Recent Advancements in Li-Ion Conductors for All-Solid-State Li-Ion Batteries

Meesala, Yedukondalu; Jena, Anirudha; Chang, Ho; Liu, Ru‐Shi

doi:10.1021/acsenergylett.7b00849

Cited by 258 publications

(186 citation statements)

References 122 publications

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“…[15] Hence, the discovery,c haracterization, and optimization of lithium superionic conducting solid phases are among the main aspects of todaysbattery material research. [8,[16][17][18] Despite the clear advantage of ASSBs,a chieving Li-ion conductivity in SSEs comparable to that in liquid electrolytes (> 10 mS cm À1 ) is ademanding task. [9] In the last decades,different crystalline materials have been proven to act as lithium conductors such as perovskite-type structures, [19][20][21][22] lithium superionic conductor (LISICON)-type structures, [23][24][25][26] thio-LISICON-type structures and thiophosphates, [27][28][29][30][31][32] sodium superionic conductor (NASICON)-type structures, [33,34] garnet-type structures, [35][36][37] lithium argyrodites, [38] lithium borohydrides, [39] lithium nitrides, [40][41][42] lithium hydrides, [43] and lithium halides.…”

Section: Introductionmentioning

confidence: 99%

Fast Lithium Ion Conduction in Lithium Phosphidoaluminates

et al. 2020

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Solid electrolyte materials are crucial for the development of high‐energy‐density all‐solid‐state batteries (ASSB) using a nonflammable electrolyte. In order to retain a low lithium‐ion transfer resistance, fast lithium ion conducting solid electrolytes are required. We report on the novel superionic conductor Li9AlP4 which is easily synthesised from the elements via ball‐milling and subsequent annealing at moderate temperatures and which is characterized by single‐crystal and powder X‐ray diffraction. This representative of the novel compound class of lithium phosphidoaluminates has, as an undoped material, a remarkable fast ionic conductivity of 3 mS cm−1 and a low activation energy of 29 kJ mol−1 as determined by impedance spectroscopy. Temperature‐dependent 7Li NMR spectroscopy supports the fast lithium motion. In addition, Li9AlP4 combines a very high lithium content with a very low theoretical density of 1.703 g cm−3. The distribution of the Li atoms over the diverse crystallographic positions between the [AlP4]9− tetrahedra is analyzed by means of DFT calculations.

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Section: Introductionmentioning

confidence: 99%

Fast Lithium Ion Conduction in Lithium Phosphidoaluminates

et al. 2020

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“…However, drawbacks do exist with these electrolytes which limit their applications, including poor compatibility between the solid inorganic electrolyte and the electrode (e.g., stability against Li [35,36] and high-voltage stability [37]), poor air stability [38], high interface resistance [39] and complex synthesis processes. Several excellent reviews on inorganic ceramic electrolytes are available in literature [40][41][42][43][44], and in this review the main focus will be on polymer-based composite electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Recent Advancements in Polymer-Based Composite Electrolytes for Rechargeable Lithium Batteries

Tan

Zeng

et al. 2018

Electrochem. Energ. Rev.

334

170

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In recent years, lithium batteries using conventional organic liquid electrolytes have been found to possess a series of safety concerns. Because of this, solid polymer electrolytes, benefiting from shape versatility, flexibility, low-weight and low processing costs, are being investigated as promising candidates to replace currently available organic liquid electrolytes in lithium batteries. However, the inferior ion diffusion and poor mechanical performance of these promising solid polymer electrolytes remain a challenge. To resolve these challenges and improve overall comprehensive performance, polymers are being coordinated with other components, including liquid electrolytes, polymers and inorganic fillers, to form polymer-based composite electrolytes. In this review, recent advancements in polymer-based composite electrolytes including polymer/ liquid hybrid electrolytes, polymer/polymer coordinating electrolytes and polymer/inorganic composite electrolytes are reviewed; exploring the benefits, synergistic mechanisms, design methods, and developments and outlooks for each individual composite strategy. This review will also provide discussions aimed toward presenting perspectives for the strategic design of polymer-based composite electrolytes as well as building a foundation for the future research and development of high-performance solid polymer electrolytes.

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“…Fundamental understanding of electrode/electrolyte interfacial structures and their dynamics is essential for the development of electrochemical devices such as batteries and capacitors. [1][2][3] Toward the understanding, computational approaches as typified by electronic structure calculations and molecular dynamics (MD) simulations have become a promising way that allows us to gain valuable insights into electrochemical interfaces at the atomic level. Among them, first-principles calculations play a central role for studies of electrode/electrolyte interfaces.…”

Section: Introductionmentioning

confidence: 99%

Electrode polarization effects on interfacial kinetics of ionic liquid at graphite surface: An extended lagrangian‐based constant potential molecular dynamics simulation study

Inagaki

Nagaoka

2019

J Comput Chem

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Computational models including electrode polarization can be essential to study electrode/electrolyte interfacial phenomena more realistically. We present here a constant‐potential classical molecular dynamics simulation method based on the extended Lagrangian formulation where the fluctuating electrode atomic charges are treated as independent dynamical variables. The method is applied to a graphite/ionic liquid system for the validation and the interfacial kinetics study. While the correct adiabatic dynamics is achieved with a sufficiently small fictitious mass of charge, static properties have been shown to be almost insensitive to the fictitious mass. As for the kinetics study, electrical double layer (EDL) relaxation and ion desorption from the electrode surface are considered. We found that the polarization slows EDL relaxation greatly whereas it has little impact on the ion desorption kinetics. The findings suggest that the polarization is essential to estimate the kinetics in nonequilibrium processes, not in equilibrium. © 2019 Wiley Periodicals, Inc.

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Recent Advancements in Li-Ion Conductors for All-Solid-State Li-Ion Batteries

Cited by 258 publications

References 122 publications

Fast Lithium Ion Conduction in Lithium Phosphidoaluminates

Fast Lithium Ion Conduction in Lithium Phosphidoaluminates

Recent Advancements in Polymer-Based Composite Electrolytes for Rechargeable Lithium Batteries

Electrode polarization effects on interfacial kinetics of ionic liquid at graphite surface: An extended lagrangian‐based constant potential molecular dynamics simulation study

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