Free-standing three-dimensional carbon nanotubes/amorphous MnO2 cathodes for aqueous zinc-ion batteries with superior rate performance

Bi, Songshan; Wu, Yizeng; Cao, Anyuan; Tian, Jin‐Lei; Zhang, Shoumin; Niu, Zhiqiang

doi:10.1016/j.mtener.2020.100548

Cited by 69 publications

(56 citation statements)

References 42 publications

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“…It is almost the most exciting electrochemical performance among the reported work as shown in Figure 4e [16,18,25,31,33,47,[58][59][60][61] and Table S4 (Supporting Information). The long-term cycling stability performance of KMO, CNT@KMO, and CNT@KMO@ GC was also evaluated.…”

Section: Resultsmentioning

confidence: 99%

“…d) The relationship between time and potential of CNT@KMO@GC-based battery at different current densities. e) The comparison of rate performance of CNT@KMO@GC-based battery with the reported aqueous ZIBs, including A: K-V 2 C@MnO 2 , [18] B: O d -K 0.27 MnO 2 , [59] C: MnO 2 /rGO, [33] D: CNT@a-MnO 2 , [60] E: O d -MnO 2 , [61] F: Na 0.23 MnO 2 , [16] G: Ca 0.28 MnO 2 , [25] H: CNF@MnO 2 , [31] I: N-CNS@MnO 2 , [47] and J: PANI-MnO 2 . [58] f) Long-term cycling stability performance of KMO-, CNT@KMO-, and CNT@KMO@GC-based batteries at 5.0 A g −1 .…”

Section: Resultsmentioning

confidence: 99%

“…4-1.34 V (near inflection point). [19,25,31,60,67,68] This phenomenon implies the diffusion of H + into KMO that results in simultaneous insertion (H x K 0.12 MnO 2 ) and conversion (MnOOH or K z MnOOH) reaction in discharge plateau (DP1) (Figure 5). [21] Along with the consumption of H + , the locally generated OH − can induce a pH-dependent conversion reaction with ZnSO 4 and H 2 O to form micrometer-scaled flake-like ZHS with 2D layered structure on its surface.…”

Section: Resultsmentioning

confidence: 99%

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Hierarchical K‐Birnessite‐MnO₂ Carbon Framework for High‐Energy‐Density and Durable Aqueous Zinc‐Ion Battery

Wang

Guan

et al. 2021

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widespread interest as promising candidate due to the advantages of high safety, good economy, and the intrinsic merits of Zn with low redox potential (−0.76 V vs standard hydrogen electrode), high theoretical capacity (820 mAh g −1 ), and energy density. [2][3][4][5][6][7][8] To fulfill the application potential of ZIBs, suitable cathode materials are highly critical to pair Zn anode. Hitherto, several types of cathode materials, such as manganese-based oxides, [9][10][11][12] vanadium-based oxides, [10,13] Prussian blue analogs, [14] and Quinone analogs, [15] have entered researchers' spotlight. The investigation yields consensus of MnO 2 as the most prevalent choice thanks to its good economy, low toxicity, high theoretical capacity, and working potential. [5,10,[16][17][18] However, the low electronic/ionic conductivity and non-negligible manganese dissolution of MnO 2 result in the inferior rate performance and fast capacity decay of MnO 2 -based cathodes, hindering the commercialization of ZIBs. [19][20][21] Great endeavors have been dedicated to improve the reaction kinetics and structural stability of MnO 2 -based cathodes in strategies of polymorphs regulation, [16,22] preintercalation, [18,[23][24][25][26][27][28] heteroatom doping, [29,30] compositing with conductive materials, [18,[31][32][33][34][35] and Mn 2+ additives of electrolyte. [9,36] All these strategies have been proven to effectively improve the electrochemical performance of MnO 2 -based cathodes in ZIBs to some extent. It is found that δ-MnO 2 (layered structure, typical with large interlayer spacing of ≈7 Å) could be more theoretically favorable for Zn 2+ insertion/extraction than their tunnel-structured counterparts (e.g., α-MnO 2 with 2 × 2 tunnels and β-MnO 2 with 1 × 1 tunnels). [5,16] Both preintercalation of guest species into MnO 2 and compositing MnO 2 with electrical conductive materials can improve its electrical conductivity, suppress manganese dissolution, and stabilize its structure. [18,21,25,28,34] Moreover, there are also considerable attempts to reveal the charge storage mechanism of aqueous mild Zn-MnO 2 batteries with the aim of further performance optimization. [5] Different energy storage mechanisms, such as Zn 2+ insertion/extraction, [35] H + /Zn 2+ coinsertion, [37] conversion reaction, [9] and dissolution/deposition, [38] have been proposed to explain certain ZIBs systems. With respect to the scientific progress, it is inferred that the significantly enhanced electrochemical performance of MnO 2 -based cathode are highly MnO 2 -based material is one of the most promising cathode candidates of aqueous zinc-ion batteries (ZIBs), but its commercialization is hindered by the sluggish reaction kinetics and poor structural stability. Herein, a hierarchical framework consisting of core-shell structured carbon nanotubes@K-birnessite-MnO 2 enwrapped by graphene/carbon black bicomponent networks (CNT@ KMO@GC) via a simple method for ZIBs is designed and developed. The hierarchical framework characterized with favorable K ...

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Hierarchical K‐Birnessite‐MnO₂ Carbon Framework for High‐Energy‐Density and Durable Aqueous Zinc‐Ion Battery

Wang

Guan

et al. 2021

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“…[ 5–9 ] In this regard, aqueous rechargeable batteries are favorable alternatives due to their intrinsic safety, cost‐effectiveness, and environmental benignity. [ 10–12 ] In particular, aqueous zinc‐ion batteries (ZIBs) have garnered intensive attention because of the high‐capacity (820 mAh g −1 ) of Zn anode, low redox potential (−0.762 V against standard hydrogen electrode), nontoxicity, and low cost of electrode materials. [ 13–16 ] To date, most of the reported cathodes for ZIBs are inorganic materials such as manganese oxides, vanadium oxides, and Prussian blue analogs, etc.…”

Section: Introductionmentioning

confidence: 99%

Poly(2,5‐Dihydroxy‐1,4‐Benzoquinonyl Sulfide) As an Efficient Cathode for High‐Performance Aqueous Zinc–Organic Batteries

Sun

Zhi

et al. 2021

Adv Funct Materials

163

134

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Aqueous rechargeable zinc‐ion batteries (ZIBs) have attracted considerable attention as a promising candidate for low‐cost and high‐safety electrochemical energy storage. However, the advancement of ZIBs is strongly hindered by the sluggish ionic diffusion and structural instability of inorganic metal oxide cathode materials during the Zn2+ insertion/extraction. To address these issues, a new organic host material, poly(2,5‐dihydroxy‐1,4‐benzoquinonyl sulfide) (PDBS), has been designed and applied for zinc ion storage due to its elastic structural factors (tunable space and soft lattice). The aqueous Zn‐organic batteries based on the PDBS cathode show outstanding cycling stability and rate capability. The coordination moieties (O and S) display the strong electron donor character during the discharging process and can act as the coordination arms to host Zn2+. Also, under the electrochemical environment, the malleable polymer structure of PDBS permits the rotation and bending of polymer chains to facilitate the insertion/extraction of Zn2+, manifesting the superiority and uniqueness of organic electrode materials in the polyvalent cation storage. Finally, quasi‐solid‐state batteries based on aqueous gel electrolyte demonstrate highly stable capacity under different bending conditions.

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“…In a recent study by Bi et al, [ 98 ] a composite film comprising amorphous α‐MnO 2 deposited on a free‐standing carbon nanotube (CNT) foam was created as a cathode material for ZIBs. This cathode exhibited excellent rate capabilities (plateaus at ≈1.40 and 1.25 V), high ion‐diffusion rate, and stable charge–discharge profiles with around 100% initial capacity retention.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in Layered Manganese and Vanadium Oxide Cathodes for Zn‐Ion Batteries

Bensalah

Luna

2021

Energy Tech

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Aqueous zinc‐ion batteries (AZIBs) are promising candidates for grid‐scale energy‐storage systems, which are essential for maintaining and distributing energy generated from various sources. In contrast to current commercial lithium‐ion batteries (LIBs), AZIBs offer advantages such as, but not limited to, high safety, low cost, and fast kinetics. Zn intercalation material serves as the key element for the suitability of Zn‐ion batteries (ZIBs) for grid and stationary applications. Different materials are tested as cathode materials for ZIBs, including manganese oxides and vanadium oxides. MnO2‐ and V2O5‐based cathodes, in particular, seem compatible with ZIBs, with the potential to perform better than existing batteries in the market. Due to the fast and facile (de)intercalation‐type storage mechanism of Zn2+ ions, layered electrode materials generally have a more stable structure during battery charge and discharge cycles. Materials with large interlayer spacing are expected to exhibit good electrochemical performance, thereby favoring hydrated and cation‐intercalated materials in the development of AZIBs cathodes. Herein, an overview is provided on the synthesis, morphology, and electrochemical performance of various MnO2‐ and V2O5‐based cathode materials in AZIB, as well as the challenges that must be overcome to reach the commercialization of AZIBs.

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Free-standing three-dimensional carbon nanotubes/amorphous MnO2 cathodes for aqueous zinc-ion batteries with superior rate performance

Cited by 69 publications

References 42 publications

Hierarchical K‐Birnessite‐MnO₂ Carbon Framework for High‐Energy‐Density and Durable Aqueous Zinc‐Ion Battery

Hierarchical K‐Birnessite‐MnO₂ Carbon Framework for High‐Energy‐Density and Durable Aqueous Zinc‐Ion Battery

Poly(2,5‐Dihydroxy‐1,4‐Benzoquinonyl Sulfide) As an Efficient Cathode for High‐Performance Aqueous Zinc–Organic Batteries

Recent Progress in Layered Manganese and Vanadium Oxide Cathodes for Zn‐Ion Batteries

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Free-standing three-dimensional carbon nanotubes/amorphous MnO2 cathodes for aqueous zinc-ion batteries with superior rate performance

Cited by 69 publications

References 42 publications

Hierarchical K‐Birnessite‐MnO2 Carbon Framework for High‐Energy‐Density and Durable Aqueous Zinc‐Ion Battery

Hierarchical K‐Birnessite‐MnO2 Carbon Framework for High‐Energy‐Density and Durable Aqueous Zinc‐Ion Battery

Poly(2,5‐Dihydroxy‐1,4‐Benzoquinonyl Sulfide) As an Efficient Cathode for High‐Performance Aqueous Zinc–Organic Batteries

Recent Progress in Layered Manganese and Vanadium Oxide Cathodes for Zn‐Ion Batteries

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Hierarchical K‐Birnessite‐MnO₂ Carbon Framework for High‐Energy‐Density and Durable Aqueous Zinc‐Ion Battery

Hierarchical K‐Birnessite‐MnO₂ Carbon Framework for High‐Energy‐Density and Durable Aqueous Zinc‐Ion Battery