Microstructure-tuned cobalt oxide electrodes for high-performance Zn–Co batteries

Shang, Wenxu; Yu, Wentao; Xu, Xiao; Ma, Yanyi; Cheng, Chun Hu; Dai, Yawen; Tan, Peng; Ni, Meng

doi:10.1016/j.electacta.2020.136535

Cited by 29 publications

(46 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[57] However, Co 3 O 4 cathode faces the challenge of its inherent poor electrical conductivity and insufficient active sites, which leads to limited capacity and poor cycle performance when the depth of discharge is shallow. [57,58] In order to further improve the conductivity and capacity of Co 3 O 4 , strategies such as compounding with foamed Ni, [57] introducing oxygen defects, [59] and tuning the microstructure [60] 7a. [57] It exhibited a high discharge voltage of 1.78 V and 162 mAh g −1 at 1 A g −1 , and presented outstanding cycling with a capacity retention of 80% after 2000 full cycles.…”

Section: Co Oxidesmentioning

confidence: 99%

“…[59] As shown in Figure 7c, the adsorption Recently, Tan et al found that among nanosheet, nanowire, and nanoplate structures, nanowire exhibit the highest discharge capacity. [60] Meanwhile, optimizing the microstructure can promote ion transport and improve electrical conductivity. Therefore, by adjusting the critical factors in the preparation (heat treatment temperature, hydrothermal time, and composition), a heterogeneous porous nanowire Co 3 O 4 cathode with rational loading was prepared by Tan et al, which presented an optimal capacity of 230.0 mAh g −1 at 0.5 A g −1 and a significant rate capability (144.0 mAh g −1 at 10 A g −1 ).…”

Section: Co Oxidesmentioning

confidence: 99%

“…The main problems include structural variation or distortion, [22,41,103] material decomposition and dissolution, [43b] poor electrical conductivity, [19,58] and slow Zn 2+ reaction kinetics, [52] declining the capacity. Several strategies have been proposed to solve these problems, including special structure/composition design, [19,23] introduction of defects, [59] optimized microstructure, [60] electrolyte additives, [67] etc. In addition, high-voltage scanning, [34] elemental doping, [56,61,62,79] and the introduction of inductive ions [19,42,45] are also proposed to improve the discharge voltage of the cathode.…”

Section: Summary and Future Outlookmentioning

confidence: 99%

See 2 more Smart Citations

High‐Voltage Zinc‐Ion Batteries: Design Strategies and Challenges

Yan

Ang

Yang

et al. 2021

Adv Funct Materials

162

View full text Add to dashboard Cite

(1 of 30)additionally, it leads to reliable and manageable energy delivery. [2] Lithium-ion batteries (LIBs) have been the first choice for EES owing to their remarkable energy density, excellent cycle life, and small volume compared to other rechargeable batteries since they were successfully sold by SONY in 1991. [3] Nevertheless, their widespread applications have been limited due to sterile Li resources, high cost, toxic electrolytes, safety problems, and other disadvantages. [4] To date, environmentally friendly aqueous batteries using multi-valent charge carriers, such as Zn 2+ , Mg 2+ , and Al 3+ , have attracted attention because multiple electrons are involved in the redox reactions during intercalation, as well as higher capacity and energy density can be achieved. However, only a few cathode materials are available for Mg 2+ diffusion, and the passivation of Mg anode greatly restricts the further transport of Mg 2+ ions. Al battery anode also forms a protective oxide (Al 2 O 3 ) film in the aqueous electrolyte, which affects the battery performance. Hence, Mg and Al batteries are under investigation and are still a long way from practical application and commercialization. [5] ZIBs have attracted interest in grid-scale energy storage compared to other energy storage technologies owing to the following advantages: 1) ZIBs can be easily manufactured in an open-air environment, so the total cost of manufacturing ZIBs is much lower than other batteries (Li + /Na + /K + -ion) which require an inert environment for production. [6] 2) The price of Zn (0.5−1.5 $/lb) is much lower than that of Li (8−11 $/lb), and the reserves of Zn (79 ppm) are approximately four times than those of Li (17ppm). [7] 3) Zn as an anode exhibits a high theoretical volumetric (5855 mAh cm −3 ) and gravimetric capacity (820 mAh g −1 ), low electrochemical potential of −0.762 V versus the standard hydrogen electrode (SHE), and two-electron transfer during redox reaction, contributing to a high-energy density. [8] 4) ZIBs are highly safe, not only because Zn anode is non-toxic and stable in the general environment, but also because a majority of ZIBs electrolytes used are aqueous with higher ionic conductivity (10 −1 −6 S cm −1 ) than flammable and toxic organic solvents (10 −3 −10 −2 S cm −1 ). [9] Furthermore, the normal Zn salts (ZnSO 4

show abstract

Section: Co Oxidesmentioning

confidence: 99%

Section: Co Oxidesmentioning

confidence: 99%

Section: Summary and Future Outlookmentioning

confidence: 99%

See 1 more Smart Citation

High‐Voltage Zinc‐Ion Batteries: Design Strategies and Challenges

Yan

Ang

Yang

et al. 2021

Adv Funct Materials

162

View full text Add to dashboard Cite

show abstract

“…To figure out these issues, plenty of efforts have been made to exploit various Co 3 O 4 ‐based nanostructures as cathodes since nanostructured materials can exhibit a higher surface area and more abundant active sites as well as shorter electron/ion transport pathways than the bulk one. So far, varieties of Co 3 O 4 nanostructures such as nano cluster, nanowire, nanosheet and 3D hierarchical structures [ 144,149,152–154 ] have been synthesized and delivered good electrochemical performance. For example, uniform Co 3 O 4 nanosheets were grown on Ni foam via a facile electrodeposition method and exhibited a mesoporous structure (Figure 2A).…”

Section: Co3o4‐based Cathode Materialsmentioning

confidence: 99%

“…[ 140–143 ] For example, Shang et al. [ 144 ] prepared porous nanowire Co 3 O 4 structures, which was assembled with Zn plate to form a Zn‐Co batteries, exhibiting a 230 mAh g −1 specific capacity at 0.5 A g −1 . Shang et al.…”

Section: Introductionmentioning

confidence: 99%

Recent progress and challenges of co‐based compound for aqueous Zn battery

Gao

Yin

2021

Nano Select

View full text Add to dashboard Cite

Aqueous Zn battery turns to be a rational approach for next‐generation energy storage devices due to the high abundance, admirable theoretical capacity and excellent safety. As an emerging candidate of the ideal cathode material for Zn battery, Co‐based compounds have drawn increasing attentions because of the high output voltage, remarkable theoretical capacity and excellent redox property. In this review, a summary of recent developments of Co‐based cathodes in aqueous Zn batteries is presented, including Co3O4, Co(OH)2, NiCo2O4 and other Co‐based compounds. In addition to charge storage mechanisms, smart strategies including structural modulation, composition regulation, and defect engineering are systematically introduced, and their structure‐performance relationships are discussed in depth. Finally, limitations and proposed future work are demonstrated.

show abstract

Ni (II) Coordination Supramolecular Grids for Aqueous Nickel‐Zinc Battery Cathodes

Zhang

Zhou

et al. 2021

Adv Funct Materials

View full text Add to dashboard Cite

Aqueous rechargeable nickel‐zinc batteries (NZBs) have the advantages of economical cost and reliable safety. Despite reports of success in achieving high‐utilization and stable Zn anodes, the practical application of NZBs has been plagued by the restrictive capacity density and degradation of the Ni‐based cathode. Herein, it is reported that nickel‐ligand coordination grids (NCGs) with a high theoretical capacity of 128.12 mAh g−1 offer a fast faradic reaction while maintaining good reversibility due to the abundant open metal sites and flexible network structures. In situ and ex situ characterizations demonstrate that the graphene nanosheet (GN) modification of NCGs supramolecular substantially boosts surface charge and reducing the work function of supramolecular compounds. A Ni//Zn battery using such a graphene organic‐inorganic material (G‐NCGs) achieve a high gravimetric capacity of 113.8 mAh g−1 at 0.5 A g−1 with 50% of its initial capacitance retained after 2000 cycles and an exceptional rate capacity of 43.3 mAh g−1 even at the current density of 5.0 A g−1.

show abstract

Microstructure-tuned cobalt oxide electrodes for high-performance Zn–Co batteries

Cited by 29 publications

References 65 publications

High‐Voltage Zinc‐Ion Batteries: Design Strategies and Challenges

High‐Voltage Zinc‐Ion Batteries: Design Strategies and Challenges

Recent progress and challenges of co‐based compound for aqueous Zn battery

Ni (II) Coordination Supramolecular Grids for Aqueous Nickel‐Zinc Battery Cathodes

Contact Info

Product

Resources

About