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Title: Structure tracking aided design and synthesis of Li3V2(PO4)3 nanocrystals as high-power cathodes for lithium ion batteries

Journal Article · · Chemistry of Materials
 [1];  [2];  [3];  [4];  [2];  [2]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); Univ. of Electronic Science and Technology of China, Chengdu (China)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States); Peking Univ. Beijing (China)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., Stony Brook, NY (United States)
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In this study, preparing new electrode materials with synthetic control of phases and electrochemical properties is desirable for battery applications but hardly achievable without knowing how the synthesis reaction proceeds. Herein, we report on structure tracking-aided design and synthesis of single-crystalline Li3V2(PO4)3 (LVP) nanoparticles with extremely high rate capability. A comprehensive investigation was made to the local structural orderings of the involved phases and their evolution toward forming LVP phase using in situ/ex situ synchrotron X-ray and electron-beam diffraction, spectroscopy, and imaging techniques. The results shed light on the thermodynamics and kinetics of synthesis reactions and enabled the design of a cost-efficient synthesis protocol to make nanocrystalline LVP, wherein solvothermal treatment is a crucial step leading to an amorphous intermediate with local structural ordering resembling that of LVP, which, upon calcination at moderate temperatures, rapidly transforms into the desired LVP phase. The obtained LVP particles are about 50 nm, coated with a thin layer of amorphous carbon and featured with excellent cycling stability and rate capability – 95% capacity retention after 200 cycles and 66% theoretical capacity even at a current rate of 10 C. The structure tracking based method we developed in this work offers a new way of designing battery electrodes with synthetic control of material phases and properties.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC00112704
OSTI ID:
1228827
Report Number(s):
BNL-108278-2015-JA; R&D Project: LS001
Journal Information:
Chemistry of Materials, Vol. 27, Issue 16; ISSN 0897-4756
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 48 works
Citation information provided by
Web of Science

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Cited By (11)

Towards enhanced sodium storage by investigation of the Li ion doping and rearrangement mechanism in Na 3 V 2 (PO 4 ) 3 for sodium ion batteries journal January 2018
Nanostructured Li 3 V 2 (PO 4 ) 3 Cathodes journal April 2018
NASICON-Structured Materials for Energy Storage journal February 2017
Vanadium‐Based Nanomaterials: A Promising Family for Emerging Metal‐Ion Batteries journal January 2020
An Advanced All Phosphate Lithium-Ion Battery Providing High Electrochemical Stability, High Rate Capability and Long-Term Cycling Performance journal December 2016
Atomic-scale structural and chemical evolution of Li3V2(PO4)3 cathode cycled at high voltage window journal May 2019
Rhombohedral Li2.4Na0.6V2(PO4)3@C nanoplates as high-rate and long-life cathode materials for lithium-ion batteries journal April 2018
Organic-phase synthesis of Li 3 V 2 (PO 4 ) 3 @Carbon nanocrystals and their lithium storage properties journal January 2018
In Situ Probing and Synthetic Control of Cationic Ordering in Ni-Rich Layered Oxide Cathodes journal October 2016
F-Doping effects on carbon-coated Li 3 V 2 (PO 4 ) 3 as a cathode for high performance lithium rechargeable batteries: combined experimental and DFT studies journal January 2018
An Advanced All Phosphate Lithium-Ion Battery Providing High Electrochemical Stability, High Rate Capability and Long-Term Cycling Performance text January 2017

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