 ), indicates that sulfide materials are highly competitive. [14,22,23] To integrate SEs into large-scale ASLBs for mass production, sheet-type electrodes and SE films are required. [24][25][26][27][28][29][30][31][32][33] For this, it is necessary to use soft polymeric binders to avoid delamination and to supplement the brittleness of the inorganic components of the electrode active materials and SEs. [34][35][36] Moreover, stresses generated by volumetric strains in electrode active materials upon repeated cycling can be buffered by the polymeric binders. [34,36,37] However, the introduction of even a small amount of polymeric binder (e.g., 1-2 wt%) in composite electrodes severely degrades the electrochemical performance of ASLBs (e.g., as much as ≈30 mA h g −1 of capacity loss for LiNi 0.6 Co 0.2 Mn 0.2 O 2 electrodes), due to the disruption of interfacial Li + contact. [27,34,38] To address this issue, several approaches have been introduced. Yamamoto and coworkers reported that a binder-free sheet-type battery fabricated using thermally decomposable polymers of poly(propylene carbonate) provided good performance, [39] but at the expense of the mechanical properties of the battery. Moreover, it was shown that it is possible to use small amounts of binders via a dry process employing a fibrous polytetrafluoroethylene binder. [40,41] However, a wet-slurry process for ASLBs is still imperative, as it could take advantage of the already-developed manufacturing infrastructure for LIBs.Recently, our group reported the preparation of Li + conductive polymeric binders based on solvate ionic liquids (SILs), which are a solvent-salt complex of Li salt and glyme, such as Li(G3) TFSI (G3: triethylene glycol dimethyl ether, LiTFSI: lithium bis(trifluoromethanesulfonyl)imide). [34] The use of solvents with an intermediate polarity such as dibromomethane (DBM) for Polymeric binders that can undergo slurry fabrication and minimize the disruption of interfacial Li+ contact are imperative for sheet-type electrodes and solid electrolyte films in practical all-solid-state Li batteries (ASLBs). Although dry polymer electrolytes (DPEs) are a plausible alternative, their use is complicated by the severe reactivity of sulfide solid electrolytes and the need to dissolve Li salts. In this study, a new scalable fabrication protocol for a Li + -conductive DPE-type binder, nitrile-butadiene rubber (NBR)-LiTFSI, is reported. The less-polar dibromomethane and more-polar hexyl b...

show abstract

Sheet-type Li6PS5Cl-infiltrated Si anodes fabricated by solution process for all-solid-state lithium-ion batteries

Cited by 100 publications

References 63 publications

Interfaces and Interphases in All-Solid-State Batteries with Inorganic Solid Electrolytes

Interfaces and Interphases in All-Solid-State Batteries with Inorganic Solid Electrolytes

Wet‐Chemical Tuning of Li_3−xPS₄ (0≤x≤0.3) Enabled by Dual Solvents for All‐Solid‐State Lithium‐Ion Batteries

Tailoring Slurries Using Cosolvents and Li Salt Targeting Practical All‐Solid‐State Batteries Employing Sulfide Solid Electrolytes

Contact Info

Product

Resources

About

Sheet-type Li6PS5Cl-infiltrated Si anodes fabricated by solution process for all-solid-state lithium-ion batteries

Cited by 100 publications

References 63 publications

Interfaces and Interphases in All-Solid-State Batteries with Inorganic Solid Electrolytes

Interfaces and Interphases in All-Solid-State Batteries with Inorganic Solid Electrolytes

Wet‐Chemical Tuning of Li3−xPS4 (0≤x≤0.3) Enabled by Dual Solvents for All‐Solid‐State Lithium‐Ion Batteries

Tailoring Slurries Using Cosolvents and Li Salt Targeting Practical All‐Solid‐State Batteries Employing Sulfide Solid Electrolytes

Contact Info

Product

Resources

About

Wet‐Chemical Tuning of Li_3−xPS₄ (0≤x≤0.3) Enabled by Dual Solvents for All‐Solid‐State Lithium‐Ion Batteries