Adjusting Zn2+ diffusion kinetics and storage capability of MnOOH nanofibers for high-performance cathode of aqueous zinc-ion batteries

Chen, Lijuan; Dong, Yaoyong; Han, Mengwei; Song, Ting; Zheng, Xuejun; He, Wen; Long, Bei; Wu, Xiongwei; Pei, Yong; Wang, Xianyou

doi:10.1016/j.cej.2023.145046

Cited by 15 publications

(3 citation statements)

References 48 publications

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“…This observation provides additional evidence supporting the co-intercalation/de-intercalation of H + /Zn 2+ in Ag@MnO 2 . 43 The HRTEM image of the charged electrode material, as shown in Fig. 4e and f, displays a distinct lattice spacing of 0.265 nm, which is attributed to MnO 2 .…”

Section: Resultsmentioning

confidence: 94%

A silver and manganese dioxide composite with oxygen vacancies as a high-performance cathode material for aqueous zinc-ion batteries

Wang,

Zhang

et al. 2024

Dalton Trans.

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Section: Resultsmentioning

confidence: 94%

A silver and manganese dioxide composite with oxygen vacancies as a high-performance cathode material for aqueous zinc-ion batteries

Wang,

Zhang

et al. 2024

Dalton Trans.

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“…Moreover, it can be noticed that the two discharge plateaus of α-MnO 2 are gradually difficult to discern at higher current densities, which could be caused by a dominant role of H + insertion in the discharge process at a high rate. This significant disparity can be traced to the different redox reactions in the stepwise process of H + and Zn 2+ insertion. , Specifically, H + has a smaller radius and faster migration speed compared to those of Zn 2+ . This result can explain that H + owns a larger diffusion coefficient than that of Zn 2+ .…”

Section: Resultsmentioning

confidence: 99%

“…This significant disparity can be traced to the different redox reactions in the stepwise process of H + and Zn 2+ insertion. 50,55 Specifically, H + has a smaller radius and faster migration speed compared to those of Zn 2+ . This result can explain that H + owns a larger diffusion coefficient than that of Zn 2+ .…”

Section: ■ Introductionmentioning

confidence: 99%

Potassium-Ion-Doped Manganese Oxides and Kaolinite Electrolyte Additives for Aqueous Zinc-Ion Batteries

Li,

Qin,

Liu

et al. 2024

ACS Appl. Nano Mater.

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Manganese oxide is considered as a cathode material with great application potential for zinc-ion batteries (ZIBs). However, the dissolution, low electrical conductivity, and slow ion diffusion rate of manganese oxide are the main limiting factors to its rate capacity and cycle stability. Here, K-doped α-MnO2 nanowires were employed as cathode materials for ZIBs in conjunction with kaolinite (KL) as an electrolyte additive. The combination of ion doping and the KL electrolyte additive made the batteries exhibit remarkable zinc energy storage properties, including an improved capacity of 226 mAh g–1, excellent cycle stability with a capacity retention rate of 99.5% at 0.5 A g–1 after 270 cycles, and improved rate performances. The expansion of the tunnel structure spacing in supported α-MnO2 induced by K+ intercalation intentionally creates additional space for the efficient transportation of H+/Zn2+ ions during the discharge/charge process. The KL electrolyte additive improves the ion conductivity of the battery. The evolution of diffraction peaks and morphological changes of 5ZHS, 0.5ZHS, ZnMn2O4, and MnOOH during the discharge/charge process demonstrate the cointercalation of the H+/Zn2+ mechanism.

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Cation Defect‐Engineered Boost Fast Kinetics of Two‐Dimensional Topological Bi₂Se₃ Cathode for High‐Performance Aqueous Zn‐Ion Batteries

Zong,

Chen,

Wang

et al. 2023

Advanced Materials

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The challenge with aqueous zinc‐ion batteries (ZIBs) lies in finding suitable cathode materials that can provide high capacity and fast kinetics. Herein, two‐dimensional topological Bi2Se3 with acceptable Bi‐vacancies for ZIBs cathode (Cu‐Bi2‐xSe3) is constructed through one‐step hydrothermal process accompanied by Cu heteroatom introduction. The cation‐deficient Cu‐Bi2‐xSe3 nanosheets (∼ 4 nm) bring improved conductivity from large surface topological metal states contribution and enhanced bulk conductivity. Besides, the increased adsorption energy and reduced Zn2+ migration barrier demonstrated by density‐functional theory (DFT) calculations illustrate the decreased Coulombic ion‐lattice repulsion of Cu‐Bi2‐xSe3. Therefore, Cu‐Bi2‐xSe3 exhibits both enhanced ion and electron transport capability, leading to more carrier reversible insertion proved by in‐situ synchrotron X‐ray diffraction (SXRD). These features endow Cu‐Bi2‐xSe3 with sufficient specific capacity (320 mA h g−1 at 0.1 A g−1), high‐rate performance (97 mA h g−1 at 10 A g−1), and reliable cycling stability (70 mA h g−1 at 10 A g−1 after 4000 cycles). Furthermore, quasi‐solid‐state fiber‐shaped ZIBs employing the Cu‐Bi2‐xSe3 cathode demonstrate respectable performance and superior flexibility even under high mass loading. This work implements a conceptually innovative strategy represented by cation defect design in topological insulator cathode for achieving high‐performance battery electrochemistry.This article is protected by copyright. All rights reserved

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Adjusting Zn2+ diffusion kinetics and storage capability of MnOOH nanofibers for high-performance cathode of aqueous zinc-ion batteries

Cited by 15 publications

References 48 publications

A silver and manganese dioxide composite with oxygen vacancies as a high-performance cathode material for aqueous zinc-ion batteries

A silver and manganese dioxide composite with oxygen vacancies as a high-performance cathode material for aqueous zinc-ion batteries

Potassium-Ion-Doped Manganese Oxides and Kaolinite Electrolyte Additives for Aqueous Zinc-Ion Batteries

Cation Defect‐Engineered Boost Fast Kinetics of Two‐Dimensional Topological Bi₂Se₃ Cathode for High‐Performance Aqueous Zn‐Ion Batteries

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Adjusting Zn2+ diffusion kinetics and storage capability of MnOOH nanofibers for high-performance cathode of aqueous zinc-ion batteries

Cited by 15 publications

References 48 publications

A silver and manganese dioxide composite with oxygen vacancies as a high-performance cathode material for aqueous zinc-ion batteries

A silver and manganese dioxide composite with oxygen vacancies as a high-performance cathode material for aqueous zinc-ion batteries

Potassium-Ion-Doped Manganese Oxides and Kaolinite Electrolyte Additives for Aqueous Zinc-Ion Batteries

Cation Defect‐Engineered Boost Fast Kinetics of Two‐Dimensional Topological Bi2Se3 Cathode for High‐Performance Aqueous Zn‐Ion Batteries

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Cation Defect‐Engineered Boost Fast Kinetics of Two‐Dimensional Topological Bi₂Se₃ Cathode for High‐Performance Aqueous Zn‐Ion Batteries