Advanced Electrode and Electrolyte Materials for All-Solid-State Batteries

A special issue of Batteries (ISSN 2313-0105). This special issue belongs to the section "Battery Materials and Interfaces: Anode, Cathode, Separators and Electrolytes or Others".

Deadline for manuscript submissions: 15 December 2024 | Viewed by 2171

Special Issue Editor


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Guest Editor
Battery and Electrochemistry Laboratory, Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
Interests: ion conductors; solid-state batteries; solid electrolytes

Special Issue Information

Dear Colleagues,

All-solid-state batteries (including lithium- and sodium-ion batteries) are considered to be a next-generation energy storage technology with the possibility of outperforming today’s state-of-the-art Li-ion batteries based on liquid organic electrolytes in terms of energy and power density. To achieve this goal, the development of specific cathode active materials as well as highly conducting and electrochemically stable solid electrolytes is required. Moreover, a thorough understanding of interfacial degradation processes occurring at the electrode/electrolyte interfaces is of prime importance, to guide a targeted development of cell constituents. Contrary to rechargeable Li (and Na) -ion batteries containing liquid electrolytes, no combination of materials has prevailed over others in the case of solid-state batteries. This calls for further exploration of new materials and the development of modification strategies to further improve their performance.

In this Special Issue, we are looking for contributions of:

  • Novel solid electrolyte materials for Li- and Na-batteries (but not limited to);
  • Hybrid electrolyte material concepts (polymer-based, amorphous glasses, etc.);
  • Surface modification strategies for cathode active materials;
  • Understanding the muti-scale interplay of electrode and electrolyte materials;
  • Electrochemical assessment of solid electrolyte materials in solid-state batteries;
  • Favorable (chemo)mechanically cathode active materials;
  • Novel scalable synthesis procedures for solid electrolytes.

Dr. Florian Strauss
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Batteries is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • scalable synthesis procedures
  • interfacial degradation mechanisms
  • novel solid electrolyte materials
  • novel cathode active materials
  • lithium solid-state batteries
  • sodium solid-state batteries
  • post-mortem analysis
  • in situ analysis

Published Papers (1 paper)

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Research

11 pages, 2225 KiB  
Article
A Facile Two-Step Thermal Process for Producing a Dense, Phase-Pure, Cubic Ta-Doped Lithium Lanthanum Zirconium Oxide Electrolyte for Upscaling
by Diwakar Karuppiah, Dmitrii Komissarenko, Nur Sena Yüzbasi, Yang Liu, Pradeep Vallachira Warriam Sasikumar, Amir Hadian, Thomas Graule, Frank Clemens and Gurdial Blugan
Batteries 2023, 9(11), 554; https://doi.org/10.3390/batteries9110554 - 13 Nov 2023
Viewed by 1868
Abstract
An inorganic solid electrolyte is the most favorable candidate for replacing flammable liquid electrolytes in lithium batteries. Lithium lanthanum zirconium oxide (LLZO) is considered a promising solid electrolyte due to its safe operating potential window (0–5 V) combined with its good electrochemical stability. [...] Read more.
An inorganic solid electrolyte is the most favorable candidate for replacing flammable liquid electrolytes in lithium batteries. Lithium lanthanum zirconium oxide (LLZO) is considered a promising solid electrolyte due to its safe operating potential window (0–5 V) combined with its good electrochemical stability. In this work, 250 g batches of pre-sintered Ta-doped LLZO (Li7La3Zr1.6Ta0.4O12, Ta-LLZO) were synthesized for bulk production of a dense LLZO electrolyte. A simple two-step thermal treatment process was developed. The first thermal step at 950 °C initiates nucleation of LLZO, with carefully controlled process parameters such as heating atmosphere, temperature, and dopant concentration. In the second thermal step at 1150 °C, sintered discs were obtained as solid electrolytes, with relative densities of 96%. X-ray diffraction analysis confirmed the phase purity of the sintered Ta-LLZO disc, and refined data were used to calculate the lattice parameter (12.944 Å). Furthermore, the presence of the Ta dopant in the disc was confirmed through X-ray photoelectron spectroscopy (XPS) analysis. The ionic and electronic conductivity values of the Ta-LLZO disc were 10−4 S cm−1 and 10−10 S cm−1, respectively. These values confirm that the prepared (Ta-LLZO) discs exhibit ionic conductivity while being electronically insulating, being suitable for use as solid electrolytes with the requisite electrical properties. Full article
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