Metal–iodine batteries: achievements, challenges, and future

Zhang, Leiqian; Guo, Hele; Zong, Wei; Huang, Yunpeng; Huang, Jiajia; He, Guanjie; Liu, Tianxi; Hofkens, Johan; Lai, Feili

doi:10.1039/d3ee01677c

Cited by 23 publications

(5 citation statements)

References 268 publications

(593 reference statements)

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“…In addition to this, iodine is inherently thermally unstable, making it susceptible to volatilization even at room temperature, and I 2 are also electrically insulating, which inevitably leads to slow redox kinetics, high polarization, low energy density, and low iodine availability [49]. In order to solve the above problems, it is necessary to search for materials that strongly interact with iodine and polyiodides, thus improving the thermal stability of iodine and suppressing the shuttle effect of iodine [50].…”

Section: Shuttle Effectmentioning

confidence: 99%

Suppressing the Shuttle Effect of Aqueous Zinc–Iodine Batteries: Progress and Prospects

Li,

Wu,

et al. 2024

Materials

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Aqueous zinc–iodine batteries are considered to be one of the most promising devices for future electrical energy storage due to their low cost, high safety, high theoretical specific capacity, and multivalent properties. However, the shuttle effect currently faced by zinc–iodine batteries causes the loss of cathode active material and corrosion of the zinc anodes, limiting the large-scale application of zinc–iodine batteries. In this paper, the electrochemical processes of iodine conversion and the zinc anode, as well as the induced mechanism of the shuttle effect, are introduced from the basic configuration of the aqueous zinc–iodine battery. Then, the inhibition strategy of the shuttle effect is summarized from four aspects: the design of cathode materials, electrolyte regulation, the modification of the separator, and anode protection. Finally, the current status of aqueous zinc–iodine batteries is analyzed and recommendations and perspectives are presented. This review is expected to deepen the understanding of aqueous zinc–iodide batteries and is expected to guide the design of high-performance aqueous zinc–iodide batteries.

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Section: Shuttle Effectmentioning

confidence: 99%

Suppressing the Shuttle Effect of Aqueous Zinc–Iodine Batteries: Progress and Prospects

Li,

Wu,

et al. 2024

Materials

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“…Aqueous zinc–iodine (Zn–I 2 ) batteries are promising candidates for large-scale energy storage devices due to their notable attributes, such as high energy/power density, enhanced safety, low cost, and wide availability. 1–5 However, the scalable application potentials of Zn–I 2 batteries are still compromised by some key inherent problems associated with iodine cathodes, such as limited utilization of active components and the significant volumetric expansion of iodine during repeated discharging/recharging processes. 6–10 While engineering the composition and/or structure of composite iodine cathodes provides possible solutions to increase iodine utilization, there is a trade-off in cathode materials between specific capacity and active materials content, thereby compromising the available specific energy of Zn–I 2 cells.…”

Section: Introductionmentioning

confidence: 99%

Unleashing the high energy potential of zinc–iodide batteries: high-loaded thick electrodes designed with zinc iodide as the cathode

Ma,

Azizi,

Zhang

et al. 2024

Chem. Sci.

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“…Iodine-iodide redox chemistry has gained significance in diverse electrochemical energy technologies, such as supercapacitors, − batteries (specifically metal–iodine and iodine-based redox flow batteries), − solar cells, − and hydrogen production. − This is attributed to its lower overpotential, high theoretical storage capacity, cost-effectiveness, and natural abundance of iodine. In supercapacitors, specifically, integrating redox active additives in the electrolyte has emerged as a prominent strategy to enhance their energy density. ,, Among the various redox additives investigated in earlier studies, iodide-based additives employing iodine-iodide redox chemistry have shown exceptional promise, boasting an incredibly high specific capacitance exceeding 1000 F g –1 . , …”

Section: Introductionmentioning

confidence: 99%

Role of Pore Architecture on the Confinement of Electrogenerated Iodine in Iodide-Based Energy Storage Systems

Ishita,

Radhakanth,

Sow

et al. 2024

J. Phys. Chem. C

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Iodine-iodide redox reactions are pivotal in diverse energy storage and production technologies. The electrooxidation of iodide ions (I − ) involves the formation of a solid I 2 film on the electrode surface that impedes the further electrooxidation process and therefore has a significant implication on the performance of iodine-iodide redox chemistry-based systems. In this work, we have illustrated the role of pore structure in the accumulation of the I 2 film and its consequent effect on charge storage capabilities. Freestanding electrospun carbon nanofibers (CNFs) with varying pore architectures were synthesized through strategic selection of sacrificial material. The mechanistic understanding of the I 2 -film formation within these porous CNF electrodes is elucidated compared to that of a planar electrode. The cyclic stability tests demonstrated a loss in capacitance, attributed to gradual I 2 -film accumulation on the CNFs over multiple redox cycles. A mathematical model has been proposed to simulate this capacitance loss and understand its dependence on the pore structure in the CNFs. It was deduced that while macropores contribute to an exponential reduction in capacitance, meso-/micropores result in a near-linear reduction in capacitance with cycling. This is attributed to the lower diffusional resistance to the transport of electroactive I − ions offered by the macropores and, thereby, a higher propensity toward I 2 -film formation and accumulation. Furthermore, self-discharge studies revealed that surfaces with a higher fraction of meso-/micropores demonstrated relatively slower self-discharge compared to macropores.

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Metal–iodine batteries: achievements, challenges, and future

Abstract: Metal-iodine batteries (MIBs) are becoming increasingly popular due to intrincis advantages, such as a limited number of reaction intermediates, high electrochemical reversibility, eco-friendliness, safety, and managable cost. This review details...

Cited by 23 publications

References 268 publications

Suppressing the Shuttle Effect of Aqueous Zinc–Iodine Batteries: Progress and Prospects

Suppressing the Shuttle Effect of Aqueous Zinc–Iodine Batteries: Progress and Prospects

Unleashing the high energy potential of zinc–iodide batteries: high-loaded thick electrodes designed with zinc iodide as the cathode

Role of Pore Architecture on the Confinement of Electrogenerated Iodine in Iodide-Based Energy Storage Systems

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