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Title: Membrane-Induced Vanadium Crossover-Blocking Polybenzimidazole Copolymer with Exceptional Proton Selectivity

Journal Article · · ACS Applied Polymer Materials

Broad deployment of redox flow batteries is hindered, in part, due to the lack of highly selective ion-exchange membranes with high proton conductivity. We report a post-functionalization strategy for polybenzimidazole copolymer (PBI-co) membranes by a reacting mixture of concentrated sulfuric and phosphoric acids that led to improved membrane selectivity while retaining high proton conductivity. Fourier-transform infrared spectroscopy confirmed successful sulfonation and protonation of benzimidazole functionalities. PBI-co exhibits a very high room-temperature proton conductivity of 0.138 S cm-1, as measured by electrochemical impedance spectroscopy. PBI-co also demonstrates electromigration crossover mitigation under applied current densities up to 500 mA cm-2, and voltage pulses up to 1.4 V, while also inhibiting diffusion-driven vanadium crossover for over 20 days. Single-cell vanadium flow battery testing on post-functionalized PBI-co further confirms state-of-the-art battery performance with an ~99.5% Coulombic efficiency at 100 mA cm-2 and an area-specific resistance of ~20 mO cm2 lower than Nafion-212 membrane.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE National Renewable Energy Laboratory (NREL), Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1839374
Report Number(s):
NREL/JA--5900-80770; MainId:77554; UUID:08dc48b5-b6c8-413e-8ee6-021dd951aac6; MainAdminID:63561
Journal Information:
ACS Applied Polymer Materials, Journal Name: ACS Applied Polymer Materials Journal Issue: 1 Vol. 4; ISSN 2637-6105
Publisher:
ACS PublicationsCopyright Statement
Country of Publication:
United States
Language:
English

References (52)

The Chemistry of Redox-Flow Batteries journal June 2015
A Low-Cost Neutral Zinc-Iron Flow Battery with High Energy Density for Stationary Energy Storage journal October 2017
Hydrothermal Generation of Conjugated Polymers Using the Example of Pyrrone Polymers and Polybenzimidazoles journal May 2020
Molecular Engineering of Azobenzene‐Based Anolytes Towards High‐Capacity Aqueous Redox Flow Batteries journal September 2020
Hybrid Electrolyte Engineering Enables Safe and Wide‐Temperature Redox Flow Batteries journal June 2021
A Chemistry and Microstructure Perspective on Ion‐Conducting Membranes for Redox Flow Batteries journal July 2021
Membrane Development for Vanadium Redox Flow Batteries journal October 2011
Tackling Capacity Fading in Vanadium Redox Flow Batteries with Amphoteric Polybenzimidazole/Nafion Bilayer Membranes journal May 2019
Proton transport in polybenzimidazole blended with H3PO4 or H2SO4 journal February 2002
Preparation and characterization of sulfonated polyimide/TiO2 composite membrane for vanadium redox flow battery journal November 2013
Polarization curve analysis of all-vanadium redox flow batteries journal August 2011
The infrared spectra of aromatic compounds I. The out-of-plane C-H bending vibrations in the region 625–900 cm−1 journal February 1955
Optimizing the performance of meta-polybenzimidazole membranes in vanadium redox flow batteries by adding an alkaline pre-swelling step journal March 2021
Studies on polypyrrole modified nafion membrane for vanadium redox flow battery journal March 2008
The use of polybenzimidazole membranes in vanadium redox flow batteries leading to increased coulombic efficiency and cycling performance journal January 2015
Grafted polybenzimidazole copolymers bearing polyhedral oligosilsesquioxane pendant moieties journal September 2017
Imidazole based ionenes, their blends with PBI-OO and applicability as membrane in a vanadium Redox flow battery journal November 2017
Single-layer graphene as a highly selective barrier for vanadium crossover with high proton selectivity journal August 2021
Nafion/SiO2 hybrid membrane for vanadium redox flow battery journal April 2007
Nafion/polyvinylidene fluoride blend membranes with improved ion selectivity for vanadium redox flow battery application journal July 2011
Dramatic performance gains in vanadium redox flow batteries through modified cell architecture journal May 2012
New sulfonated polybenzimidazole (SPBI) copolymer-based proton-exchange membranes for fuel cells journal May 2009
Mechanically strong sulfonated polybenzimidazole PEMs with enhanced proton conductivity journal January 2019
Modification of Nafion membrane using interfacial polymerization for vanadium redox flow battery applications journal March 2008
Nafion/organic silica modified TiO2 composite membrane for vanadium redox flow battery via in situ sol–gel reactions journal September 2009
Polybenzimidazole and butylsulfonate grafted polybenzimidazole blends for proton exchange membrane fuel cells journal February 2012
Layered zirconium phosphate sulfophenylphosphonates reinforced sulfonated poly (fluorenyl ether ketone) hybrid membranes with high proton conductivity and low vanadium ion permeability journal September 2013
Application and degradation mechanism of polyoxadiazole based membrane for vanadium flow batteries journal August 2015
A novel polybenzimidazole membrane containing bulky naphthalene group for vanadium flow battery journal September 2019
New Insights into Perfluorinated Sulfonic-Acid Ionomers journal January 2017
Pore-Size-Tuned Graphene Oxide Frameworks as Ion-Selective and Protective Layers on Hydrocarbon Membranes for Vanadium Redox-Flow Batteries journal May 2018
Redox Flow Batteries: How to Determine Electrochemical Kinetic Parameters journal March 2020
Sandwiching h-BN Monolayer Films between Sulfonated Poly(ether ether ketone) and Nafion for Proton Exchange Membranes with Improved Ion Selectivity journal February 2019
Ultrahigh Ion-Selective and Durable Nafion-NdZr Composite Layer Membranes for All-Vanadium Redox Flow Batteries journal January 2020
Vanadium Flow Battery for Energy Storage: Prospects and Challenges journal March 2013
Sulfonated Polybenzimidazoles for High Temperature PEM Fuel Cells journal August 2010
Identifying the Active Site in Nitrogen-Doped Graphene for the VO 2+ /VO 2 + Redox Reaction journal May 2013
All-polymer particulate slurry batteries journal June 2019
A recast Nafion/graphene oxide composite membrane for advanced vanadium redox flow batteries journal January 2016
A novel polysulfone–polyvinylpyrrolidone membrane with superior proton-to-vanadium ion selectivity for vanadium redox flow batteries journal January 2016
Porous membranes in secondary battery technologies journal January 2017
A H 3 PO 4 preswelling strategy to enhance the proton conductivity of a H 2 SO 4 -doped polybenzimidazole membrane for vanadium flow batteries journal January 2016
Doping structure and degradation mechanism of polypyrrole–Nafion® composite membrane for vanadium redox flow batteries journal January 2016
Ion conducting membranes for aqueous flow battery systems journal January 2018
Polybenzimidazole co-polymers: their synthesis, morphology and high temperature fuel cell membrane properties journal January 2020
Ion exchange membranes for vanadium redox flow battery (VRB) applications journal March 2011
Nanofiltration (NF) membranes: the next generation separators for all vanadium redox flow batteries (VRBs)? journal January 2011
Layer-by-layer self-assembly of PDDA/PSS-SPFEK composite membrane with low vanadium permeability for vanadium redox flow battery journal January 2013
Sulfonated PBI Gel Membranes for Redox Flow Batteries journal January 2019
Preparation of Polybenzimidazole-Based Membranes and Their Potential Applications in the Fuel Cell System journal March 2014
Membrane Permeability Rates of Vanadium Ions and Their Effects on Temperature Variation in Vanadium Redox Batteries journal December 2016
Polymer Membranes for All-Vanadium Redox Flow Batteries: A Review journal March 2021