| Title: |
Polymorphism in Li 4 Zn(PO 4 ) 2 and Stabilization of its Structural Disorder to Improve Ionic Conductivity |
| Authors: |
Saha, Sujoy; Rousse, Gwenaëlle; Blazquez Alcover, Ignacio; Courty, Mathieu; Alves Dalla Corte, Daniel; Tarascon, Jean‐marie |
| Contributors: |
Université Pierre et Marie Curie - Paris 6 (UPMC); Collège de France - Chaire Chimie du solide et énergie; Chimie du solide et de l'énergie (CSE); Collège de France (CdF (institution))-Institut de Chimie - CNRS Chimie (INC-CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF (institution))-Institut de Chimie - CNRS Chimie (INC-CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS); Réseau sur le stockage électrochimique de l'énergie (RS2E); Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP); Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP); Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP); Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA); Laboratoire de Réactivité et de Chimie des Solides - UMR CNRS 7314 UPJV (LRCS); Advanced Lithium Energy Storage Systems - ALISTORE-ERI (ALISTORE-ERI); Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS) |
| Source: |
ISSN: 0897-4756. |
| Publisher Information: |
CCSD; American Chemical Society |
| Publication Year: |
2018 |
| Collection: |
Université Toulouse III - Paul Sabatier: HAL-UPS |
| Subject Terms: |
[CHIM]Chemical Sciences |
| Description: |
International audience ; Realization of the vulnerability of current rechargeable battery systems drives the research of solid electrolytes. In the search for a new Li ion conductor, we explore the rich crystal chemistry of Li 4 Zn(PO 4) 2 which presents a low temperature monoclinic (α-) and a high temperature orthorhombic (β-) polymorph. We solved the crystal structure of the β-phase and found that it has a disordered Li/Zn-sublattice while showing the largest conductivity; however it could not be stabilized at room temperature by quenching. We discovered that the partial substitution of Zn 2+ with Ga 3+ in Li 4-x Zn 1-x Ga x (PO 4) 2 first leads to an intermediate β' phase. Increasing the Ga content to 0.5 mol pfu. enables to stabilize the pure β-phase at room temperature, which exhibits a conductivity by several orders of magnitudes higher than the pristine sample. The crystal structures of the new β'/β-phases have been solved to elucidate the conduction mechanism, which confirms the high sensitivity of ionic conductivity on disorder. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.1021/acs.chemmater.7b05139 |
| Availability: |
https://hal.sorbonne-universite.fr/hal-01778015; https://hal.sorbonne-universite.fr/hal-01778015v1/document; https://hal.sorbonne-universite.fr/hal-01778015v1/file/Final%20Draft-Saha,%20Chem.%20Mater.%202018,%2030,%201379%E2%88%921390.pdf; https://doi.org/10.1021/acs.chemmater.7b05139 |
| Rights: |
https://about.hal.science/hal-authorisation-v1/ ; info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.783C4E22 |
| Database: |
BASE |