Conductive polymer composites cathodes for rechargeable aqueous Zn-ion batteries: A mini-review

He, Guanjie; Liu, Yiyang; Gray, Daisy E.; Othon, James

doi:10.1016/j.coco.2021.100882

Cited by 47 publications

(37 citation statements)

References 51 publications

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“…[ 7 , 8 ] As an emerging metal anode, Zn can deliver a dip redox potential (−0.76 V vs standard hydrogen electrode [SHE]) and a high theoretical capacity of 820 mAh g −1 . [ 9 , 10 , 11 ] When coupled with an iodine cathode (I 2 /I − , 0.62 V vs SHE) that has a moderate theoretical capacity of 211 mAh g −1 , the as‐assembled Zn‐I 2 batteries present a promising theoretical energy density of ≈220 Wh kg −1 based on the total mass of the active materials of the cathode and anode. [ 12 , 13 , 14 ] Moreover, compared with non‐aqueous electrolytes (≈1–10 mS cm −1 ), the aqueous electrolytes used in Zn‐I 2 batteries normally exhibit higher ionic conductivities up to 1 S cm −1 , which favors fast charging/discharging behaviors for real‐life needs.…”

Section: Introductionmentioning

confidence: 99%

A Universal Polyiodide Regulation Using Quaternization Engineering toward High Value‐Added and Ultra‐Stable Zinc‐Iodine Batteries

Zhang

Guo

et al. 2022

Advanced Science

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The development of aqueous rechargeable zinc-iodine (Zn-I 2 ) batteries is still plagued by the polyiodide shuttle issue, which frequently causes batteries to have inadequate cycle lifetimes. In this study, quaternization engineering based on the concept of "electric double layer" is developed on a commercial acrylic fiber skeleton ($1.55-1.7 kg −1 ) to precisely constrain the polyiodide and enhance the cycling durability of Zn-I 2 batteries. Consequently, a high-rate (1 C-146.1 mAh g −1 , 10 C-133.8 mAh g −1 ) as well as, ultra-stable (2000 cycles at 20 C with 97.24% capacity retention) polymer-based Zn-I 2 battery is reported. These traits are derived from the strong electrostatic interaction generated by quaternization engineering, which significantly eliminates the polyiodide shuttle issue and simultaneously realizes peculiar solution-based iodine chemistry (I − /I 3 − ) in Zn-I 2 batteries. The quaternization strategy also presents high practicability, reliability, and extensibility in various complicated environments. In particular, cutting-edge Zn-I 2 batteries based on the concept of derivative material (commercially available quaternized resin) demonstrate ≈100% capacity retention over 17 000 cycles at 20 C. This work provides a general and fresh insight into the design and development of large-scale, low-cost, and high-performance zinc-iodine batteries, as well as, other novel iodine storage systems.

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Section: Introductionmentioning

confidence: 99%

A Universal Polyiodide Regulation Using Quaternization Engineering toward High Value‐Added and Ultra‐Stable Zinc‐Iodine Batteries

Zhang

Guo

et al. 2022

Advanced Science

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“…Accordingly, a conductive matrix or network should be constructed to join the crystals together to improve the intergranular conductivity, which will play a synergistic role with oxygen vacancies to enhance the external and internal energy storage dynamics of M x Mn y O z . [17][18][19][20] As an alternative conductive matrix, two-dimensional graphene-based materials have been employed as auxiliary materials to enhance battery performance. [21,22] However, these materials tend to restack to form densely structured bulks due to Van der Waals forces, which is unfavorable for electrolyte accessibility and the uniform distribution of active materials.…”

Section: Introductionmentioning

confidence: 99%

“…Although the internal conductivity within the crystals can be increased, the external transport dynamics and charge transfer among adjacent crystals cannot be improved by vacancy engineering. Accordingly, a conductive matrix or network should be constructed to join the crystals together to improve the intergranular conductivity, which will play a synergistic role with oxygen vacancies to enhance the external and internal energy storage dynamics of M x Mn y O z [17–20] . As an alternative conductive matrix, two‐dimensional graphene‐based materials have been employed as auxiliary materials to enhance battery performance [21,22] .…”

Section: Introductionmentioning

confidence: 99%

Structural Regulation of Oxygen Vacancy‐Rich K_0.5Mn₂O₄Cathode by Carbon Hybridization for Enhanced Zinc‐Ion Energy Storage

et al. 2022

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High‐voltage manganese‐based materials are considered as promising cathode materials for aqueous zinc‐ion batteries (AZIBs). Herein, oxygen vacancy‐rich K0.5Mn2O4 sheets were anchored uniformly onto honeycomb‐like interconnected carbon nanoflakes (CNF@K0.5Mn2O4) for AZIB cathode applications. In the composite, the CNFs provided excellent intergranular electron transport capability, while the oxygen vacancies enhanced the electron transport efficiency inside crystals, and the embedded K ions expanded the interlayer spacing and stabilized the layered crystal structure. A reversible specific capacity of 241 mAh g−1 could be maintained by the composite at 0.5 A g−1 for 400 cycles. A combination of ex‐situ analytical methods and density functional theory calculations was carried out to elucidate the electrochemical mechanism of reversible zinc storage. In addition, flexible quasi‐solid‐state batteries of Zn//CNF@K0.5Mn2O4 were constructed by substituting the traditional aqueous electrolyte for a quasi‐solid‐state gel electrolyte, which worked efficiently and exhibited high bending durability.

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“…Lithium-ion batteries, featured with high energy density, exhibit safety issues and high fabrication cost owing to the activity of alkali metals and flammable organic electrolytes [4,5]. In contrast, zinc-ion electrochemical energy storage devices, including zinc-ion batteries (ZIBs) and hybrid supercapacitors (ZHSs), show a high theoretical capacity of 820 mA h g −1 (Zn/Zn 2+ ) and low redox potential (−0.762 V vs. standard hydrogen electrode) of Zn anodes as well as aqueous electrolytes offering high safety and low cost [6][7][8]. Currently, the research interest in cathode materials, Zn anodes and elec-trolytes for ZIBs are increasing dramatically [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Self-assembled carbon nanoribbons with the heteroatom doping used as ultrafast charging cathodes in zinc-ion hybrid supercapacitors

Huang

Kang

et al. 2022

Sci. China Mater.

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Zinc-ion hybrid supercapacitors (ZHSs) are highly desirable for large-scale energy storage applications owing to the merits of high safety, low cost and ultra-long cycle life. The poor rate performance of cathodes, however, severely hinders their application. Herein, aqueous ZHSs with superior performance were fabricated by employing a series of ultrathin carbon nanobelts modified with B, N, O (CPTHB-Bx). The heteroatom doping can significantly modify the chemical behaviors of carbon frameworks, which could generate numerous active sites and accelerate the charge transport. The systematic investigation reveals that the B–N groups are active species for fast Zn-ion adsorption and desorption. As a result, the best-performed CPTHB-B2 exhibits an excellent electrochemical performance as cathodes in ZHSs, delivering a high specific capacitance of 415.3 F g−1 at 0.5 A g−1, a record high capacitance retention of 81% when increasing the current densities from 0.5 to 100 A g−1, an outstanding energy density of 131.9 W h kg−1 and an exceptionally high power density of 42.1 kW kg−1. Our work provides a new cathode design for ultrafast charging Zn-ion storage devices.

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Conductive polymer composites cathodes for rechargeable aqueous Zn-ion batteries: A mini-review

Cited by 47 publications

References 51 publications

A Universal Polyiodide Regulation Using Quaternization Engineering toward High Value‐Added and Ultra‐Stable Zinc‐Iodine Batteries

A Universal Polyiodide Regulation Using Quaternization Engineering toward High Value‐Added and Ultra‐Stable Zinc‐Iodine Batteries

Structural Regulation of Oxygen Vacancy‐Rich K_0.5Mn₂O₄Cathode by Carbon Hybridization for Enhanced Zinc‐Ion Energy Storage

Self-assembled carbon nanoribbons with the heteroatom doping used as ultrafast charging cathodes in zinc-ion hybrid supercapacitors

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Conductive polymer composites cathodes for rechargeable aqueous Zn-ion batteries: A mini-review

Cited by 47 publications

References 51 publications

A Universal Polyiodide Regulation Using Quaternization Engineering toward High Value‐Added and Ultra‐Stable Zinc‐Iodine Batteries

A Universal Polyiodide Regulation Using Quaternization Engineering toward High Value‐Added and Ultra‐Stable Zinc‐Iodine Batteries

Structural Regulation of Oxygen Vacancy‐Rich K0.5Mn2O4Cathode by Carbon Hybridization for Enhanced Zinc‐Ion Energy Storage

Self-assembled carbon nanoribbons with the heteroatom doping used as ultrafast charging cathodes in zinc-ion hybrid supercapacitors

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Structural Regulation of Oxygen Vacancy‐Rich K_0.5Mn₂O₄Cathode by Carbon Hybridization for Enhanced Zinc‐Ion Energy Storage