Design principles for zero-strain Li-ion cathodes

Zhao, Xinye; Tian, Yulin; Lun, Zhengyan; Cai, Zijian; Chen, Tina; Ouyang, Bin; Ceder, Gerbrand

doi:10.1016/j.joule.2022.05.018

Cited by 63 publications

(52 citation statements)

References 76 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…LiRh 2 O 4 contains [RhO 6 ] octahedra, and both t 2g and e g orbitals undergo the Jahn−Teller effect in the octahedral structure but to a much lesser extent in the case of t 2g electrons. 47 Furthermore, the relatively broad 4d orbital electrons in LiRh 2 O 4 have itinerant properties, and the Jahn−Teller transition of the Jahn−Teller active Rh 4+ (4d 5 ) ions was reduced. Consequently, in LiRh 2 O 4 , the Jahn−Teller effect and the related interfacial lattice strain were significantly reduced.…”

Section: Synthesis Of Novel Camsmentioning

confidence: 99%

“…The region between the layered structure and rock salt exhibited a gradual transition rather than abrupt structural changes, such as at a grain boundary. 47 have recently proposed the general principles that are advantageous for obtaining zero-strain cathodes. Additionally, they synthesized a zero-strain cathode material with a disordered rock salt structure.…”

Section: Synthesis Of Novel Camsmentioning

confidence: 99%

“…These strategies include applying a thin coating on the cathode surface using heterogeneous materials, 41−43 doping, 44,45 variation in the composition, 24,46 and synthesizing a new cathode material with reduced strain upon Li insertion/extraction. 37,47 This comprehensive review begins with a summary of the problems caused by the volumetric changes of the cathode and expected merits of zero-strain cathodes for LIB and Li-based ASSBs. Subsequently, various strategies for achieving zero-stain Li-ion cathodes in both LIB and Li-based ASSBs is reviewed.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Zero-Strain Cathodes for Lithium-Based Rechargeable Batteries: A Comprehensive Review

Park

Lee

et al. 2022

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

Cathode materials commonly experience volumetric changes that can reduce the cycle life of lithium-based rechargeable batteries. To improve stability in performance, materials must be designed to be structurally invariant throughout electrochemical cycling. Zero-strain cathode materials refer to those cathode materials that undergo negligible or zero volumetric changes during cell cycling. These can provide various benefits, including a high battery operating voltage, high capacity, and long-term stability. In this review, we summarize the problems of conventional cathode active materials originating from volumetric changes with the origin of strains and discuss the zero-strain behavior of the cathode. Recent advancements in the validation of engineering strategies to enhance cathode performance based on zero-strain behavior and identification of reaction mechanisms in zero-strain cathodes are highlighted. Further, analytical methods are introduced that can be used to demonstrate the strain behavior of cathodes with suppressed volumetric changes. Finally, a comprehensive outlook on the future direction of research on materials with zero-strain behavior is provided.

show abstract

Section: Synthesis Of Novel Camsmentioning

confidence: 99%

Section: Synthesis Of Novel Camsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Zero-Strain Cathodes for Lithium-Based Rechargeable Batteries: A Comprehensive Review

Park

Lee

et al. 2022

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

show abstract

“…11%), in which the phase transition is induced by fluoride-ion insertion into the rock-salt layer of Sr 3 Fe 2 O 5 F 2 . In the case of LIB cathodes, it has also been reported that the lattice volume change is very small for the (de)intercalation of lithium ions into random percolation sites in the rock-salt structure, compared with the lattice volume expansion associated with the (de)intercalation of lithium ions into a 2D layered rock-salt oxide cathode (e.g., layered LiCoO 2 (3.63%), cation-disordered rock salt Li 1.25 Nb 0.25 V 0.5 O 2 oxide (1%), and Li 1.25 V 0.55 Nb 0.2 O 1.9 F 0.1 oxyfluoride (0.7%)). Our finding that the volume change upon fluoride-ion insertion into perovskite layers is significantly smaller than that into the interlayer is expected to prove valuable for the development of cathodes for all-solid-state FIBs.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, it is necessary to develop material systems that undergo less volume expansion to serve as cathode materials for all-solid-state FIBs, but fewer examples of such materials have been reported than for lithium-ion secondary batteries, and the material design guidelines are yet to be established. In the case of LIB cathodes, the volume expansion has been reported to be more suppressed in disordered rock-salt-structured cathodes, in which the reaction proceeds by a percolation mechanism, than in layered rock-salt-structured cathodes. − We have focused on the previously unexplored volume expansion of FIB cathodes during the insertion and extraction of fluoride ions and attempted to clarify the relationship between the volume expansion and insertion sites using a model cathode material containing both two-dimensional (2D) interstitial sites and three-dimensional (3D) percolation sites.…”

Section: Introductionmentioning

confidence: 99%

Oxyfluoride Cathode for All-Solid-State Fluoride-Ion Batteries with Small Volume Change Using Three-Dimensional Diffusion Paths

Wang

Takami

et al. 2022

Chem. Mater.

View full text Add to dashboard Cite

All-solid-state fluoride-ion batteries (FIBs) are expected to become the next generation of battery systems owing to their outstanding energy storage characteristics. However, the volume expansion of the cathode that accompanies the insertion of fluoride ions remains an urgent issue to be addressed. Even if an intercalation-type cathode is applied in FIBs, fluorideion insertion into the interstitial sites of two-dimensional materials such as LaSrMnO 4 still leads to non-negligible volume expansion. Here, we report a novel intercalation-type material, Sr 3 Fe 2 O 5 F 2 , possessing the Ruddlesden−Popper structure as a cathode material for FIBs that features not only interstitial sites but also anion vacancies as three-dimensional (3D) percolation sites to accommodate fluoride ions. This material exhibits a relatively high capacity of 118 mAh g −1 and good cycling stability over 70 cycles. Fe 2+ /Fe 3+ redox reactions are responsible for charge compensation during the charging and discharging processes. The crystal structure during the charging process changes from Sr 3 Fe 2 O 5 F 0.46 to Sr 3 Fe 2 O 5 F 2 by using the 3D percolation sites with an extremely small volume change of approximately 0.17% and thereafter changes to Sr 3 Fe 2 O 5 F 3 with a P4/mmm symmetry by using interstitial sites with a large volume change of approximately 11%. Our findings should pave the way for the design of new cathodes with excellent cycling stability and minimal volume expansion based on the percolation mechanism.

show abstract

From Liquid to Solid‐State Batteries: Li‐Rich Mn‐Based Layered Oxides as Emerging Cathodes with High Energy Density

Kong,

Zhao,

Sun

et al. 2023

Advanced Materials

View full text Add to dashboard Cite

Li‐rich Mn‐based (LRMO) cathode materials have attracted widespread attention due to their high specific capacity, energy density, and cost‐effectiveness. However, challenges such as poor cycling stability, voltage deca,y and oxygen escape limit their commercial application in liquid Li‐ion batteries. Consequently, there is a growing interest in the development of safe and resilient all‐solid‐state batteries (ASSBs), driven by their remarkable safety features and superior energy density. ASSBs based on LRMO cathodes offer distinct advantages over conventional liquid Li‐ion batteries, including long‐term cycle stability, thermal and wider electrochemical windows stability, as well as the prevention of transition metal dissolution. This review aims to recapitulate the challenges and fundamental understanding associated with the application of LRMO cathodes in ASSBs. Additionally, it proposes the mechanisms of interfacial mechanical and chemical instability, introduces noteworthy strategies to enhance oxygen redox reversibility, enhances high‐voltage interfacial stability, and optimizes Li+ transfer kinetics. Furthermore, it suggests potential research approaches to facilitate the large‐scale implementation of LRMO cathodes in ASSBs.

show abstract

Design principles for zero-strain Li-ion cathodes

Cited by 63 publications

References 76 publications

Zero-Strain Cathodes for Lithium-Based Rechargeable Batteries: A Comprehensive Review

Zero-Strain Cathodes for Lithium-Based Rechargeable Batteries: A Comprehensive Review

Oxyfluoride Cathode for All-Solid-State Fluoride-Ion Batteries with Small Volume Change Using Three-Dimensional Diffusion Paths

From Liquid to Solid‐State Batteries: Li‐Rich Mn‐Based Layered Oxides as Emerging Cathodes with High Energy Density

Contact Info

Product

Resources

About