High-energy and high-power Zn–Ni flow batteries with semi-solid electrodes

Zhu, Yun; Narayanan, Thaneer Malai; Tułodziecki, Michał; Sanchez-Casalongue, Hernan; Horn, Quinn C.; Meda, L.; Yu, Yang; Sun, Jame; Regier, Tom; McKinley, Gareth H.; Shao‐Horn, Yang

doi:10.1039/d0se00675k

Cited by 19 publications

(15 citation statements)

References 70 publications

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“…This can be achieved by immersing the active material and the electronically conductive agent in yield-stress fluids like Carbopol (Zhu et al. 2020). Therefore, we can use the predicted to determine the size of the active particles to optimize the design and operation of semi-solid electrodes.…”

Section: Discussionmentioning

confidence: 99%

“…In applications such as semi-solid flow batteries (Duduta et al 2011), it is critical to keep the contact between the active material (electrode particles) and the conductive wiring (carbon nanoparticle network) intact during operation (Wei et al 2015). This can be achieved by immersing the active material and the electronically conductive agent in yield-stress fluids like Carbopol (Zhu et al 2020). Therefore, we can use the predicted ΔP c /τ y to determine the size of the active particles to optimize the design and operation of semi-solid electrodes.…”

Section: Discussionmentioning

confidence: 99%

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The first open channel for yield-stress fluids in porous media

Fraggedakis

Chaparian²,

Tammisola

2021

J. Fluid Mech.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The first open channel for yield-stress fluids in porous media

Fraggedakis

Chaparian²,

Tammisola

2021

J. Fluid Mech.

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“…In applications such as semisolid flow batteries [11], it is critical to keep the contact between the active material (electrode particles) and the conductive wiring (carbon nanoparticle network) intact during operation, otherwise there is a significant energy loss during cycling of the battery [61,62]. This can be achieved by immersing the active material and the electronically conductive agent in yield-stress fluids like Carbopol [63]. Therefore, we can use the predicted ∆P c /τ y to determine the size of the active particles to optimize the design and operation of semi-solid electrodes.…”

Section: Discussionmentioning

confidence: 99%

The first open channel for a yield-stress fluid in complex porous media

Fraggedakis,

Chaparian,

Tammisola

2020

Preprint

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The prediction of the first fluidized path of a yield-stress fluid in complex porous media is a challenging yet an important task to understand the fundamentals of fluid flow in several industrial and biological processes. In most cases, the conditions that open this first path are known either through experiments or expensive computations. Here, we present a simple network model to predict the first open channel for a yield-stress fluid in a complex porous medium. For porous media made of non-overlapping disks, we find that the pressure drop required to open the first channel for given yield stress depends on both the relative disks size to the macroscopic length of the system and the packing fraction. We also report the statistics on the arc-length of the first open path. Finally, we discuss the implication of our results on the design of porous media used in energy storage applications.

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“…Since the concentration of these redox species is not limited by the solubility threshold, it is possible to achieve higher energy densities both with inorganic or organic redox species [59,259,260,[262][263][264][265][266][267]. Additionally, the semi-solid RFB can be either aqueous [268,269] or non-aqueous, such as the one represented in Figure 11. Furthermore, decreasing the particle size will result in improved diffusion, enhanced charge transfer, and higher current densities [270].…”

Section: Without Redox Mediatormentioning

confidence: 99%

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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High-energy and high-power Zn–Ni flow batteries with semi-solid electrodes

Abstract: Careful rheological design and electrochemical optimization of conductive ZnO and Ni(OH)2 active semi-solid flowable electrodes is essential to achieve a high-energy and high-power Zn–Ni flow battery.

Cited by 19 publications

References 70 publications

The first open channel for yield-stress fluids in porous media

The first open channel for yield-stress fluids in porous media

The first open channel for a yield-stress fluid in complex porous media

Redox Flow Batteries: Materials, Design and Prospects

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