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First-principles study of adsorption–desorption kinetics of aqueous V 2+ /V 3+ redox species on graphite in a vanadium redox flow battery

Journal Article · · Physical Chemistry Chemical Physics
DOI:https://doi.org/10.1039/c7cp02350b· OSTI ID:1492389
 [1];  [1];  [2]
  1. Department of Chemical and Biomolecular Engineering; University of Nebraska-Lincoln; Lincoln; USA
  2. Department of Chemical and Biomolecular Engineering; University of Nebraska-Lincoln; Lincoln; USA; Nebraska Center for Materials and Nanoscience
Vanadium redox flow batteries (VRFBs) represent a promising solution to grid-scale energy storage, and understanding the reactivity of electrode materials is crucial for improving the power density of VRFBs. However, atomistic details about the interactions between vanadium ions and electrode surfaces in aqueous electrolytes are still lacking. Here, we examine the reactivity of the basal (0001) and edge (11[2 with combining macron]0) graphite facets with water and aqueous V2+/V3+ redox species at 300 K employing Car–Parrinello molecular dynamics (CPMD) coupled with metadynamics simulations. The results suggest that the edge surface is characterized by the formation of ketonic C[double bond, length as m-dash]O functional groups due to complete water dissociation into the H/O/H configuration with surface O atoms serving as active sites for adsorption of V2+/V3+ species. The formation of V–O bonds at the surface should significantly improve the kinetics of electron transfer at the edge sites, which is not the case for the basal surface, in agreement with the experimentally hypothesized mechanism.
Research Organization:
Lawrence Berkeley National Laboratory-National Energy Research Scientific Computing Center
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
AC02-05CH11231
OSTI ID:
1492389
Journal Information:
Physical Chemistry Chemical Physics, Journal Name: Physical Chemistry Chemical Physics Journal Issue: 23 Vol. 19; ISSN 1463-9076; ISSN PPCPFQ
Country of Publication:
United States
Language:
English

References (40)

Unified Approach for Molecular Dynamics and Density-Functional Theory journal November 1985
Efficient pseudopotentials for plane-wave calculations journal January 1991
Redox flow batteries a review journal September 2011
In Situ Kinetics Studies in All-Vanadium Redox Flow Batteries journal December 2012
Electrochemical Energy Storage for Green Grid journal May 2011
Reconstruction of low-index graphite surfaces journal July 2016
Investigations on V(IV)/V(V) and V(II)/V(III) redox reactions by various electrochemical methods journal January 2005
Tunable Oxygen Functional Groups as Electrocatalysts on Graphite Felt Surfaces for All-Vanadium Flow Batteries journal May 2016
Effect of Pretreatment on the Rate of the VO2+/VO2+ and V2+/V3+ Reactions at a Carbon Electrode journal September 2014
Electrochemical behaviour of vanadium(V)/vanadium(IV) redox couple at graphite electrodes journal January 1992
Norm-Conserving Pseudopotentials journal November 1979
Material design and engineering of next-generation flow-battery technologies journal November 2016
Characterization of Vanadium Species in Mixed Chloride–Sulfate Solutions: An Ab Initio Metadynamics Study journal May 2016
NWChem: A comprehensive and scalable open-source solution for large scale molecular simulations journal September 2010
Formation of Ag nanowires on graphite stepped surfaces. A DFT study journal January 2015
Graphene and MoS2 interacting with water: A comparison by ab initio calculations journal October 2016
A molecular dynamics method for simulations in the canonical ensemble journal June 1984
Nanostructured Electrocatalysts for All-Vanadium Redox Flow Batteries journal May 2015
A technology review of electrodes and reaction mechanisms in vanadium redox flow batteries journal January 2015
Influence of Edge- and Basal-Plane Sites on the Vanadium Redox Kinetics for Flow Batteries journal February 2015
Review of material research and development for vanadium redox flow battery applications journal July 2013
Composition of the Electrode Determines Which Half-Cell’s Rate Constant is Higher in a Vanadium Flow Battery journal March 2016
Electron-Transfer Kinetics of Np[sup 3+]∕Np[sup 4+], NpO[sub 2][sup +]∕NpO[sub 2][sup 2+], V[sup 2+]∕V[sup 3+], and VO[sup 2+]∕VO[sub 2][sup +] at Carbon Electrodes journal January 2005
Chloride supporting electrolytes for all-vanadium redox flow batteries journal January 2011
The Structure of Graphite journal December 1924
A Stable Vanadium Redox-Flow Battery with High Energy Density for Large-Scale Energy Storage journal March 2011
Generalized norm-conserving pseudopotentials journal August 1989
Selective anion exchange membranes for high coulombic efficiency vanadium redox flow batteries journal January 2013
Ab initio study of graphite prismatic surfaces journal June 2001
Effect of the damping function in dispersion corrected density functional theory journal March 2011
Structure, hydrolysis, and diffusion of aqueous vanadium ions from Car-Parrinello molecular dynamics journal September 2016
Generalized Gradient Approximation Made Simple journal October 1996
The Chemistry of Redox-Flow Batteries journal June 2015
Vanadium Electrolyte Studies for the Vanadium Redox Battery-A Review journal June 2016
Structure and stability of hexa-aqua V(iii) cations in vanadium redox flow battery electrolytes journal January 2012
Canonical dynamics: Equilibrium phase-space distributions journal March 1985
V5+ degradation of sulfonated Radel membranes for vanadium redox flow batteries journal January 2013
Carbon-based metal-free catalysts journal September 2016
Structure and dynamics of the hydration shells of the Zn2+ ion from ab initio molecular dynamics and combined ab initio and classical molecular dynamics simulations journal May 2010
Nanostructural adsorption of vanadium oxide on functionalized graphene: a DFT study journal January 2016

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