skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Freestanding NiFe Oxyfluoride Holey Film with Ultrahigh Volumetric Capacitance for Flexible Asymmetric Supercapacitors

Journal Article · · Small
 [1];  [1];  [2];  [3];  [4];  [4];  [2];  [5]; ORCiD logo [6]
  1. NanoScience Technology Center, University of Central Florida, Orlando FL 32826 USA
  2. Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland WA 99352 USA
  3. Department of Materials Science and Engineering, University of Central Florida, Orlando FL 32826 USA
  4. Department of Mechanical and Aerospace Engineering, University of Central Florida, Orlando FL 32816 USA
  5. Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland WA 99352 USA
  6. NanoScience Technology Center, University of Central Florida, Orlando FL 32826 USA; Department of Materials Science and Engineering, University of Central Florida, Orlando FL 32826 USA

In this work, a freestanding NiFe oxyfluoride (NiFeOF) holey film was prepared by electrochemical deposition and anodic treatments. With the combination of good electrical conductivity and holey structure, the NiFeOF holey film offers superior electrochemical performance, due to the following reasons: (i) The residual metal alloy framework can be used as the current collector to improve electrode conductivity. Moreover, the as-prepared freestanding NiFeOF holey film can be used as a supercapacitor electrode without reliance on binders and other additives. The residual metal alloy framework and binder-free electrode effectively reduces electrode resistance, thus improving electron transport. (ii) The highly interconnected holey structure and hierarchical pore distribution provides a high specific surface area to improve electron transport, enhancing rapid ion transport and mitigating diffusion limitations throughout the holey film. (iii) The excellent mechanical characteristics facilitate flexibility and cyclability related performance. Additionally, the NiFeOF holey film presents exceptional electrochemical performance, showing that it is a promising alternative for small/micro-size electronic devices.

Research Organization:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
OSTI ID:
1439669
Report Number(s):
PNNL-SA-130019; KC0203020
Journal Information:
Small, Vol. 14, Issue 3; ISSN 1613-6810
Publisher:
Wiley
Country of Publication:
United States
Language:
English

References (36)

A High Energy Density Asymmetric Supercapacitor from Nano-architectured Ni(OH)2/Carbon Nanotube Electrodes journal January 2012
Nanostructured Fe2O3–graphene composite as a novel electrode material for supercapacitors journal December 2011
Graphene Nanoribbon/V 2 O 5 Cathodes in Lithium-Ion Batteries journal June 2014
Ultrafine V 2 O 5 Nanowires in 3D Current Collector for High-Performance Supercapacitor journal February 2016
Reversible Conversion Reactions with Lithium in Bismuth Oxyfluoride Nanocomposites journal January 2006
Observation of directly interacting coherent two-level systems in an amorphous material journal February 2015
Band alignment of rutile and anatase TiO2 journal July 2013
CVD-grown polypyrrole nanofilms on highly mesoporous structure MnO2 for high performance asymmetric supercapacitors journal January 2017
Three-Dimensional Nanoporous Fe 2 O 3 /Fe 3 C-Graphene Heterogeneous Thin Films for Lithium-Ion Batteries journal March 2014
An Electron Diffraction and Crystal Chemical Investigation of Oxygen/Fluorine Ordering in Rutile-Type Iron Oxyfluoride, FeOF journal December 2000
Chemical synthesis of Fe2O3 thin films for supercapacitor application journal February 2011
High-performance three-dimensional nanoporous NiO film as a supercapacitor electrode journal January 2012
A freestanding NiS x porous film as a binder-free electrode for Mg-ion batteries journal January 2017
Carbon-based materials as supercapacitor electrodes journal January 2009
Manganese oxide-based materials as electrochemical supercapacitor electrodes journal January 2011
An Amorphous Carbon Nitride Photocatalyst with Greatly Extended Visible-Light-Responsive Range for Photocatalytic Hydrogen Generation journal July 2015
New approach for measuring migration properties of point defects in amorphous oxides: Migration properties of point defects in amorphous oxides journal June 2014
Superior Capacity Retention Spinel Oxyfluoride Cathodes for Lithium-Ion Batteries journal March 2006
Inorganic Porous Films for Renewable Energy Storage journal January 2017
A Novel Silver Molybdenum Oxyfluoride Perovskite as a Cathode Material for Lithium Batteries journal May 2009
Investigation on photoelectrochemical and pseudo-capacitance properties of the non-stoichiometric hematite α-Fe2O3 elaborated by sol–gel journal November 2013
Three-dimensional holey-graphene/niobia composite architectures for ultrahigh-rate energy storage journal May 2017
Growth of coral-like PtAu–MnO2 binary nanocomposites on free-standing graphene paper for flexible nonenzymatic glucose sensors journal March 2013
From Water Oxidation to Reduction: Homologous Ni-Co Based Nanowires as Complementary Water Splitting Electrocatalysts journal February 2015
Facile Synthesis of Hierarchical Mesoporous Honeycomb-like NiO for Aqueous Asymmetric Supercapacitors journal August 2015
Nitrogen doped porous carbon fibres as anode materials for sodium ion batteries with excellent rate performance journal January 2014
In situ synthesis of SWNTs@MnO 2 /polypyrrole hybrid film as binder-free supercapacitor electrode journal October 2014
An electrochemical exploration of hollow NiCo 2 O 4 submicrospheres and its capacitive performances journal August 2015
Mesoporous LaNiO3/NiO nanostructured thin films for high-performance supercapacitors journal January 2013
Iron Oxyfluorides as High Capacity Cathode Materials for Lithium Batteries journal January 2009
One-step route synthesis of active carbon@La2NiO4/NiO hybrid coatings as supercapacitor electrode materials: Significant improvements in electrochemical performance journal April 2015
Amorphous nickel hydroxide nanospheres with ultrahigh capacitance and energy density as electrochemical pseudocapacitor materials journal May 2013
Carbon-coated rutile titanium dioxide derived from titanium-metal organic framework with enhanced sodium storage behavior journal September 2016
A new iron oxyfluoride cathode active material for Li-ion battery, Fe2OF4 journal August 2009
Highly sensitive, wearable and wireless pressure sensor using free-standing ZnO nanoneedle/PVDF hybrid thin film for heart rate monitoring journal April 2016
Core–shell structure carbon coated ferric oxide (Fe2O3@C) nanoparticles for supercapacitors with superior electrochemical performance journal August 2015