Synergetic Modulation on Solvation Structure and Electrode Interface Enables a Highly Reversible Zinc Anode for Zinc-Iron Flow Batteries

Article Chemistry, Multidisciplinary

Highly Active Hollow Porous Carbon Spheres@Graphite Felt Composite Electrode for High Power Density Vanadium Flow Batteries

Fei Xing et al.

Summary: By using a hollow porous carbon sphere as a catalyst, the polarization loss of vanadium flow batteries can be reduced, resulting in a higher energy efficiency and power density.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Review Physics, Applied

Recent progress in zinc-based redox flow batteries: a review

Guixiang Wang et al.

Summary: This review summarizes different types of zinc-based redox flow batteries (ZRFBs) according to their electrolyte environments, highlights the advances of key materials including electrode and membrane materials, and discusses the challenges and perspectives for the future development of high-performance ZRFBs.

JOURNAL OF PHYSICS D-APPLIED PHYSICS (2022)

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Article Nanoscience & Nanotechnology

Manipulating Interfacial Stability Via Absorption-Competition Mechanism for Long-Lifespan Zn Anode

Meijia Qiu et al.

Summary: In this study, aromatic aldehyde additives were used to modulate the interface reactions between Zn anode and electrolyte in Zn-based energy storage devices. By competing with redox reactions, these additives prevented the decomposition of active H2O and uncontrollable growth of Zn dendrites, resulting in improved stability of the devices.

NANO-MICRO LETTERS (2022)

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Article Chemistry, Physical

High performance and long cycle life neutral zinc-iron flow batteries enabled by zinc-bromide complexation

Minghui Yang et al.

Summary: Zinc-based flow batteries with bromide ions as stabilizers show improved redox reversibility between Zn and Zn2+. The addition of ZnBr2 as an electrolyte additive promotes the coordination interactions between Zn2+ and Br-, enhancing the efficiency and cycling stability of neutral Zn/Fe flow batteries for large-scale energy storage.

ENERGY STORAGE MATERIALS (2022)

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Article Chemistry, Physical

Oxygen-induced electrode activation and modulation essence towards enhanced anode redox chemistry for vanadium flow batteries

Kaiyue Zhang et al.

Summary: Researchers have enhanced the anode redox chemistry of vanadium flow batteries by tailoring oxygen functional groups on carbon felts, leading to improved energy efficiency and long-term cycling stability.

ENERGY STORAGE MATERIALS (2021)

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Article Chemistry, Physical

A trifunctional electrolyte for high-performance zinc-iodine flow batteries

Q. P. Jian et al.

Summary: The NH4Br improved electrolyte for zinc-iodine flow battery enhances ionic conductivity, reduces iodine precipitation and zinc dendrite growth, improves kinetics and reversibility of redox couples, and provides high energy efficiency, charge capacity, and cycle life compared to conventional electrolyte.

JOURNAL OF POWER SOURCES (2021)

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Article Energy & Fuels

Assessment methods and performance metrics for redox flow batteries

Yanxin Yao et al.

Summary: Redox flow batteries have great potential for large-scale energy storage, but the lack of consistency in testing methods and assessment metrics makes it challenging to compare their performance. This article discusses RFB assessment methods, performance metrics, decay mechanisms, and proposes testing protocols, reporting practices, and comparison criteria under a general framework of symmetric and asymmetric full RFBs.

NATURE ENERGY (2021)

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Article Chemistry, Multidisciplinary

Multifunctional Carbon Felt Electrode with N-Rich Defects Enables a Long-Cycle Zinc-Bromine Flow Battery with Ultrahigh Power Density

Wenjing Lu et al.

Summary: By fabricating N-rich defects in the multifunctional carbon felt-based electrode NTCF for zinc-bromine flow batteries (ZBFBs), high catalytic activity for Br-2/Br- reactions and uniform zinc deposition can be achieved. This allows for stable operation at unprecedentedly high current density and long cycle life.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Energy & Fuels

Polysulfide-based redox flow batteries with long life and low levelized cost enabled by charge-reinforced ion-selective membranes

Zhejun Li et al.

Summary: The study introduces a membrane design to reduce capacity decay in polysulfide-based ARFBs over long cycles and durations, enhancing cost-effectiveness. By developing a charge-reinforced ion-selective membrane, the polysulfide flow battery demonstrates stable cycling with low capacity decay rate. Small-angle X-ray scattering and in-situ attenuated total reflectance-Fourier transform infrared/solid-state NMR indicate improved membrane properties compared to commercial Nafion membrane.

NATURE ENERGY (2021)

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Article Engineering, Environmental

Promoting vanadium redox flow battery performance by ultra-uniform ZrO2@C from metal-organic framework

Yingqiao Jiang et al.

Summary: This study demonstrates the successful use of metal-organic framework to prepare metal oxide and porous carbon nanocomposite for improving the performance of vanadium redox flow battery. The ZrO2@C/GF composite shows superior effects in promoting diffusion, charge transfer, and electron transport, leading to enhanced stability and electrolyte utilization in the battery.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Chemistry, Multidisciplinary

A highly reversible zinc deposition for flow batteries regulated by critical concentration induced nucleation

Shengnan Wang et al.

Summary: The morphology evolution of Zn deposited in ZFBs is influenced by the concentration of the electrolyte, resulting in dense blocky Zn in concentrated electrolyte and mossy Zn in dilute electrolyte. The dominant crystal plane of Zn also shifts from (002) to (101) with the change in electrolyte concentration. Furthermore, recombination of Zn crystals on the same crystal plane was observed during the experiment. The research proposes an operating critical concentration range and optimized electrolyte utilization rate to maintain high coulombic efficiency and long cycling stability for Zn anodes in electrochemical energy storage devices.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Article Energy & Fuels

Advances in the design and fabrication of high-performance flow battery electrodes for renewable energy storage

Jing Sun et al.

Summary: This review summarizes recent developments in the design and fabrication of electrospun carbon fibers for high-performance flow batteries, emphasizing the key parameters and factors that influence electrode properties. Insights are offered for the design and development of advanced electrodes for next-generation flow batteries in the application of renewable energy storage.

ADVANCES IN APPLIED ENERGY (2021)

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Article Chemistry, Multidisciplinary