Exploring the concordant solid-state electrolytes for all-solid-state lithium-sulfur batteries

Zhu, Xinxin; Jiang, Wei; Zhao, Shu; Huang, Renzhi; Ling, Min; Liang, Chengdu; Wang, Liguang

doi:10.1016/j.nanoen.2022.107093

Cited by 40 publications

(40 citation statements)

References 40 publications

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“…To evaluate the practical feasibility of LSS/PEO–LiI, Li–Li cells were first assembled and measured to investigate the interface stability. In Figure a–c, the Nyquist plot obtained from electrochemical impedance spectroscopy (EIS) mainly showed a single semicircle at the high frequency region, illustrating the Li/electrolyte interface as an ion-conducting SEI layer. ,, In the case of the LSS electrolyte, the interfacial layer continued to grow, leaving the impedance significantly enlarging with the increase of the resting time. The overall resistance after 24 h resting was up to ∼25 000 Ohms (Figure a).…”

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confidence: 99%

Stabilizing Li₄SnS₄ Electrolyte from Interface to Bulk Phase with a Gradient Lithium Iodide/Polymer Layer in Lithium Metal Batteries

Sheng

Jin

et al. 2022

Nano Lett.

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Sulfide electrolytes promise superior ion conduction in all-solid-state lithium (Li) metal batteries, while suffering harsh hurdles including interior dendrite growth and instability against Li and moist air. A prerequisite for solving such issues is to uncover the nature of the Li/sulfide interface. Herein, air-stable Li 4 SnS 4 (LSS) as a prototypical sulfide electrolyte is selected to visualize the dynamic evolution and failure of the Li/sulfide interface by cryo-electron microscopy. The interfacial parasitic reaction (2Li + 2Li 4 SnS 4 = 5Li 2 S + Sn 2 S 3 ) is validated by direct detection of randomly distributed Li 2 S and Sn 2 S 3 crystals. A bifunctional buffering layer is consequently introduced by selfdiffusion of halide into LSS. Both the interface and the grain boundaries in LSS have been stabilized, eliminating the growing path of Li dendrites. The buffering layer enables the durability of Li symmetric cell (1500 h) and high-capacity retention of the LiFePO 4 full-cell (95%). This work provides new insights into the hierarchical design of sulfide electrolytes.

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confidence: 99%

Stabilizing Li₄SnS₄ Electrolyte from Interface to Bulk Phase with a Gradient Lithium Iodide/Polymer Layer in Lithium Metal Batteries

Sheng

Jin

et al. 2022

Nano Lett.

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“…S14 (ESI†). 7,16,59–63 The all-solid-state LSB with a LiI layer in this work showed the highest discharge voltage of 1.85 V due to the use of a Li metal anode and an ultrahigh areal capacity of 8.9 mA h cm −2 . These features contributed to the much higher specific energy of the Li/LiI/LGPS/S cell than the other listed all-solid-state LSBs.…”

Section: Resultsmentioning

confidence: 78%

Realizing the compatibility of a Li metal anode in an all-solid-state Li−S battery by chemical iodine–vapor deposition

Duan

Cheng

et al. 2022

Energy Environ. Sci.

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“…[2b,11] Among them, the use of solid electrolyte instead of LE can not only solve the safety problems of lithium dendrite growth and electrolyte flammability, but also completely solve the shuttle problem. [12] This is obviously an excellent way to enhance the comprehensive properties of LiÀ S cells. Solid electrolytes have been broadly classified in three kinds: solid inorganic electrolytes (SIE), [13] solid polymer electrolytes (SPE) [14] and solid composite electrolyte (SCE).…”

Section: Introductionmentioning

confidence: 99%

“…Polymer substrates commonly used in GPE include poly(ethylene oxide) (PEO), [23] polyacrylonitrile (PAN), [24] Poly(vinylidene fluoride) (PVDF), [25] poly(vinylidene fluoride)‐hexafluoropropylene (P(VDF‐HFP)), [26] and poly(methyl methacrylate) (PMMA), [27] etc. Several recently published reviews are devoted to a systematic summary and review of GPE for Li−S cells from perspective of classification of different polymer matrices [12a,18,20–21,28] …”

Section: Introductionmentioning

confidence: 99%

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Emerging Strategies for Gel Polymer Electrolytes with Improved Dual‐Electrode Side Regulation Mechanisms for Lithium‐Sulfur Batteries

Cui

Yuan

et al. 2022

Chemistry An Asian Journal

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Although GPE still has the risk of shuttling due to the incomplete removal of liquid electrolytes compared to SPE, which has the most promise of eliminating polysulfide shuttling, researchers have made abundant efforts to eliminate as much of the polysulfide shuttling effect as possible while retaining the unique advantages of GPE. For example, physical barrier to polysulfides by improving the pore size of GPE or fabricating multidimensional structures by different preparation methods. Further chemical adsorption of polysulfides by adding nanofillers to increase polar sites to create polar‐polar interactions with polysulfides or to create Lewis acid‐base interactions. However, although chemical adsorption can indeed highly immobilize polysulfides, it still brings disadvantages such as loss of active material. Therefore, other researchers have employed GPE with ion‐selective permeability that has electrostatic repulsive force or steric hindrance to polysulfides to better inhibit polysulfide shuttling. However, modifying only the cathode side is not enough to enhance this overall properties of Li−S cells. These problems of poor Li+ transport, lithium dendrite growth, and poor SEI due to uneven lithium ion deposit on Li anode side still affect the overall performance of Li−S cells. Therefore, a GPE to improve these problems on the Li anode side is summarized below. Compared with an all‐solid electrolyte, GPE, which has a partially liquid electrolyte, clearly has advantages such as strong interfacial contact, good anode interface compatibility, and high flexibility. However, it is still not comparable to the ionic conductivity, etc. of pure liquid electrolyte only. Therefore, the problems on the lithium metal anode side are mainly focused on the lithium ion transport problems and the problems of lithium dendrite growth and inhomogeneous SEI at the lithium anode interface. Facing the problems in these two aspects, researchers have given many improvement solutions respectively. For the lithium ion transport problem, researchers have instead provided pathways for lithium ion transport by adding amorphous nanofibers or nanofillers to reduce the crystallinity of the polymer and improve the ionic conductivity. Alternatively, the migration number of lithium ions can be increased by limiting the anions in the electrolyte. As for the interfacial problems of lithium anodes, researchers have effectively suppressed the growth of lithium dendrites or inhomogeneous lithium plating/stripping phenomena mainly by adding nanofillers to increase the mechanical strength of GPE or by participating in the generation of SEI.

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Exploring the concordant solid-state electrolytes for all-solid-state lithium-sulfur batteries

Cited by 40 publications

References 40 publications

Stabilizing Li₄SnS₄ Electrolyte from Interface to Bulk Phase with a Gradient Lithium Iodide/Polymer Layer in Lithium Metal Batteries

Stabilizing Li₄SnS₄ Electrolyte from Interface to Bulk Phase with a Gradient Lithium Iodide/Polymer Layer in Lithium Metal Batteries

Realizing the compatibility of a Li metal anode in an all-solid-state Li−S battery by chemical iodine–vapor deposition

Emerging Strategies for Gel Polymer Electrolytes with Improved Dual‐Electrode Side Regulation Mechanisms for Lithium‐Sulfur Batteries

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Exploring the concordant solid-state electrolytes for all-solid-state lithium-sulfur batteries

Cited by 40 publications

References 40 publications

Stabilizing Li4SnS4 Electrolyte from Interface to Bulk Phase with a Gradient Lithium Iodide/Polymer Layer in Lithium Metal Batteries

Stabilizing Li4SnS4 Electrolyte from Interface to Bulk Phase with a Gradient Lithium Iodide/Polymer Layer in Lithium Metal Batteries

Realizing the compatibility of a Li metal anode in an all-solid-state Li−S battery by chemical iodine–vapor deposition

Emerging Strategies for Gel Polymer Electrolytes with Improved Dual‐Electrode Side Regulation Mechanisms for Lithium‐Sulfur Batteries

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Stabilizing Li₄SnS₄ Electrolyte from Interface to Bulk Phase with a Gradient Lithium Iodide/Polymer Layer in Lithium Metal Batteries

Stabilizing Li₄SnS₄ Electrolyte from Interface to Bulk Phase with a Gradient Lithium Iodide/Polymer Layer in Lithium Metal Batteries