Vanadium Oxygen Fuel Cell Utilising High Concentration Electrolyte

Risbud, Mandar; Menictas, Chris; Skyllas‐Kazacos, Maria; Noack, Jens

doi:10.3390/batteries5010024

Cited by 20 publications

(10 citation statements)

References 30 publications

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“…The utilization of air as one of the electrolytes removes the need to use two tanks to store energy but also unlocks the potential to increase the concentration of vanadium in the electrolyte operating at higher temperatures, since the V (V) solubility problems do not influence this technology. In 2019, a VAFC was reported by Risbud et al [234]. They achieved a power density of 22 mW cm −2 at 40 mA cm −2 with a vanadium concentration of 3.6 M. With this concentration of vanadium, the VAFC has a theoretical energy density of 143.8 Wh L −1 , almost 3.5 times greater than a VRFC with the same concentration of active species.…”

Section: Metal-air Flow Batteries (Mafb) and Metal-air Fuel Cells (Mafc)mentioning

confidence: 98%

Redox Flow Batteries: Materials, Design and Prospects

et al. 2021

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The implementation of renewable energy sources is rapidly growing in the electrical sector. This is a major step for civilization since it will reduce the carbon footprint and ensure a sustainable future. Nevertheless, these sources of energy are far from perfect and require complementary technologies to ensure dispatchable energy and this requires storage. In the last few decades, redox flow batteries (RFB) have been revealed to be an interesting alternative for this application, mainly due to their versatility and scalability. This technology has been the focus of intense research and great advances in the last decade. This review aims to summarize the most relevant advances achieved in the last few years, i.e., from 2015 until the middle of 2021. A synopsis of the different types of RFB technology will be conducted. Particular attention will be given to vanadium redox flow batteries (VRFB), the most mature RFB technology, but also to the emerging most promising chemistries. An in-depth review will be performed regarding the main innovations, materials, and designs. The main drawbacks and future perspectives for this technology will also be addressed.

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Section: Metal-air Flow Batteries (Mafb) and Metal-air Fuel Cells (Mafc)mentioning

confidence: 98%

Redox Flow Batteries: Materials, Design and Prospects

et al. 2021

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“…Zhu et al [148] reported a novel battery design utilizing a nanostructured lithium manganese oxide cathode and a hydrogen gas anode in an aqueous electrolyte. A vanadium-oxygen RFB used a 3.6 M V 2+/3+ ion concentration at the anode and H 2 O/O 2 redox reaction at the cathode generating an overall OCV of 1.49 V [149].…”

Section: Hybrid Reactants In Eesmentioning

confidence: 99%

Recent Advances in the Unconventional Design of Electrochemical Energy Storage and Conversion Devices

Venkatesan

Nandy

Karan

et al. 2022

Electrochem. Energy Rev.

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As the world works to move away from traditional energy sources, effective efficient energy storage devices have become a key factor for success. The emergence of unconventional electrochemical energy storage devices, including hybrid batteries, hybrid redox flow cells and bacterial batteries, is part of the solution. These alternative electrochemical cell configurations provide materials and operating condition flexibility while offering high-energy conversion efficiency and modularity of design-to-design devices. The power of these diverse devices ranges from a few milliwatts to several megawatts. Manufacturing durable electronic and point-of-care devices is possible due to the development of all-solid-state batteries with efficient electrodes for long cycling and high energy density. New batteries made of earth-abundant metal ions are approaching the capacity of lithium-ion batteries. Costs are being reduced with the advent of flow batteries with engineered redox molecules for high energy density and membrane-free power generating electrochemical cells, which utilize liquid dynamics and interfaces (solid, liquid, and gaseous) for electrolyte separation. These batteries support electrode regeneration strategies for chemical and bio-batteries reducing battery energy costs. Other batteries have different benefits, e.g., carbon-neutral Li-CO2 batteries consume CO2 and generate power, offering dual-purpose energy storage and carbon sequestration. This work considers the recent technological advances of energy storage devices. Their transition from conventional to unconventional battery designs is examined to identify operational flexibilities, overall energy storage/conversion efficiency and application compatibility. Finally, a list of facilities for large-scale deployment of major electrochemical energy storage routes is provided. Graphical abstract

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“…The overall standard cell potential is 1.26 V at 25 o C, but for a cell comprising an electrolyte composition of 2 M vanadium in 5 M sulphuric acid, the open-circuit potentials is 1.4 and 1.6 V at 50% and 100% state of charge (SOC) respectively. 97…”

Section: Cell Reactionsmentioning

confidence: 99%

“…[88][89][90][91][92][93] • V O −1 redox fuel cell. [94][95][96][97] This paper presents some of the highlights of the UNSW All-Vanadium Redox Flow Cell R&D program.…”

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confidence: 99%

Review—Highlights of UNSW All-Vanadium Redox Battery Development: 1983 to Present

Skyllas‐Kazacos

2022

J. Electrochem. Soc.

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The Vanadium flow battery (VFB) was taken from the initial concept stage at UNSW in 1983 through the development and demonstration of several 1-5 kW prototypes in stationary and electric vehicle applications in the 1990s with on-going research activities continuing to the present day. As part of this 38 year R&D program, a wide range of research projects was undertaken in the areas of electrodes and membranes, electrolyte process development and characterization, electrolyte additives and precipitation inhibitors, conducting plastic bipolar plate formulation and manufacturing trials, mathematical modeling of membrane transfer, shunt currents and pumping energy losses in bipolar stacks, thermal modeling of redox cells under a range of operating conditions, impedance spectroscopy and control system development, sensors and state-of-charge monitoring, chemical and electrochemical rebalancing, gelled electrolyte, vanadium bromide cell and V/O redox fuel cell. Several field trials of the VFB were conducted by UNSW in the mid-1990s with early licensing leading to large-scale demonstrations and significant commercialization activities in a wide range of applications around the world. This paper presents an historical overview of the research, development and early field trials of the all-Vanadium redox flow battery at UNSW between 1983 and 2021.

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Vanadium Oxygen Fuel Cell Utilising High Concentration Electrolyte

Cited by 20 publications

References 30 publications

Redox Flow Batteries: Materials, Design and Prospects

Redox Flow Batteries: Materials, Design and Prospects

Recent Advances in the Unconventional Design of Electrochemical Energy Storage and Conversion Devices

Review—Highlights of UNSW All-Vanadium Redox Battery Development: 1983 to Present

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