Title: Proton dynamics in water confined at the interface of the graphene–MXene heterostructure

Journal Article · · Journal of Chemical Physics
DOI: https://doi.org/10.1063/5.0066835 · OSTI ID:1982358

Heterostructures of 2D materials offer a fertile ground to study ion transport and charge storage. Here, we use ab initio molecular dynamics to examine the proton-transfer/diffusion and redox behavior in a water layer confined in the graphene-Ti3C2O2 heterostructure. We find that in comparison with the similar interface of water confined between Ti3C2O2 layers, the proton redox rate in the dissimilar interface of graphene-Ti3C2O2 is much higher, owing to the very different interfacial structure as well as the interfacial electric field induced by an electron transfer in the latter. Water molecules in the dissimilar interface of the graphene-Ti3C2O2 heterostructure form a denser hydrogen-bond network with a preferred orientation of water molecules, leading to an increase in proton mobility with proton concentration in the graphene-Ti3C2O2 interface. As the proton concentration further increases, proton mobility decreases due to increasingly more frequent surface redox events that slow down proton mobility due to binding with surface O atoms. Our work provides important insights into how the dissimilar interface and their associated interfacial structure and properties impact proton transfer and redox in the confined space.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Fluid Interface Reactions, Structures and Transport Center (FIRST)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1982358
Journal Information:
Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 23 Vol. 155; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (60)

Flexible MXene/Graphene Films for Ultrafast Supercapacitors with Outstanding Volumetric Capacitance journal June 2017
Two-Dimensional Nanocrystals Produced by Exfoliation of Ti3AlC2 journal August 2011
Probing the Mechanism of High Capacitance in 2D Titanium Carbide Using In Situ X-Ray Absorption Spectroscopy journal May 2015
Flexible All-Solid-State Supercapacitors with High Volumetric Capacitances Boosted by Solution Processable MXene and Electrochemically Exfoliated Graphene journal November 2016
Sulfur Cathodes Based on Conductive MXene Nanosheets for High-Performance Lithium-Sulfur Batteries journal February 2015
A Two-Dimensional Lamellar Membrane: MXene Nanosheet Stacks journal January 2017
Thermally Reduced Graphene/MXene Film for Enhanced Li‐ion Storage journal June 2018
Effect of the damping function in dispersion corrected density functional theory journal March 2011
A MXene‐Based Wearable Biosensor System for High‐Performance In Vitro Perspiration Analysis journal April 2019
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set journal July 1996
TiO2 nanoparticle modified organ-like Ti3C2 MXene nanocomposite encapsulating hemoglobin for a mediator-free biosensor with excellent performances journal December 2015
Intercalated MXene-based layered composites: Preparation and application journal April 2020
Sandwich-like Co3O4/MXene composite with enhanced catalytic performance for Bisphenol A degradation journal September 2018
2D a-Fe2O3 doped Ti3C2 MXene composite with enhanced visible light photocatalytic activity for degradation of Rhodamine B journal November 2018
Identification of a Grotthuss proton hopping mechanism at protonated polyhedral oligomeric silsesquioxane (POSS) – water interface journal January 2022
Ultra-sensitive electrocatalytic detection of bromate in drinking water based on Nafion/Ti3C2Tx (MXene) modified glassy carbon electrode journal July 2018
Contribution of Dielectric Screening to the Total Capacitance of Few-Layer Graphene Electrodes journal February 2016
Nuclear Quantum Effects in H + and OH – Diffusion along Confined Water Wires journal July 2016
Understanding the MXene Pseudocapacitance journal February 2018
Architecturally Robust Graphene-Encapsulated MXene Ti 2 CT x @Polyaniline Composite for High-Performance Pouch-Type Asymmetric Supercapacitor journal September 2018
MXene/Graphene Heterostructures as High-Performance Electrodes for Li-Ion Batteries journal August 2018
Proton Redox and Transport in MXene-Confined Water journal December 2019
Two-Dimensional Molybdenum Carbide (MXene) as an Efficient Electrocatalyst for Hydrogen Evolution journal August 2016
Multimodality of Structural, Electrical, and Gravimetric Responses of Intercalated MXenes to Water journal September 2017
Bioinspired Ultrasensitive and Stretchable MXene-Based Strain Sensor via Nacre-Mimetic Microscale “Brick-and-Mortar” Architecture journal December 2018
High-Energy-Density Hydrogen-Ion-Rocking-Chair Hybrid Supercapacitors Based on Ti 3 C 2 T x MXene and Carbon Nanotubes Mediated by Redox Active Molecule journal May 2019
Bioinspired Interlocked Structure-Induced High Deformability for Two-Dimensional Titanium Carbide (MXene)/Natural Microcapsule-Based Flexible Pressure Sensors journal July 2019
Are MXenes Promising Anode Materials for Li Ion Batteries? Computational Studies on Electronic Properties and Li Storage Capability of Ti 3 C 2 and Ti 3 C 2 X 2 (X = F, OH) Monolayer journal September 2012
Graphene Oxide as a Pb(II) Separation Medium: Has Part of the Story Been Overlooked? journal April 2021
Progress, Challenges, and Opportunities in Two-Dimensional Materials Beyond Graphene journal March 2013
The nature of the hydrated excess proton in water journal February 1999
Van der Waals heterostructures journal July 2013
Ultra-high-rate pseudocapacitive energy storage in two-dimensional transition metal carbides journal July 2017
Two-dimensional heterostructures for energy storage journal June 2017
MXene molecular sieving membranes for highly efficient gas separation journal January 2018
A review of electrolyte materials and compositions for electrochemical supercapacitors journal January 2015
Control of electronic properties of 2D carbides (MXenes) by manipulating their transition metal layers journal January 2016
H 2 O 2 assisted room temperature oxidation of Ti 2 C MXene for Li-ion battery anodes journal January 2016
Flexible MXene–graphene electrodes with high volumetric capacitance for integrated co-cathode energy conversion/storage devices journal January 2017
MXene/graphene hybrid fibers for high performance flexible supercapacitors journal January 2017
Heterostructures of MXenes and N-doped graphene as highly active bifunctional electrocatalysts journal January 2018
A density-functional model of the dispersion interaction journal October 2005
A consistent and accurate ab initio parametrization of density functional dispersion correction (DFT-D) for the 94 elements H-Pu journal April 2010
A unified formulation of the constant temperature molecular dynamics methods journal July 1984
Transport properties of a highly conductive 2D Ti 3 C 2 T x MXene/graphene composite journal July 2016
Progress and challenges in ab initio simulations of quantum nuclei in weakly bonded systems journal May 2021
Nuclear quantum effects and hydrogen bond fluctuations in water journal September 2013
Special points for Brillouin-zone integrations journal June 1976
Energy fluctuations induced by the Nosé thermostat journal December 1992
Projector augmented-wave method journal December 1994
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
First-principles analysis of MoS 2 /Ti 2 C and MoS 2 /Ti 2 C Y 2 ( Y = F and OH) all-2D semiconductor/metal contacts journal June 2013
Interfacial and electronic properties of heterostructures of MXene and graphene journal February 2019
Generalized Gradient Approximation Made Simple journal October 1996
Interfacial charge transfer and interaction in the MXene / Ti O 2 heterostructures journal May 2021
Molecular origin of negative component of Helmholtz capacitance at electrified Pt(111)/water interface journal October 2020
2D materials and van der Waals heterostructures journal July 2016
The world of two-dimensional carbides and nitrides (MXenes) journal June 2021
Constant Temperature Molecular Dynamics Methods journal January 1991