An ultrathin defect-rich Co<sub>3</sub>O<sub>4</sub> nanosheet cathode for high-energy and durable aqueous zinc ion batteries

Lu, Yongzhuang; Wang, Jing; Zeng, Siqi; Zhou, Lijun; Xu, Wei; Zheng, Dezhou; Liu, Jie; Zeng, Yinxiang; Lu, Xihong

doi:10.1039/c9ta08625k

Cited by 115 publications

(80 citation statements)

References 49 publications

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“…The CNMO-15 electrode maintained 95.7% of its initial specific capacity after 3000 cycles, while only 79.0% retention was kept by NMO electrode. The specific capacity of CNMO-15 increased gradually for the first 500 cycles mainly due to an activation process [46]. According to the SEM image of CNMO-15 electrode after cycling tests (Fig.…”

Section: Resultsmentioning

confidence: 93%

Oxygen vacancies-rich cobalt-doped NiMoO4 nanosheets for high energy density and stable aqueous Ni-Zn battery

et al. 2020

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The enhancement of energy density and cycling stability is in urgent need for the widespread applications of aqueous rechargeable Ni-Zn batteries. Herein, a facile strategy has been employed to construct hierarchical Co-doped Ni-MoO 4 nanosheets as the cathode for high-performance Ni-Zn battery. Benefiting from the merits of substantially improved electrical conductivity and increased concentration of oxygen vacancies, the NiMoO 4 with 15% cobalt doping (denoted as CNMO-15) displays the best capacity of 361.4 mA h g −1 at a current density of 3 A g −1 and excellent cycle stability. Moreover, the assembled CNMO-15//Zn battery delivers a satisfactory specific capacity of 270.9 mA h g −1 at 2 A g −1 and a remarkable energy density of 474.1 W h kg −1 at 3.5 kW kg −1 , together with a maximum power density of 10.3 kW kg −1 achieved at 118.8 W h kg −1 . Noticeably, there is no capacity decay with a 119.8% retention observed after 5000 cycles, demonstrating its outstanding long lifespan. This work might provide valuable inspirations for the fabrication of high-performance Ni-Zn batteries with superior energy density and impressive stability.

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Section: Resultsmentioning

confidence: 93%

Oxygen vacancies-rich cobalt-doped NiMoO4 nanosheets for high energy density and stable aqueous Ni-Zn battery

et al. 2020

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“…On the contrary, although the olivine-type materials can retain a stable host structure, however, their insufficient delivering capacities need to be further greatly improved. [85,86] Excepting the inorganic materials, the cathodes based on hybrid and organic materials also have been developed to a certain extent in recent years. [87] Among them, hybrid materials are composed on inorganic and organic components, and mainly focusing on the investigation of metal organic frameworks (MOFs) field at present stage.…”

Section: The Category Of Cathode Materialsmentioning

confidence: 99%

“…[38,74] Among them, vanadium (V)-, manganese (Mn)-, and cobalt (Co)-based materials seem to be the most promising candidates owing to their higher specific capacity or higher working voltage platform. [85,97] However, it is still difficult for them to realize a well balance of electrochemical performance in all aspects. For example, V-based cathodes have a high specific capacity, good cyclic stability but a low working voltage platform, while Mn-based cathodes show a relatively high specific capacity and operating voltage but a poor structural stability.…”

Section: The Evaluation Of Cathode Materialsmentioning

confidence: 99%

Understanding the Design Principles of Advanced Aqueous Zinc‐Ion Battery Cathodes: From Transport Kinetics to Structural Engineering, and Future Perspectives

Yong

Wang

et al. 2020

Advanced Energy Materials

267

144

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have also greatly aroused the positive exploration of alternative LIB technologies in recent years. [44] In contrast to the flammable organic electrolyte in LIBs, the aqueous one exhibits lower cost, higher safety, and especially the superior ionic conductivity, which is generally two orders of magnitude higher than that of the organic system. [9,10] All those unparalleled advantages would make the aqueous battery technologies to be the promising candidates in the future. [11] Rechargeable aqueous zinc-ion batteries (AZIBs), which is mainly composed of zinc metal anode, zinc salt-based aqueous electrolyte, and Zn 2+ host cathode, hold the great promise for energy storage applications in very recent years. [12,13] Compared with nonaqueous alkali-ion batteries, the use of cheap and high ambient stable zinc metal anode and inexpensive aqueous electrolyte with superior ionic conductivity (Figure 1a) would make such type of battery to be one of the most promising commercial candidates in the future market. [14-17] To date, extensive studies have been reported for AZIBs, and relating publications have dramatically increased especially in these two years, as shown in Figure 1b. However, the insufficient energy density seems to become the bottleneck that hinder their practical applications at current status. [4,5,18] Such issue could be ascribed to the narrow operating voltage of aqueous electrolyte, insufficient electrochemical performance of cathode materials, and Zn anode. [13,19,20] Besides, the influence of other components such as separator and collector also should be considered to some extent. [20,21] Among them, the studies of widening operating voltage of electrolyte and the optimization of other components only received less attention, which still remain at the early stage. [22,23] On the contrary, more attentions were paid to the electrochemical performance tuning of electrode materials. [24-26] Besides, considering the fixed operating voltage of Zn metal anode, the modification of cathode materials seems to provide more possibilities to effectively improve the energy density of AZIBs, owing to their rich material systems. [20,26,27] Under these considerations, the rational design of advanced cathodes is expected to be a preferential task to develop. Up to now, many types of materials have been exploited as cathode candidates and applied for AZIBs, however, those Rechargeable aqueous zinc-ion batteries (AZIBs) have attracted extensive attention and are considered to be promising energy storage devices, owing to their low cost, eco-friendliness, and high security. However, insufficient energy density has become the bottleneck for practical applications, which is greatly influenced by their cathodes and makes the exploration of high-performance cathodes still a great challenge. This review underscores the recent advances in the rational design of advanced cathodes for AZIBs. The review starts with a brief summary and evaluation of cathode material systems, as well as the introduction of proposed storage mechani...

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“…These features endow the RZBs with the most competitive candidate for powering flexible and wearable devices. In the past decades, tremendous work was devoted to distinguishing a proper cathode for RZBs, manganese‐based oxides, 11,12 vanadium‐based oxides, 13‐15 cobalt‐base oxides, 16,17 molybdenum‐based materials, 18 prussian blue analogous, 19,20 and other materials. The advances in developing those materials broke many stereotypes, realizing high capacity, high voltage platform, and long lifespan 20‐22 .…”

Section: Introductionmentioning

confidence: 99%

Dendrites issues and advances in Zn anode for aqueous rechargeable Zn‐based batteries

Zhao

et al. 2020

EcoMat

164

108

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Rechargeable Zn‐based batteries (RZBs) have attracted much attention and been regarded as one of the most promising candidates for next‐generation energy storage featured with high safety, low costs, environmental friendliness, and satisfactory energy density. The aqueous electrolyte system exhibits great potential to power the future wearable electronics. Apart from the achievements of high capacity cathode and stable electrolyte, the anode suffers from problems of dendrite growth, hydrogen evolution, and passivation with limited attention. The dendrite formation strongly restricts the battery lifespan. Therefore, strategies focused on dendrite suppression are carefully categorized and summarized in this review, including crystallographic orientation manipulation, electric field control, ion flux regulation, and mechanical shield. Each strategy and the detailed approaches are critically dissected. Finally, remaining challenges are emphasized in this review, expecting to supply further research with potential directions to fulfill the high performance of the Zn anodes.

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An ultrathin defect-rich Co₃O₄ nanosheet cathode for high-energy and durable aqueous zinc ion batteries

Abstract: A facile solvothermal reduction strategy is demonstrated to introduce oxygen defects into ultrathin Co3O4 nanosheets (R–Co3O4), which function as an advanced cathode for Zn//Co batteries.

Cited by 115 publications

References 49 publications

Oxygen vacancies-rich cobalt-doped NiMoO4 nanosheets for high energy density and stable aqueous Ni-Zn battery

Oxygen vacancies-rich cobalt-doped NiMoO4 nanosheets for high energy density and stable aqueous Ni-Zn battery

Understanding the Design Principles of Advanced Aqueous Zinc‐Ion Battery Cathodes: From Transport Kinetics to Structural Engineering, and Future Perspectives

Dendrites issues and advances in Zn anode for aqueous rechargeable Zn‐based batteries

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An ultrathin defect-rich Co3O4 nanosheet cathode for high-energy and durable aqueous zinc ion batteries

Abstract: A facile solvothermal reduction strategy is demonstrated to introduce oxygen defects into ultrathin Co3O4 nanosheets (R–Co3O4), which function as an advanced cathode for Zn//Co batteries.

Cited by 115 publications

References 49 publications

Oxygen vacancies-rich cobalt-doped NiMoO4 nanosheets for high energy density and stable aqueous Ni-Zn battery

Oxygen vacancies-rich cobalt-doped NiMoO4 nanosheets for high energy density and stable aqueous Ni-Zn battery

Understanding the Design Principles of Advanced Aqueous Zinc‐Ion Battery Cathodes: From Transport Kinetics to Structural Engineering, and Future Perspectives

Dendrites issues and advances in Zn anode for aqueous rechargeable Zn‐based batteries

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An ultrathin defect-rich Co₃O₄ nanosheet cathode for high-energy and durable aqueous zinc ion batteries