γ-MnO2 nanorods/graphene composite as efficient cathode for advanced rechargeable aqueous zinc-ion battery

Wang, Chao; Zeng, Yinxiang; Xiao, Xiang; Wu, Shijia; Zhong, Guobin; Xu, Kaiqi; Wei, Zengfu; Su, Wei; Lu, Xihong

doi:10.1016/j.jechem.2019.08.011

Cited by 205 publications

(106 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The first cathode material proposed for ZIBs was MnO 2 , for which Zn 2+ intercalation/deintercalation is possible for repeated cycles. [ 13 ] The electrochemical properties of different MnO 2 polymorphs such as α‐, [ 14 ] β‐, [ 15 ] γ‐, [ 16 ] and δ‐MnO 2 [ 17 ] were shown to be related to complex mechanisms such as Zn 2+ and H + co‐intercalation or conversion rather than the typical intercalation of zinc ions, in which the electrochemical reduction accompanies parasitic deposition of Zn 4 (OH) 6 SO 4 ·5H 2 O onto the active materials while the precipitate is diminished such that the active material is recovered to MnO 2 on oxidation. [ 14,18 ] The disproportionation phenomenon of Mn 3+ toward Mn 2+ and Mn 4+ is another concern that occurs in acidic media.…”

Section: Introductionmentioning

confidence: 99%

New Insight on Open‐Structured Sodium Vanadium Oxide as High‐Capacity and Long Life Cathode for Zn–Ion Storage: Structure, Electrochemistry, and First‐Principles Calculation

Aniskevich

Kim

et al. 2020

Advanced Energy Materials

View full text Add to dashboard Cite

intensively investigated and developed at a global level. Among several possible energy storage and power sources, lithium-ion batteries (LIBs) have been successfully used in applications ranging from portable electronic devices to electric vehicles and large-scale energy storage systems (ESSs) owing to their high energy density. However, some critical concerns have arose regarding LIBs such as the cost of lithium resources and safety issues from mobile to ESS applications. [1-6] Thus, rechargeable divalent-ion (e.g., Zn 2+ , Mg 2+ , and Ca 2+) batteries operated in aqueous electrolytes have recently received significant attention because the use of water results in low cost, improved safety, cell fabrication in ambient environment, and reasonable environmental impact. [7-9] Furthermore, the ionic conductivity of aqueous electrolytes for rechargeable divalent-ion batteries is several-ordersof-magnitude higher than that of organic electrolytes. [7,10-12] Among divalent-ion batteries, aqueous zincion batteries (ZIBs) have been intensively investigated owing to the high gravimetric capacity (820 mAh g −1) and sufficient earth abundance of Zn metal. Moreover, the high overpotential of Herein, the promising properties of open-structured NaV 3 O 8 as a cathode material for Zn-ion batteries (ZIBs) are investigated. First-principles calculations predict the insertion of Zn 2+ (0.74 Å) in NaV 3 O 8 with an interlayer distance of ≈7 Å, enabling delivery of a high discharge capacity of 353 mAh g −1 at 70 mA g −1 (0.2 C) for 300 cycles in the operating window of 0.3−1.5 V in 1 m Zn(CF 3 SO 3) 2 aqueous solution. Operando synchrotron X-ray diffraction, X-ray absorption near edge structure spectroscopy, and first-principles calculations validate the insertion of Zn 2+ into the NaV 3 O 8 structure within the operation range. Moreover, operando synchrotron X-ray diffraction and operando Raman spectroscopy reveal the formation of layered zinc hydroxytriflate (Zn 5 (OH) 8 (CF 3 SO 3) 2 •xH 2 O) as a side reaction below 0.8 V on discharge (reduction) and its dissolution into the electrolyte above 0.8 V on charge (oxidation). The formation of the Zn hydroxytriflate interfacial layer increases the charge-transfer activation energy from 15.5 to 48 kJ mol −1 , leading to kinetics fade below 0.8 V. The findings reveal the charge-storage mechanism for NaV 3 O 8 , which may also be applicable to other vanadate cathodes, providing new insights for the investigation and design of ZIBs.

show abstract

Section: Introductionmentioning

confidence: 99%

New Insight on Open‐Structured Sodium Vanadium Oxide as High‐Capacity and Long Life Cathode for Zn–Ion Storage: Structure, Electrochemistry, and First‐Principles Calculation

Aniskevich

Kim

et al. 2020

Advanced Energy Materials

View full text Add to dashboard Cite

show abstract

“…Moreover, the ionic radius of Zn 2+ (0.74 Å) is smaller than that of Na + (1.02 Å) and close to that of Li + (0.69 Å) (Kundu et al, 2016;Zhang et al, 2017), making AZIBs a promising candidate for future energy storage devices. Actually, various suitable and advanced cathode materials such as MnO 2 polymorphs [e.g., α- , β- (Liu et al, 2019), γ- (Wang et al, 2020), and δ- (Nam et al, 2019)], vanadium-based oxides (Kundu et al, 2016;Soundharrajan et al, 2018), Prussian blue analogs (Zhang et al, 2015;Yang et al, 2019), and organic compounds (Guo et al, 2018;Tie et al, 2020) have been extensively explored.…”

Section: Introductionmentioning

confidence: 99%

Hybridizing δ-Type MnO2 With Lignin-Derived Porous Carbon as a Stable Cathode Material for Aqueous Zn–MnO2 Batteries

et al. 2020

View full text Add to dashboard Cite

With the advantages of intrinsic safety, low price, high output potential, and acceptable energy density, aqueous rechargeable Zn-MnO 2 batteries are gradually emerging as promising energy storage devices in recent years. Unfortunately, the structural instability and poor electrical conductivity of manganese dioxides still hinder their further applications. To tackle these issues, we demonstrate a high-performance cathode material for Zn-MnO 2 batteries by hybridizing lignin-derived porous carbon with δ-MnO 2 (denoted as LPC/δ-MnO 2). Benefiting from the high electrical conductivity of porous carbon, the LPC/δ-MnO 2 cathode material can offer high discharge capacity of 332.3 mAh g −1 at 0.2 A g −1 and excellent high-rate capability (196.1 mAh g −1 at 5 A g −1). Meanwhile, the assembled Zn-MnO 2 battery displays good long-term cycling stability (82% capacity retention after 1000 cycles). Such superior performances are attributed to the synergetic effect of nanostructured δ-MnO 2 and porous carbon scaffold, which is in favor of rapid Zn 2+ ion diffusion and large contribution ratio of pseudocapacitive Zn 2+ ion intercalation. The results of this study show great prospects of hybridizing biomass-derived carbon framework with electrochemically active materials toward advanced energy storage materials.

show abstract

“…In addition, Mn-based oxides (γ-MnO 2 ), [112] TMDs (MoS 2 , [80] Na 0.14 TiS 2 , [61] VS 2 [81] ), and other materials such as MoO 3 [79] also have been proved to be the electroactive hosts for Zn 2+ insertion/extraction. Besides that, owing to the open framework structure, PIBs materials such as CoFe(CN) 6 , [73] CuFe(CN) 6 , [113] and NiFe(CN) 6 , [114] as well as the NASICON-type phosphates materials such as Na 3 V 2 (PO 4 ) 3 , [115] Na 3 V 2 (PO 4 ) 2 F 3 , [116] and LiFePO 4 , [82] also have been demonstrated to be allowed for the fast Zn 2+ diffusion through the 3D pathways.…”

Section: Zn 2+ Insertion/extraction Mechanismmentioning

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

243

144

View full text Add to dashboard Cite

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...

show abstract

γ-MnO2 nanorods/graphene composite as efficient cathode for advanced rechargeable aqueous zinc-ion battery

Cited by 205 publications

References 49 publications

New Insight on Open‐Structured Sodium Vanadium Oxide as High‐Capacity and Long Life Cathode for Zn–Ion Storage: Structure, Electrochemistry, and First‐Principles Calculation

New Insight on Open‐Structured Sodium Vanadium Oxide as High‐Capacity and Long Life Cathode for Zn–Ion Storage: Structure, Electrochemistry, and First‐Principles Calculation

Hybridizing δ-Type MnO2 With Lignin-Derived Porous Carbon as a Stable Cathode Material for Aqueous Zn–MnO2 Batteries

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

Contact Info

Product

Resources

About