High loading CuS-based cathodes for all-solid-state lithium sulfur batteries with enhanced volumetric capacity

Hosseini, Seyed Milad; Varzi, Alberto; Ito, Seiya; Aihara, Yûichi; Passerini, Stefano

doi:10.1016/j.ensm.2020.01.022

Cited by 75 publications

(38 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In general, increasing the cathode/electrolyte contact area is crucial to ensure efficient solid-solid contact (Fig. 4g and h) [169], which is fundamental to achieve full active material utilization at high areal loadings (thick electrodes) [182][183][184], and reduces the amount of solid electrolyte required in the cathode composite. Obtaining a large contact area is possible thanks to mechanical ball milling of the active material, carbon black, and the inorganic solid electrolyte [118,169].…”

Section: (Caption On Next Page)mentioning

confidence: 99%

Current status and future perspectives of lithium metal batteries

Varzi

Thanner

Scipioni

et al. 2020

Journal of Power Sources

Self Cite

128

View full text Add to dashboard Cite

show abstract

Section: (Caption On Next Page)mentioning

confidence: 99%

Current status and future perspectives of lithium metal batteries

Varzi

Thanner

Scipioni

et al. 2020

Journal of Power Sources

Self Cite

128

View full text Add to dashboard Cite

show abstract

“…[20] In a recent systematic work from Hosseini et al on CuS/ sulfur/carbon/SE electrodes, the CuS/SE electrode cycled in a solid-state cell with LiIn as anode and LiI-Li 3 PS 4 as SE showed a specific capacity significantly exceeding the theoretical value of CuS during charging and cycling. [28] This increased capacity is due to redox activity of the LiI-Li 3 PS 4 SE when being ball-milled during electrode preparation. [29] At this point, it is important to note that Hosseini et al used ball milling (with 50 wt% SE) for preparing the composite electrode whereas we used hand grinding.…”

Section: Electrochemical Performance Of Solid-state Li/cus Cellsmentioning

confidence: 99%

Macroscopic Displacement Reaction of Copper Sulfide in Lithium Solid‐State Batteries

Santhosha

Nazer

Koerver

et al. 2020

Advanced Energy Materials

View full text Add to dashboard Cite

Next to polymer electrolytes, [2] inorganic Li-ion SEs have been developed in recent years. [3] Thiophosphates, garnets, or argyrodites are the most promising inorganic materials classes, each having particular advantages and disadvantages. Despite the considerable improvement in Li + conductivity (some structures exhibit a higher conductivity than liquid electrolytes) the limited electrochemical stability window of SEs often leads to side reactions with low potential negative and high potential positive materials. [4] For this reason, in research studies the lithium negative electrode is often replaced by an In-Li alloy as this alloy provides a more stable interface with many SEs and prevents dendrite formation. [5] The use of Li as negative electrode in SSBs, however, remains an important goal as this is one of the few options to significantly increase the specific energy (Wh kg −1) and energy density (Wh L −1) of the cell. Considering positive electrode materials, the large family of layered oxides is mostly studied as their overall superior behavior is well-known from LIBs. However, also conversion-type materials such as TiS 2 , [6] CoS, [7] FeS 2 , [8] MoS 2 , [9] and NiS [10] are studied due to their much higher specific capacity. An important aspect of SSBs is the preparation of dense cathode composite structures containing SE, active material and, where needed, additives. Close contact between the phases and a suitable 3D structure is required to minimize the Copper sulfide (CuS) is an attractive electrode material for batteries, thanks to its intrinsic mixed conductivity, ductility and high theoretical specific capacity of 560 mAh g −1. Here, CuS is studied as cathode material in lithium solid-state batteries with an areal loading of 8.9 mg cm −2 that theoretically corresponds to 4.9 mAh cm −2. The configuration of the cell is LiLi 3 PS 4 [CuS (70 wt%) + Li 3 PS 4 (30 wt%)]. No conductive additive is used. CuS undergoes a displacement reaction with lithium, leading to macroscopic phase separation between the discharge products Cu and Li 2 S. In particular, Cu forms a network of micrometer-sized, well-crystallized particles that seems to percolate through the electrode. The formed copper is visible to the naked eye. The initial specific discharge capacity at 0.1 C is 498 mAh g(CuS) −1 , i.e., 84% of its theoretical value. The initial Coulomb efficiency (ICE) reaches 95%, which is higher compared to standard carbonate-based liquid electrolytes for the same cell chemistry (≈70%). After 100 cycles, the specific capacity reaches 310 mAh g(CuS) −1. With the current composition, the cell provides 58.2 Wh kg −1 at a power density of 7 W kg −1 , which is superior compared to other transition metal sulfide cathodes.

show abstract

“…The assembled full Li–S battery could deliver a large reversible capacity of 830 mAh g −1 after 60 cycles at a current density of 50 mA g −1 . Apart from S and Li 2 S, transition‐metal sulfides, such as TiS 3 , [ 187 ] FeS, [ 188 ] CoS 2 , [ 189 ] NiS, [ 190 ] CuS, [ 191 ] and MoS 2 , [ 192 ] were also reported as cathode materials for all‐solid‐state Li–S batteries. These materials showed better conductive properties, which facilitates to establish a low‐resistance at the cathode/solid–electrolyte interface.…”

Section: Interface Challenges and Tailoring Strategiesmentioning

confidence: 99%

Interface Aspects in All‐Solid‐State Li‐Based Batteries Reviewed

Chen

Jiang

Zhou

et al. 2021

Advanced Energy Materials

View full text Add to dashboard Cite

Extensive efforts have been made to improve the Li‐ionic conductivity of solid electrolytes (SE) for developing promising all‐solid‐state Li‐based batteries (ASSB). Recent studies suggest that minimizing the existing interface problems is even more important than maximizing the conductivity of SE. Interfaces are essential in ASSB, and their properties significantly influence the battery performance. Interface problems, arising from both physical and (electro)chemical material properties, can significantly inhibit the transport of electrons and Li‐ions in ASSB. Consequently, interface problems may result in interlayer formation, high impedances, immobilization of moveable Li‐ions, loss of active host sites available to accommodate Li‐ions, and Li‐dendrite formation, all causing significant storage capacity losses and ultimately battery failures. The characteristic differences of interfaces between liquid‐ and solid‐type Li‐based batteries are presented here. Interface types, interlayer origin, physical and chemical structures, properties, time evolution, complex interrelations between various factors, and promising interfacial tailoring approaches are reviewed. Furthermore, recent advances in the interface‐sensitive or depth‐resolved analytical tools that can provide mechanistic insights into the interlayer formation and strategies to tailor the interlayer formation, composition, and properties are discussed.

show abstract

High loading CuS-based cathodes for all-solid-state lithium sulfur batteries with enhanced volumetric capacity

Cited by 75 publications

References 36 publications

Current status and future perspectives of lithium metal batteries

Current status and future perspectives of lithium metal batteries

Macroscopic Displacement Reaction of Copper Sulfide in Lithium Solid‐State Batteries

Interface Aspects in All‐Solid‐State Li‐Based Batteries Reviewed

Contact Info

Product

Resources

About