Revealing the Impact of Cl Substitution on the Crystallization Behavior and Interfacial Stability of Superionic Lithium Argyrodites

Liu, Yu; Su, Han; Zhong, Yu; Wang, Xiuli; Xia, Xinhui; Gu, Changzhan; Tu, J.P.

doi:10.1002/adfm.202207978

Cited by 31 publications

(23 citation statements)

References 53 publications

(75 reference statements)

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“…To accelerate the interfacial reaction, the symmetric lithium cells was cycled at a current density of 0.5 mA cm −2 at 65 °C. As depicted in Figure S8 (Supporting Information), the binding energy for P, S, and Sn elements agrees well with the reported literatures [ 7,30,44a,46 ] for the pristine LPSC and LPSC‐10 samples. After 10 cycles, some reduced species like Li 3 P and Li 2 S were detected in the Li|LPSC interface, indicating the decomposition reaction of sulfide electrolyte with lithium anode.…”

Section: Resultssupporting

confidence: 89%

Sn‐O Dual‐Substituted Chlorine‐Rich Argyrodite Electrolyte with Enhanced Moisture and Electrochemical Stability

Zheng

et al. 2022

Adv Funct Materials

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Chlorine-rich argyrodite sulfides are one of the most promising solid electrolytes for all-solid-state batteries owing to their remarkable ionic conductivity and decent mechanical properties. However, their application has been limited by imperfections such as moisture instability and poor electrochemical stability. Herein, a Sn and O is proposed dual-substitution strategy in Li 5.4 PS 4.4 Cl 1.6 (LPSC) to improve the moisture tolerance and boost the electrochemical performance. The optimized composition of Li 5.5 (P 0.9 Sn 0.1 )(S 4.2 O 0.2 )Cl 1.6 (LPSC-10) sintered at 500 °C exhibits a room-temperature ionic conductivity of 8.7 mS cm −1 , an electrochemical window up to 5 V, a critical current density of 1.2 mA cm −2 , and stable lithium plating/striping. When exposed to humid air, LPSC-10 exhibits a small increment in total resistance, generates a mild amount of H 2 S gas, and displays favorable structure stability after heat treatment. The firstprinciples calculation confirms that the dual-substituted composition less tends to be hydrolyzed than the un-substituted one. The all-solid-state battery with LiIn|NMC811 electrodes presents a high initial discharge capacity of 103.6 mAh g −1 at 0.5 C rates and maintains 101.4 mAh g −1 at the 100th cycle, with a 97.9% capacity retention rate. The present study opens a new alternative for simultaneously promoting moisture and electrochemical stability.

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Section: Resultssupporting

confidence: 89%

Sn‐O Dual‐Substituted Chlorine‐Rich Argyrodite Electrolyte with Enhanced Moisture and Electrochemical Stability

Zheng

et al. 2022

Adv Funct Materials

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“…The key properties of common sulfide electrolytes have been listed in Table 1 [41] . Recently, several reports have demonstrated the effect of halogen content on the ionic conductivity, electrochemical stability, and air stability of lithium argyrodite electrolytes [37,38,42–45] . The halogen‐rich argyrodite electrolytes (Li 7.0− y PS 6.0− y X y , y >1.0) tend to exhibit greater potential than the halogen‐poor ones (Li 7.0− y PS 6.0− y X y , y ≤1.0).…”

Section: Introductionmentioning

confidence: 99%

“…[41] Recently, several reports have demonstrated the effect of halogen content on the ionic conductivity, electrochemical stability, and air stability of lithium argyrodite electrolytes. [37,38,[42][43][44][45] The halogen-rich argyrodite electrolytes (Li 7.0À y PS 6.0À y X y , y > 1.0) tend to exhibit greater potential than the halogen-poor ones (Li 7.0À y PS 6.0À y X y , y � 1.0). A generalization of halogen-rich argyrodite electrolytes will help us better understand their performance and developmental status as well as promote their application in ASSBs.…”

Section: Introductionmentioning

confidence: 99%

Halogen‐Rich Lithium Argyrodite Solid‐State Electrolytes: A Review

Peng

Cheng

et al. 2023

Batteries & Supercaps

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Exploring solid electrolytes (SEs) with high ionic conductivity, excellent chemical/electrochemical stability, and excellent compatibility with electrodes is important for promoting the development of all-solid-state batteries (ASSBs). Halogen-rich lithium argyrodite electrolytes have received a lot of attention recently due to their ultrahigh room-temperature lithium-ion conductivity and relatively low cost. In this review, the properties of the halogen-rich argyrodite electrolytes are presented in terms of their crystal structure, ionic conduction mechanism, and compatibilities with oxide cathode and Li-metal anode. Secondly, the preparation process of SE film and the performances of ASSBs based on this electrolyte are summarized. Finally, the challenges and the next research directions of the electrolytes are proposed. Halogen-rich lithium argyrodite electrolytes are one of the promising sulfide electrolytes, the collation of this paper can provide us with a better understanding of the current development status of this type of electrolyte and advance their further development.Lithium argyrodite electrolytes Li 6 PS 5 X (X = Cl, Br, I) with cubic crystal structures (F43m), which are composed of PS 4 3À tetrahedra. [46][47][48][49][50] The S 2À and X À anions are disordered on the 4a and 4d (4c) sites in the lattice, while the Li + ion sites form cagelike polyhedra around them. The results of molecular dynamics [a] Dr.

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“…Among TMSs, manganese sulfide (MnS) has the advantages of being ecofriendly, low cost and has a high theoretical capacity (616 mAh g −1 ). Especially, its redox potential is lower than those of other TMSs [ 12 , 13 , 14 , 15 , 16 , 17 ]. In spite of these advantages, MnS is still subjected to common problems of TMSs.…”

Section: Introductionmentioning

confidence: 98%

Nanocapsule of MnS Nanopolyhedron Core@CoS Nanoparticle/Carbon Shell@Pure Carbon Shell as Anode Material for High-Performance Lithium Storage

et al. 2023

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MnS has been explored as an anode material for lithium-ion batteries due to its high theoretical capacity, but low electronic conductivity and severe volume change induce low reversible capacity and poor cycling performance. In this work, the nanocapsule consisting of MnS nanopolyhedrons confined in independent, closed and conductive hollow polyhedral nanospheres is prepared by embedding MnCO3 nanopolyhedrons into ZIF-67, followed by coating of RF resin and gaseous sulfurization/carbonization. Benefiting from the unique nanocapsule structure, especially inner CoS/C shell and outer pure C shell, the MnS@CoS/C@C composite as anode material presents excellent cycling performance (674 mAh g−1 at 1 A g−1 after 300 cycles; 481 mAh g−1 at 5 A g−1 after 300 cycles) and superior rate capability (1133.3 and 650.6 mAh g−1 at 0.1 and 4 A g−1), compared to the control materials (MnS and MnS@CoS/C) and other MnS composites. Kinetics measurements further reveal a high proportion of the capacitive effect and low reaction impedance of MnS@CoS/C@C. SEM and TEM observation on the cycled electrode confirms superior structural stability of MnS@CoS/C@C during long-term cycles. Excellent lithium storage performance and the convenient synthesis strategy demonstrates that the MnS@CoS/C@C nanocapsule is a promising high-performance anode material.

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Revealing the Impact of Cl Substitution on the Crystallization Behavior and Interfacial Stability of Superionic Lithium Argyrodites

Cited by 31 publications

References 53 publications

Sn‐O Dual‐Substituted Chlorine‐Rich Argyrodite Electrolyte with Enhanced Moisture and Electrochemical Stability

Sn‐O Dual‐Substituted Chlorine‐Rich Argyrodite Electrolyte with Enhanced Moisture and Electrochemical Stability

Halogen‐Rich Lithium Argyrodite Solid‐State Electrolytes: A Review

Nanocapsule of MnS Nanopolyhedron Core@CoS Nanoparticle/Carbon Shell@Pure Carbon Shell as Anode Material for High-Performance Lithium Storage

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