Simultaneous Cationic and Anionic Redox Reactions Mechanism Enabling High‐Rate Long‐Life Aqueous Zinc‐Ion Battery

Fang, Guozhao; Liang, Shuquan; Chen, Zixian; Cui, Peixin; Zheng, Xusheng; Lu, Bingan; Lu, Xihong

doi:10.1002/adfm.201905267

Cited by 153 publications

(130 citation statements)

References 61 publications

Supporting

Mentioning

125

Contrasting

Unclassified

Order By: Relevance

“…Since the Zn(CF 3 SO 3 ) 2 salt has bulky anions, the highly concentrated Zn(CF 3 SO 3 ) 2 electrolyte may reduce solvation effect. [52][53][54][55] Another strategy is to use water-in-salt electrolyte, which was shown to improve capacity retention in ZIBs. [56] Therefore, it is anticipated to improve Zn 2+ ion transfer and long-term cyclability in Zn cells.…”

Section: Resultsmentioning

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: Resultsmentioning

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

“…[1][2][3][4][5][6][7][8] Thus, ZIBs are deemed as one of the most promising configurations for grid-scale energy storage. [9][10][11][12][13][14][15][16][17][18][19] Among the cathodes of ZIB, layered cation-intercalated vanadate materials are exceptional candidates due to their multiple oxidation states, tunable intercalation species, and interlayer spacing, thus have been widely investigated. [20][21][22][23][24][25][26][27] However, these vanadates readily suffer from degradation/structural collapse probably by forming insulating precipitates even in mild acidic/near-neutral electrolytes, which greatly impedes their electrochemical and cycling performance.…”

Section: Introductionmentioning

confidence: 99%

Anisotropic Growth of Al‐Intercalated Vanadate by Tuning Surface Hydrophilicity for High‐Rate Zn‐Ion Storage

Ming

Lei

et al. 2020

Small Structures

View full text Add to dashboard Cite

Aqueous zinc‐ion battery (ZIB) cathodes with high rate performance are still lacking due to the sluggish kinetics of Zn2+ insertion. Herein, preferential 2D spreading surface is constructed on conductive carbon paper (C‐paper) supports by disclosing hierarchical porous structures. The unique surface hydrophilicity enables anisotropic growth of layered Al‐intercalated vanadate nanobelts with high‐aspect ratios. As a cathode of ZIB, the preintercalated vanadate nanobelts with a large interlayer spacing (1.38 nm) exhibit high specific capacities and excellent rate performance (534 and 221 mA h g−1 at 1 and 20 A g−1, respectively). Moreover, chemically resistant HfO2 layers are applied by atomic layer deposition to prevent effectively the cathode from degradation, leading to an outstanding cycling stability (88% retention at 1000 cycle). The anisotropic growth of 2D electrode materials by tuning the surface hydrophilicity provides an effective pathway for designing improved electrode materials for various energy storage technologies.

show abstract

“…Similar to LIBs, transition-metal oxides [Mn-based materials (Zhang H. et al, 2020 ; Zhang M. et al, 2020 ), V-based materials (Fang et al, 2019 ; Zhang L. et al, 2020 ), and Mo-based materials (He et al, 2019 )], Prussian blue analogs (Trocoli and La Mantia, 2015 ), and organic materials (Zhang H. et al, 2020 ) are attractive cathode-material candidates in ZIBs, particularly manganese dioxide (MnO 2 ), owing to its low cost and low toxicity. MnO 2 exists in various crystallographic polymorphs, i.e., the α-, β-, γ-, δ-, λ-, and ε-phase, which are composed of MnO 6 octahedral units, where each Mn 4+ cation is coordinated by six oxygen atoms (Song et al, 2018 ; Han et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Contribution of Cation Addition to MnO2 Nanosheets on Stable Co3O4 Nanowires for Aqueous Zinc-Ion Battery

et al. 2020

View full text Add to dashboard Cite

Zinc-based electrochemistry attracts significant attention for practical energy storage owing to its uniqueness in terms of low cost and high safety. In this work, we propose a 2.0-V high-voltage Zn–MnO 2 battery with core@shell Co 3 O 4 @MnO 2 on carbon cloth as a cathode, an optimized aqueous ZnSO 4 electrolyte with Mn 2+ additive, and a Zn metal anode. Benefitting from the architecture engineering of growing Co 3 O 4 nanorods on carbon cloth and subsequently deposited MnO 2 on Co 3 O 4 with a two-step hydrothermal method, the binder-free zinc-ion battery delivers a high power of 2384.7 W kg −1 , a high capacity of 245.6 mAh g −1 at 0.5 A g −1 , and a high energy density of 212.8 Wh kg −1 . It is found that the Mn 2+ cations are in situ converted to Mn 3 O 4 during electrochemical operations followed by a phase transition into electroactive MnO 2 in our battery system. The charge-storage mechanism of the MnO 2 -based cathode is Zn 2+ /Zn and H + insertion/extraction. This work shines light on designing multivalent cation-based battery devices with high output voltage, safety, and remarkable electrochemical performances.

show abstract

Simultaneous Cationic and Anionic Redox Reactions Mechanism Enabling High‐Rate Long‐Life Aqueous Zinc‐Ion Battery

Cited by 153 publications

References 61 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

Anisotropic Growth of Al‐Intercalated Vanadate by Tuning Surface Hydrophilicity for High‐Rate Zn‐Ion Storage

Contribution of Cation Addition to MnO2 Nanosheets on Stable Co3O4 Nanowires for Aqueous Zinc-Ion Battery

Contact Info

Product

Resources

About