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Title: Antisite occupation induced single anionic redox chemistry and structural stabilization of layered sodium chromium sulfide

Journal Article · · Nature Communications
 [1];  [2];  [3];  [3];  [2];  [4];  [4];  [4];  [3];  [2]
  1. Fudan Univ., Shanghai (People's Republic of China); Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Fudan Univ., Shanghai (People's Republic of China)
  3. Shanghai Univ., Shanghai (People's Republic of China)
  4. Chinese Academy of Sciences, Beijing (People's Republic of China)

The intercalation compounds with various electrochemically active or inactive elements in the layered structure have been the subject of increasing interest due to their high capacities, good reversibility, simple structures and ease of synthesis. However, their reversible intercalation/deintercalation redox chemistries in all previous compounds involve a single cationic redox reaction or a cumulative cationic and anionic redox reaction. Here we report an anionic redox only chemistry and structural stabilization of layered sodium chromium sulfide. It is discovered that sulfur in sodium chromium sulfide is electrochemical active undergoing oxidation/reduction of sulfur rather than chromium. Significantly, sodium ions can successfully move out and into without changing its lattice parameter c, which is explained in terms of the occurrence of chromium/sodium vacancy antisite during desodiation and sodiation processes. Here, our present work not only enriches the electrochemistry of layered intercalation compounds, but also extends the scope of investigation on high-capacity electrodes.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
SC00112704
OSTI ID:
1377061
Report Number(s):
BNL-114211-2017-JA; R&D Project: MA453MAEA; VT1201000
Journal Information:
Nature Communications, Vol. 8, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 68 works
Citation information provided by
Web of Science

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Cited By (14)

Oxygen Defect Modulated Titanium Niobium Oxide on Graphene Arrays: An Open-Door for High-Performance 1.4 V Symmetric Supercapacitor in Acidic Aqueous Electrolyte journal September 2018
Impact of High Valence State Cation Ti/Ta Surface Doping on the Stabilization of Spinel LiNi 0.5 Mn 1.5 O 4 Cathode Materials: A Systematic Density Functional Theory Investigation journal April 2018
KCrS 2 Cathode with Considerable Cyclability and High Rate Performance: The First K + Stoichiometric Layered Compound for Potassium-Ion Batteries journal October 2018
Anionic redox reaction in layered NaCr2/3Ti1/3S2 through electron holes formation and dimerization of S–S journal October 2019
Exploring the bottlenecks of anionic redox in Li-rich layered sulfides journal November 2019
Porous NaV 3 (PO 4 ) 3 /C nanocomposite anode with superior Na-storage performance for sodium-ion batteries journal January 2019
Atomic insight into the structural transformation and anionic/cationic redox reactions of VS 2 nanosheets in sodium-ion batteries journal January 2018
Atomistic understanding of structural evolution, ion transport and oxygen stability in layered NaFeO 2 journal January 2019
DFT calculations of the synergistic effect of λ-MnO 2 /graphene composites for electrochemical adsorption of lithium ions journal January 2019
Atomistic insights into the screening and role of oxygen in enhancing the Li + conductivity of Li 7 P 3 S 11−x O x solid-state electrolytes journal January 2019
Comparative study on the electronic structures and redox reactions in LiCrX 2 and NaCrX 2 (X = O and S) journal January 2019
Single metal atoms regulated flexibly by a 2D InSe substrate for CO 2 reduction electrocatalysts journal January 2019
Atomically tailoring vacancy defects in FeF 2.2 (OH) 0.8 toward ultra-high rate and long-life Li/Na-ion batteries journal January 2019
Review on anionic redox in sodium-ion batteries journal January 2019

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