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Title: Unravelling the origin of irreversible capacity loss in NaNiO 2 for high voltage sodium ion batteries

Journal Article · · Nano Energy
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Layered transition metal compounds have attracted much attention due to their high theoretical capacity and energy density for sodium ion batteries. However, this kind of material suffers from serious irreversible capacity decay during the charge and discharge process. Here, using synchrotron-based operando transmission X-ray microscopy and high-energy X-ray diffraction combined with electrochemical measurements, the visualization of the dissymmetric phase transformation and structure evolution mechanism of layered NaNiO2 material during initial charge and discharge cycles are clarified. Phase transformation and deformation of NaNiO2 during the voltage range of below 3.0 V and over 4.0 V are responsible for the irreversible capacity loss during the first cycling, which is also confirmed by the evolution of reaction kinetics behavior obtained by the galvanostatic intermittent titration technique. These findings reveal the origin of the irreversibility of NaNiO2 and offer valuable insight into the phase transformation mechanism, which will provide underlying guidance for further development of high-performance sodium ion batteries.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Natural Science Foundation of China (NNSFC); USDOE Office of Science - Office of Basic Energy Sciences - Scientific User Facilities Division
DOE Contract Number:
AC02-06CH11357
OSTI ID:
1377596
Journal Information:
Nano Energy, Vol. 34; ISSN 2211-2855
Publisher:
Elsevier
Country of Publication:
United States
Language:
English

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Cited By (11)

Ni-based cathode materials for Na-ion batteries journal June 2019
Challenges in Developing Electrodes, Electrolytes, and Diagnostics Tools to Understand and Advance Sodium-Ion Batteries journal February 2018
Ni- and/or Mn-based layered transition metal oxides as cathode materials for sodium ion batteries: status, challenges and countermeasures journal January 2019
Electrochemistry and Solid‐State Chemistry of NaMeO 2 (Me = 3d Transition Metals) journal June 2018
Na 0.97 KFe(SO 4 ) 2 : an iron-based sulfate cathode material with outstanding cyclability and power capability for Na-ion batteries journal January 2018
Exploring a high capacity O3-type cathode for sodium-ion batteries and its structural evolution during an electrochemical process journal January 2018
Operando X-ray Diffraction Characterization for Understanding the Intrinsic Electrochemical Mechanism in Rechargeable Battery Materials journal April 2017
Do imaging techniques add real value to the development of better post-Li-ion batteries? journal January 2018
Progressive concentration gradient nickel-rich oxide cathode material for high-energy and long-life lithium-ion batteries journal January 2019
Unexpectedly high electrochemical performances of a monoclinic Na 2.4 V 2 (PO 4 ) 3 /conductive polymer composite for Na-ion batteries journal January 2018
Iodine-doped sulfurized polyacrylonitrile with enhanced electrochemical performance for room-temperature sodium/potassium sulfur batteries journal January 2019

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Related Subjects

high voltage
irreversible capacity loss
layered structure materials
sodium-ion batteries
synchrotron-based techniques