High‐Voltage Rechargeable Alkali–Acid Zn–PbO<sub>2</sub> Hybrid Battery

Xu, Yunpeng; Cai, Pingwei; Chen, Kai; Ding, Yichun; Chen, Long; Chen, Weifan; Wen, Zhenhai

doi:10.1002/anie.202012017

Cited by 59 publications

(36 citation statements)

References 37 publications

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“…The bottleneck for such an electrochemical device with nonmental ion storage is the thermal stability window of 1.23 V, which greatly limits the energy density that is directly related to the working voltage according to the equation ( E = C sp V , where E is the energy density, C sp presents the specific capacity, and V is the working voltage). , Hybrid electrochemical devices by coupling acidic cathode with alkaline anode were reported to be capable of broadening the voltage window of aqueous battery, − which inspire us to accomplish the idea to develop a dual-nonmetal ion H + /OH – battery. We herein report a surface engineering and defect manufacturing route for the fabrication of a defect-rich MoO 3 porous nanobelt (d-MoO 3 PNB), which holds abundant oxygen defects and enlarged surface area, leading to more exposed active sites and improved electrical conductivity, allowing faster kinetics for H + insertion/deinsertion.…”

Section: Introductionmentioning

confidence: 99%

Defect-Rich MoO₃ Nanobelt Cathode for a High-Performance Hybrid Alkali/Acid Zn-MoO₃ Rechargeable Battery

Cai

Chen

Ding

et al. 2021

ACS Sustainable Chem. Eng.

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Protons (H+) and hydroxide ions (OH–) are regarded as ideal charge carriers for rechargeable batteries thanks to their small size, high ion mobility, low cost, and wide flexibility compared to the metal ions. However, the implementation of storage of both H+ and OH– in one electrochemical energy device faces grand challenges due to incompatibility between H+ and OH–. Herein, we report an alkali-acid Zn-MoO3 hybrid battery that employs H+ and OH– as charge carriers of the cathode and anode, respectively, in which the insertion/deinsertion of H+ take place on the defect-rich MoO3 porous nanobelt (d-MoO3 PNB) cathode in acid while OH– are involved in the alkaline conversion of Zn anode, which offers a promising route to better address the incompatible issues of H+ and OH– in one system. The d-MoO3 PNB with abundant oxygen vacancies holds more favorable properties for H+ storage than the MoO3 NB, as verified by the fact that the former can deliver significantly enhanced capacity and robust stability relative to the latter. The density functional theory (DFT) calculations demonstrate that the d-MoO3 can lower the barrier for H+ storage with improved conductivity, which is beneficial for improving the electrochemical performance. As a result, the alkali-acid Zn-MoO3 hybrid battery can deliver a high open-circuit voltage of 1.85 V, a high rate capability of 158 mAh g–1 at a current density of 5 A g–1, and excellent capacity retention of above 90% over 200 cycles. This work sheds light on the development of aqueous energy devices with high voltage and energy density through materials engineering and device optimization.

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Section: Introductionmentioning

confidence: 99%

Defect-Rich MoO₃ Nanobelt Cathode for a High-Performance Hybrid Alkali/Acid Zn-MoO₃ Rechargeable Battery

Cai

Chen

Ding

et al. 2021

ACS Sustainable Chem. Eng.

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“…The Cu j j PbO 2 cells exhibit a pair of obvious redox peaks at 1.24/1.60 V (Figure 5b), which is attributed to a one-step conversion reaction of PbO 2 . [14] Furthermore, after the first cycle, the cyclic voltammetry (CV) curves overlap well, indicating the highly reversible electrochemical behaviors. Besides, owing to the high electrode potential of PbO 2 /PbSO 4 redox couple, the Cu j j PbO 2 cells deliver a high and flat discharge voltage at � 1.27 V, as shown in the GCD curves (Figure 5c).…”

Section: Methodsmentioning

confidence: 98%

A Lattice‐Matching Strategy for Highly Reversible Copper‐Metal Anodes in Aqueous Batteries

Cai

Wang

et al. 2022

Angewandte Chemie

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Copper metal is an attractive anode material for aqueous rechargeable batteries due to its high theoretical specific capacity (844 mAh g À 1 ), good environmental compatibility and high earth abundance. However, the Cu anodes often suffer from poor deposition/stripping reversibility and nonuniform deposition during the charge/discharge process, degrading the lifetime of aqueous Cu-metal batteries. Herein, a latticematching strategy was developed to design high-performance Cu-metal anodes. In such a strategy, Ni substrates that exhibit high lattice matching with Cu were selected to support the Cu anodes. The high lattice matching endows Cu anodes with high deposition/ stripping reversibility, low nucleation overpotential as well as a uniform and dense electrodeposition on Ni substrates. Based on the Ni substrate-supported Cu anodes, the full cells paired with lead dioxide cathodes show a stable cycling behavior. This work provides a route for the design of high-performance Cu electrodes in aqueous rechargeable batteries.

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“…[87] Copyright 2020, Wiley-VCH. ) electrolyte can be also operated in the range of 1.4 to 2.2 V, with the average discharge voltage of 1.7 V. A PbO 2 //Zn battery with alkali-acid presented an outstanding V OC (3.09 V) and an operating voltage of 2.95 V. [90] Qiao et al also used a similar hybrid electrolyte to expand the ESW (≈3.4 V). [91] Furthermore, research on the design of organic-aqueous hybrid electrolytes to improve the operating voltage of Li batteries and prevented Li metal from reacting with water have also been proposed; [92] however, there is no application of this type of electrolyte in ZIBs.…”

Section: Decoupling Electrolytesmentioning

confidence: 99%

“…Wang et al. also designed and prepared a newfangled KMnO 4 //Zn battery based on the acidic (1 m H 2 SO 4 )‐alkaline (2 m KOH +2 m LiOH) double electrolyte, showing an operating voltage of 2.8 V. [ 89 ] Moreover, a MnO 2 //Zn battery using alkaline(1 m NaOH and 0.01 m Zn(OAc) 2 )‐mild (2 m ZnSO 4 + 0.1 m MnSO 4 ) electrolyte can be also operated in the range of 1.4 to 2.2 V, with the average discharge voltage of 1.7 V. A PbO 2 //Zn battery with alkali‐acid presented an outstanding V OC (3.09 V) and an operating voltage of 2.95 V. [ 90 ] Qiao et al. also used a similar hybrid electrolyte to expand the ESW (≈3.4 V).…”

Section: Electrolytes For More Reliable High‐voltage Zibsmentioning

confidence: 99%

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

Yan

Ang

Yang

et al. 2021

Adv Funct Materials

163

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(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

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High‐Voltage Rechargeable Alkali–Acid Zn–PbO₂ Hybrid Battery

Cited by 59 publications

References 37 publications

Defect-Rich MoO₃ Nanobelt Cathode for a High-Performance Hybrid Alkali/Acid Zn-MoO₃ Rechargeable Battery

Defect-Rich MoO₃ Nanobelt Cathode for a High-Performance Hybrid Alkali/Acid Zn-MoO₃ Rechargeable Battery

A Lattice‐Matching Strategy for Highly Reversible Copper‐Metal Anodes in Aqueous Batteries

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

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High‐Voltage Rechargeable Alkali–Acid Zn–PbO2 Hybrid Battery

Cited by 59 publications

References 37 publications

Defect-Rich MoO3 Nanobelt Cathode for a High-Performance Hybrid Alkali/Acid Zn-MoO3 Rechargeable Battery

Defect-Rich MoO3 Nanobelt Cathode for a High-Performance Hybrid Alkali/Acid Zn-MoO3 Rechargeable Battery

A Lattice‐Matching Strategy for Highly Reversible Copper‐Metal Anodes in Aqueous Batteries

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

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Product

Resources

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High‐Voltage Rechargeable Alkali–Acid Zn–PbO₂ Hybrid Battery

Defect-Rich MoO₃ Nanobelt Cathode for a High-Performance Hybrid Alkali/Acid Zn-MoO₃ Rechargeable Battery

Defect-Rich MoO₃ Nanobelt Cathode for a High-Performance Hybrid Alkali/Acid Zn-MoO₃ Rechargeable Battery