Al-Intercalated MnO2 cathode with reversible phase transition for aqueous Zn-Ion batteries

Chen, Cong; Shi, Minjie; Zhao, Yue; Yang, Cheng; Zhao, Liping; Yan, Chao

doi:10.1016/j.cej.2021.130375

Cited by 141 publications

(83 citation statements)

References 74 publications

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“…[ 31 , 39 , 40 , 41 , 42 ] Some inspiring studies have employed these strategies to boost the zinc ion storage performance of MnO 2 . [ 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 ] However, most researches involve complex multi‐step synthesis methods and more explorations are needed to further optimize the electrochemical performance. Therefore, it is highly desirable to introduce oxygen vacancy and heteroatom doping into MnO 2 simultaneously via a facile and efficient approach.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Nitrogen‐Doped KMn₈O₁₆ with Oxygen Vacancy for Stable Zinc‐Ion Batteries

et al. 2022

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The development of MnO 2 as a cathode for aqueous zinc-ion batteries (AZIBs) is severely limited by the low intrinsic electrical conductivity and unstable crystal structure. Herein, a multifunctional modification strategy is proposed to construct N-doped KMn 8 O 16 with abundant oxygen vacancy and large specific surface area (named as N-KMO) through a facile one-step hydrothermal approach. The synergetic effects of N-doping, oxygen vacancy, and porous structure in N-KMO can effectively suppress the dissolution of manganese ions, and promote ion diffusion and electron conduction. As a result, the N-KMO cathode exhibits dramatically improved stability and reaction kinetics, superior to the pristine MnO 2 and MnO 2 with only oxygen vacancy. Remarkably, the N-KMO cathode delivers a high reversible capacity of 262 mAh g −1 after 2500 cycles at 1 A g −1 with a capacity retention of 91%. Simultaneously, the highest specific capacity can reach 298 mAh g −1 at 0.1 A g −1 . Theoretical calculations reveal that the oxygen vacancy and N-doping can improve the electrical conductivity of MnO 2 and thus account for the outstanding rate performance. Moreover, ex situ characterizations indicate that the energy storage mechanism of the N-KMO cathode is mainly a H + and Zn 2+ co-insertion/extraction process.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Nitrogen‐Doped KMn₈O₁₆ with Oxygen Vacancy for Stable Zinc‐Ion Batteries

et al. 2022

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“…For example, Chen et al reported Alintercalation engineering of MnO 2 cathode that delivers high capacity and ultra-long cycle life. 61 The study of the cathode structure shows that the Al-intercalation leads to the formation of strong Al-O bonds in the tunnel-type MnO 2 framework (Figure 6A). This structure mitigates Mn dissolution and facilitates Zn 2+ storage properties.…”

Section: Ionic Intercalationmentioning

confidence: 99%

Manganese‐based materials as cathode for rechargeable aqueous zinc‐ion batteries

Guo

Zhang

2022

Battery Energy

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Rechargeable aqueous zinc-ion batteries (ZIBs) are promising candidates for advanced electrical energy storage systems owing to low cost, intrinsic safety, environmental benignity, and decent energy densities. Currently, significant research efforts are being made to develop high-performance positive electrodes for ZIBs. Nevertheless, there are still many obstacles to be overcome in pursuit of the comprehensive performance of cathode materials, including specific capacity, structural stability, rate performance, and so forth. Many manganese-based compounds have become the hotspots in the study of ZIB cathodes due to their advantages of natural abundance, less toxicity, and high operating voltage. Here, different energy storage mechanisms of various kinds of manganese-based compounds are summarized. Electrochemical results of manganese-based cathodes are compared and analyzed. Moreover, optimization strategies for addressing existing issues of these materials and improving ZIBs are discussed in detail.

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“…Zn metal is usually electrodeposited on CCs to fabricate flexible zinc ion batteries. [52][53][54][55][56][57][58][59][60] The deposited Zn on CCs is usually reported to be in the form of nanosheets, which provide more active sites for Zn nucleation and may inhibit Zn dendrite formation. 12 In practice, the CCs are often activated 61 to increase their porosity or treated with oxidizing acids 48 to improve their hydrophilicity and facilitate uniform metal deposition.…”

Section: Flexible-substrate-supported Anodesmentioning

confidence: 99%

“…The binders are usually polyvinylidene fluoride or poly(tetrafluoroethylene), among which the former is more commonly used. CCs are the most common current collectors for the flexible cathodes prepared with binders, 40,[54][55][56][57]61,[70][71][72][73] and some other flexible substrates are also reported, such as carbon papers, 65,66 stainless-steel films, 33 and graphene oxide (GO)-CNT hybrid films. 74 Ma et al prepared a binder-contained cathode with CC for flexible aqueous zinc-iodine batteries.…”

Section: Binder-containing Cathodesmentioning

confidence: 99%

Recent progress of flexible aqueous multivalent ion batteries

Wang

et al. 2022

Carbon Energy

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Flexible aqueous batteries have been thriving with the growing demand for wearable and portable electrical devices. In particular, flexible aqueous multivalent ion batteries (FAMIBs), the charge carriers of which include Zn 2+ , Al 3+ , Mg 2+ , and Ca 2+ , have great potential for development owing to their high safety, high elemental abundance in the Earth's crust, and a multielectron redox mechanism with a high theoretical specific capacity. Therefore, for a comprehensive understanding of this developing field, it is necessary to summarize the recent research progress of FAMIBs in a timely manner.Herein, the advancements of the state-of-the-art FAMIBs are reviewed, and the prospects toward this field are also proposed. This study focuses on the rational material and configuration design for FAMIBs in recent studies to achieve high battery performances under deformation conditions, which is elaborated on by classification of the anode, cathode, hydrogel electrolyte, and configurations of FAMIBs. Besides, the electrochemical performance of FAMIBs under flexible conditions is also reviewed from the perspective of their working voltage, specific capacity, and cycling stability. Finally, the approaches to improve the performance of FAMIBs are comprehensively evaluated, followed by the outlook on the challenges and opportunities in future development of FAMIBs.

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Al-Intercalated MnO2 cathode with reversible phase transition for aqueous Zn-Ion batteries

Cited by 141 publications

References 74 publications

Synthesis of Nitrogen‐Doped KMn₈O₁₆ with Oxygen Vacancy for Stable Zinc‐Ion Batteries

Synthesis of Nitrogen‐Doped KMn₈O₁₆ with Oxygen Vacancy for Stable Zinc‐Ion Batteries

Manganese‐based materials as cathode for rechargeable aqueous zinc‐ion batteries

Recent progress of flexible aqueous multivalent ion batteries

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Al-Intercalated MnO2 cathode with reversible phase transition for aqueous Zn-Ion batteries

Cited by 141 publications

References 74 publications

Synthesis of Nitrogen‐Doped KMn8O16 with Oxygen Vacancy for Stable Zinc‐Ion Batteries

Synthesis of Nitrogen‐Doped KMn8O16 with Oxygen Vacancy for Stable Zinc‐Ion Batteries

Manganese‐based materials as cathode for rechargeable aqueous zinc‐ion batteries

Recent progress of flexible aqueous multivalent ion batteries

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Synthesis of Nitrogen‐Doped KMn₈O₁₆ with Oxygen Vacancy for Stable Zinc‐Ion Batteries

Synthesis of Nitrogen‐Doped KMn₈O₁₆ with Oxygen Vacancy for Stable Zinc‐Ion Batteries