Design Strategies for High‐Energy‐Density Aqueous Zinc Batteries

Ruan, Pengchao; Liang, Shuquan; Lu, Bingan; Fan, Hong Jin; Zhou, Jiang

doi:10.1002/anie.202200598

Cited by 530 publications

(278 citation statements)

References 126 publications

Supporting

Mentioning

278

Contrasting

Order By: Relevance

“…Although the ionic radius of Zn 2+ (0.75 Å) is smaller than that of K + (1.38 Å), the higher charge density would induce structural degradation upon repeated Zn 2+ (de)intercalation. [ 48 ] Owing to its stable layered structure, large interlayer spacing, and abundant oxygen vacancies, the zinc storage performance of the KNVO cathode is also explored. Three pairs of redox peaks matched with GCD profiles in CV curves suggest the multistep redox reactions during Zn 2+ (de)intercalation (Figure S26, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Synergetic Effect of Alkali‐Site Substitution and Oxygen Vacancy Boosting Vanadate Cathode for Super‐Stable Potassium and Zinc Storage

Zhao

Liang

Shi

et al. 2022

Adv Funct Materials

Self Cite

View full text Add to dashboard Cite

Layer‐structured metal vanadates have attracted extensive attention as cathode materials due to multi‐electron redox reactions and versatile cations storage capability. Nevertheless, their actual promotion is still hindered by the sluggish reaction kinetics and inferior phase transition upon repeated cations (de)intercalation. Here, large‐sized NH4+ is introduced into the K‐site of K0.43(NH4)0.12V2O5–δ to enable more kinetically favorable oxygen vacancies. The reinforced structure ensures complete solid‐solution phase transition and buffers the dramatic structural change upon potassium storage. The stable presence of NH4+ as pillars during cycling is also confirmed. Meanwhile, the oxygen vacancies induced by alkali‐site substitution can facilitate ion diffusion and enhance the electronic conductivity, as further demonstrated by theoretical calculations. Therefore, it exhibits a high capacity of 117.8 mA g−1 at 20 mA g−1 with smooth profiles and superior capacity retention of 92.5% after 800 cycles at 1000 mA g−1. Such an effective synergetic strategy also promotes its zinc storage capability, which performs negligible self‐discharge behavior and retains a reversible capacity of 216.8 mAh g−1 after 3000 cycles at 10 A g−1. This synergetic strategy may provide novel perspectives to develop layer‐structured cathode and facilitate its practical application in energy storage devices.

show abstract

Section: Resultsmentioning

confidence: 99%

Synergetic Effect of Alkali‐Site Substitution and Oxygen Vacancy Boosting Vanadate Cathode for Super‐Stable Potassium and Zinc Storage

Zhao

Liang

Shi

et al. 2022

Adv Funct Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…Unfortunately, most commercial AZBs suffer from poor rechargeability, which can be explained by the chemical behavior of Zn in alkaline electrolyte. Specifically, in alkaline medium, Zn metal is first oxidized to Zn 2+ and then reacts with OHions to form Zn(OH) 4 2-. These zincate ions will precipitate in the forms of ZnO once reaching their solubility limit.…”

Section: Zn Anode Reactionsmentioning

confidence: 99%

Methods for Rational Design of Advanced Zn‐Based Batteries

et al. 2022

View full text Add to dashboard Cite

Rechargeable aqueous zinc-based batteries (AZBs) have received massive attention as promising contenders for the future large-scale energy storage due to their low cost, inherent safety, and abundant resources. However, the insufficient energy density and poor stability have become the key to hinder their further application. As is well known, the energy densities (E, Wh kg −1 ) of AZBs are determined by the specific capacity (mAh g −1 ) and output voltage (V). Given the fixed redox potential and capacity of the Zn metal anode, the energy density of AZBs is mainly determined by the cathode material, and the rich material systems of the cathode provide more possibilities to this field. Meanwhile, the methods to improve the stability and performance of the Zn anodes have gained more and more attention due to the severe Zn dendrite growth that can pierce the separator and lead to short-circuiting of the cell. Therefore, in this review, we comprehensively summarize the rational design methods in optimizing the cathode, anode, and device architecture, and classic examples of each catalogue are discussed in details as well. Last, the issues and outlook for further development of high performance AZBs are also presented.

show abstract

“…[8] Accordingly, the exploitation of cathode materials featuring high capacity and high voltage has been imperative for high-performance zinc batteries. [9] Fortunately, a MnO 2 /Mn 2 + conversion reaction mechanism with excellent performance had been proposed and employed in various batteries equipped with acidic electrolyte (covering Zn//MnO 2 , Cu//MnO 2 and Pb//MnO 2 batteries, etc. ), opening up a new filed for high-energy-density zinc batteries.…”

Section: Introductionmentioning

confidence: 99%

Promoting Reversible Dissolution/Deposition of MnO₂ for High‐Energy‐Density Zinc Batteries via Enhancing Cut‐Off Voltage

Ruan

Dong

et al. 2022

ChemSusChem

Self Cite

View full text Add to dashboard Cite

Zn//MnO2 batteries based on the MnO2/Mn2+ conversion reaction mechanism featuring high energy density, safety, and affordable cost are promising in large‐scale energy storage application. Nonetheless, the continuous H+ intercalation at low potential reduces the average output voltage and the energy efficiency, impeding the development of the high‐performance zinc battery. In this work, a strategy was proposed of enhancing the cut‐off voltage from the perspective of electrochemical parameters, toward high energy efficiency and stable output voltage of the Zn//MnO2 battery. This strategy was beneficial to promoting MnO2 dissolution/deposition through the increase of acidity caused by the constant accumulation of MnO2 and inhibiting H+ (de)intercalation during cycling process, thereby improving the energy efficiency (83.5 %) along with the stable average output voltage (1.88 V) under the cut‐off voltage of 1.8 V. This work provides a new pathway to promote aqueous zinc batteries with high energy density and stable output voltage.

show abstract

Design Strategies for High‐Energy‐Density Aqueous Zinc Batteries

Cited by 530 publications

References 126 publications

Synergetic Effect of Alkali‐Site Substitution and Oxygen Vacancy Boosting Vanadate Cathode for Super‐Stable Potassium and Zinc Storage

Synergetic Effect of Alkali‐Site Substitution and Oxygen Vacancy Boosting Vanadate Cathode for Super‐Stable Potassium and Zinc Storage

Methods for Rational Design of Advanced Zn‐Based Batteries

Promoting Reversible Dissolution/Deposition of MnO₂ for High‐Energy‐Density Zinc Batteries via Enhancing Cut‐Off Voltage

Contact Info

Product

Resources

About

Design Strategies for High‐Energy‐Density Aqueous Zinc Batteries

Cited by 530 publications

References 126 publications

Synergetic Effect of Alkali‐Site Substitution and Oxygen Vacancy Boosting Vanadate Cathode for Super‐Stable Potassium and Zinc Storage

Synergetic Effect of Alkali‐Site Substitution and Oxygen Vacancy Boosting Vanadate Cathode for Super‐Stable Potassium and Zinc Storage

Methods for Rational Design of Advanced Zn‐Based Batteries

Promoting Reversible Dissolution/Deposition of MnO2 for High‐Energy‐Density Zinc Batteries via Enhancing Cut‐Off Voltage

Contact Info

Product

Resources

About

Promoting Reversible Dissolution/Deposition of MnO₂ for High‐Energy‐Density Zinc Batteries via Enhancing Cut‐Off Voltage