Review on solid electrolytes for all-solid-state lithium-ion batteries

Zheng, Feng; Kotobuki, Masashi; Song, Shufeng; Lai, M.O.; Li, Lü

doi:10.1016/j.jpowsour.2018.04.022

Cited by 1,066 publications

(767 citation statements)

References 145 publications

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“…Fast lithium and sodium ion conductors composed of earth abundant elements as potential components of all solid‐state batteries attract immense interest . Recently, several phosphidosilicates with isolated or condensed SiP 4 tetrahedra have demonstrated lithium or sodium ion conductivity, for example Li 8 SiP 4 , Li 2 SiP 2 ,, LiSi 2 P 3 , and the series Na 23 Si 9 n +19 P 12 n +33 ( n = 0–3) .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Structure of the Sodium Phosphidosilicate Na₂SiP₂

et al. 2020

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Ion conductors of light alkaline metals based on earth‐abundant elements are important components for all‐solid‐state batteries. The new sodium‐rich phosphidosilicate Na2SiP2 was synthesized by solid state reaction of stoichiometric amounts of the elements at 973 K and characterized by single‐crystal X‐ray diffraction (space group Pccn (no. 56), a = 12.7929(5) Å, b = 22.3109(9) Å, c = 6.0522(2) Å and Z = 16) and solid‐state NMR under MAS conditions. The compound forms dark‐red twinned crystals, and its crystal structure contains edge‐sharing SiP4 tetrahedra connected to infinite ∞1[SiP4/2] chains. The sodium ions between the chains are fairly mobile. Electrochemical impedance spectroscopy shows a total ionic conductivity of σ(Na+, 373 K) = 2.3 ? 10–6 Scm–1 with an activation energy of Ea = 0.43 eV, and the galvanostatic polarization reveals mixed conduction behavior with a transference number of 0.8.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Structure of the Sodium Phosphidosilicate Na₂SiP₂

et al. 2020

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“…First, the voltage window of a liquid electrolyte is narrow, which limits the supercapacitor energy density. [11][12][13] However, the low power delivery and high interfacial resistance between the electrolyte and the electrode mean that a solid electrolyte is far from practical use. [9] Second, a solid-liquid interface burdens serious side reactions which reduce the cycle ability and increase the selfdischarge rate.…”

Section: Doi: 101002/aenm201803715mentioning

confidence: 99%

A Desolvated Solid–Solid Interface for a High‐Capacitance Electric Double Layer

Wang

Shan

et al. 2019

Advanced Energy Materials

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Understanding the electric double layer is essential for achieving efficient electrochemical energy storage technologies. A conventional solid–liquid electrode interface suffers from serious self‐discharge and a narrow voltage window, which makes the development of a solid–solid interface imperative. However, an in‐depth understanding of the electric double layer with a solid–solid interface is lacking. Here, a solid–solid interfacial electric double layer is proposed with excellent electrochemical performance. The solid layer is constructed by the electrochemical decomposition of lithium difluoro(oxalate)borate, which provides a desolvated environment for the establishment of a electric double layer. This makes a stronger interaction between the electrode surface and the ions. Based on this unique property, it is found that the solid–solid interfacial electric double layer has an increased capacitance, which suggests a way to develop high‐energy electrochemical capacitors.

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“…Solid state ion conductors are very promising candidates to replace current state‐of‐the‐art liquid electrolytes in next generation all‐solid‐state batteries (ASSB). The challenges involved with their application in all‐solid‐state batteries (ASSB) as well as recent progress in the field are summarized in a number of excellent publications and reviews …”

Section: Figurementioning

confidence: 99%

Stabilization of Highly Conductive Lithium Argyrodites by Means of Lithium Substitution: The Case of Li₆Fe_0.5PS₆

Schneider

Sedlmaier

et al. 2019

ChemistrySelect

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All‐solid‐state‐batteries (ASSB) are promising candidates for next generation lithium batteries providing high energy density and safety levels. Their success crucially depends on the properties of the available solid electrolyte materials, ideally offering sufficient conductivities in combination with stability against decomposition over a large electrochemical window. Therefore, the search for solid electrolytes with novel compositions remains of high interest. In this work we present a strategy to stabilize highly conductive lithium argyrodites by means of lithium substitution. This is different from the previously described possibilities to obtain stable structures by either substituting phosphorous or sulfide anions in the parent compound Li7PS6. This approach offers access to a new array of solid electrolyte candidates with an argyrodite‐type crystal structure. Conductivities of up to 1.4⋅10−4 S/cm can be obtained for Fe‐substituted materials of general composition Li7‐2xFexPS6.

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Review on solid electrolytes for all-solid-state lithium-ion batteries

Cited by 1,066 publications

References 145 publications

Synthesis and Structure of the Sodium Phosphidosilicate Na₂SiP₂

Synthesis and Structure of the Sodium Phosphidosilicate Na₂SiP₂

A Desolvated Solid–Solid Interface for a High‐Capacitance Electric Double Layer

Stabilization of Highly Conductive Lithium Argyrodites by Means of Lithium Substitution: The Case of Li₆Fe_0.5PS₆

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Review on solid electrolytes for all-solid-state lithium-ion batteries

Cited by 1,066 publications

References 145 publications

Synthesis and Structure of the Sodium Phosphidosilicate Na2SiP2

Synthesis and Structure of the Sodium Phosphidosilicate Na2SiP2

A Desolvated Solid–Solid Interface for a High‐Capacitance Electric Double Layer

Stabilization of Highly Conductive Lithium Argyrodites by Means of Lithium Substitution: The Case of Li6Fe0.5PS6

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Synthesis and Structure of the Sodium Phosphidosilicate Na₂SiP₂

Synthesis and Structure of the Sodium Phosphidosilicate Na₂SiP₂

Stabilization of Highly Conductive Lithium Argyrodites by Means of Lithium Substitution: The Case of Li₆Fe_0.5PS₆