Conversion‐Type Nonmetal Elemental Tellurium Anode with High Utilization for Mild/Alkaline Zinc Batteries

Chen, Ze; Li, Chuan; Yang, Qi; Wang, Donghong; Li, Xinliang; Huang, Zhaodong; Liang, Guojin; Chen, Ao; Chen, Zhi

doi:10.1002/adma.202105426

Cited by 67 publications

(38 citation statements)

References 49 publications

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“…[1][2][3][4] Despite these merits, the typical Zn-metal anode in AZIBs still suffers from certain inevitable problems, such as unwanted Zn dendrites, uncontrollable self-corrosion, and stubborn gas evolution, which cause poor cycling stability, large charge overpotential, and low coulombic efficiency. [5][6][7] In the past few years, several strategies have been proposed to address these issues. It has been reported that constructing a protective layer covering Zn electrodes or modifying the surface of Znmetal, as well as developing new additives for aqueous electrolytes, can partially suppress Zn dendrite growth in AZIBs.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Engineering of Sulfur Vacancies and Heterointerfaces in Copper Sulfide Anodes for Aqueous Zn‐Ion Batteries with Fast Diffusion Kinetics and an Ultralong Lifespan

Liu

Zhang

Liang

et al. 2022

Advanced Energy Materials

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Aqueous Zn‐ion batteries (AZIBs) are promising candidates for implementing large‐scale energy storage, but the adverse side reactions and unsatisfactory cycle life brought by Zn‐metal anodes limit their potential in applications. Herein, an ingenious synthesized CuS1–x@polyaniline (PANI) is proposed as an attractive conversion‐type Zn‐metal‐free anode for AZIBs, in which appropriate S‐vacancies and PANI heterointerfaces can be simultaneously constructed. This “killing three birds with one stone” strategy stabilizes the anode structure by utilizing organic–inorganic heterointerfaces and enhances Zn2+ storage, benefiting from abundant S‐vacancies, as well as initiating fast Zn2+ transport kinetics based on the joint effect of the two. Operando X‐ray absorption fine structure and synchrotron X‐ray diffraction further reveal the highly reversible conversion reaction of CuS1–x@PANI via a distinct crystallization–amorphous transformation mechanism. These features endow CuS1–x@PANI with sufficient zinc‐ion storage capacity (215 mA h g−1 at 100 mA g−1) and reliable current abuse tolerance (154.3 mA h g−1 at 1 A g−1 after 1000 cycles). Moreover, when matched with the optimized ZnxMnO2 cathode, the full battery achieves a record‐high cycling performance of 10 000 cycles (80% capacity retention) at a superhigh current density of 10 A g−1. This study provides new opportunities for developing high‐performance rocking‐chair AZIBs.

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Section: Introductionmentioning

confidence: 99%

Synergistic Engineering of Sulfur Vacancies and Heterointerfaces in Copper Sulfide Anodes for Aqueous Zn‐Ion Batteries with Fast Diffusion Kinetics and an Ultralong Lifespan

Liu

Zhang

Liang

et al. 2022

Advanced Energy Materials

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“…During the discharge process, the obvious peak shift of Te 3d can be detected, indicating a continuous conversion happens when the Mg∥Te battery was discharged. Specifically, the Te 3d 5/2 peak at 573.8 eV (initial), denoted as Te 0 , migrates to 573.3 eV (1.1 V) then to 573.1 eV (0.9 and 0.4 V) in the discharge process, resulting from the conversion from Te 0 to Te 2 2– and Te 2– . , The peaks located at around 577 eV can be attributed to the tellurium oxide, which mainly result from the oxidation of active materials during the XPS test . In addition, the ex situ XPS also confirms the reversibility of the Mg∥Te system, in which the peak of Te 3d 5/2 shifts back during the charge process (Figure e).…”

Section: Resultsmentioning

confidence: 58%

Tellurium: A High-Performance Cathode for Magnesium Ion Batteries Based on a Conversion Mechanism

et al. 2022

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Magnesium ion batteries (MIBs), due to the low redox potential of Mg, high theoretical capacity, dendrite-free magnesiation, and safe nature, have been recognized as a post-lithium energy storage system. However, an ongoing challenge, sluggish Mg2+ kinetics in the small number of available cathode materials of MIBs, restricts its further development. The existing cathodes mostly deliver unsatisfactory capacity with poor cycling life based on the traditional ion-intercalation mechanism. Herein, we fabricated a conversion-type Mg∥Te battery based on a reversible two-step conversion reaction (Te to MgTe2 to MgTe). High discharge capacities (387 mAh g–1) and rate capability (165 mAh g–1 at 5 A g–1) can be achieved. The diffusivity of Mg2+ can reach 3.54 × 10–8 cm2 s–1, enabled by the high electrical conductivity of Te and increased surface conversion sites. Subsequently, ab initio molecular dynamics simulation was also carried out to further confirm the conversion mechanism and fast Mg2+ transportation kinetics.

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“…Compared to pure metal supports, zincophilic and chemically stable alloy seeds with non-galvanic corrosion, tunable elemental components, and low nucleation barrier have been considered as promising Zn anode supports, and examples include zinc-silver (Zn-Ag), zinc-tellurium (Zn-Te), zinc-tin (Zn-Sn), zinc-copper (Zn-Cu), and zinc-aluminum (Zn-Al) alloys. [65][66][67][68][69][70][71] Some metals such as Ag, Te, and Sn can "in situ" alloy with metallic Zn during the initial Zn plating and then serve as a support that further provides the Zn 2+ ions deposit sites. For example, Xue et al constructed a Ag nanoparticlecovered carbon cloth to realize reversible and dendrite-free Zn anodes for ZIBs (Figure 5A).…”

Section: Metal Supportsmentioning

confidence: 99%

Surface and Interface Engineering of Zn Anodes in Aqueous Rechargeable Zn‐Ion Batteries

Zheng

Huang

Ming

et al. 2022

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Rechargeable zinc-ion batteries (ZIBs) have shown great potential as an alternative to lithium-ion batteries. The ZIBs utilize Zn metal as the anode, which possesses many advantages such as low cost, high safety, eco-friendliness, and high capacity. However, on the other hand, the Zn anode also suffers from many issues, including dendritic growth, corrosion, and passivation. These issues are largely related to the surface and interface properties of the Zn anode. Many efforts have therefore been devoted to the modification of the Zn anode, aiming to eliminate the above-mentioned problems. This review gives a comprehensive summary on the mechanism behind these issues as well as the recent progress on Zn anode modification with focus on the strategies of surface and interface engineering, covering the design and application of both the Zn anode supports and surface protective layers, along with abundant examples. In addition, the promising research directions and perspective on these strategies are also presented.

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Conversion‐Type Nonmetal Elemental Tellurium Anode with High Utilization for Mild/Alkaline Zinc Batteries

Cited by 67 publications

References 49 publications

Synergistic Engineering of Sulfur Vacancies and Heterointerfaces in Copper Sulfide Anodes for Aqueous Zn‐Ion Batteries with Fast Diffusion Kinetics and an Ultralong Lifespan

Synergistic Engineering of Sulfur Vacancies and Heterointerfaces in Copper Sulfide Anodes for Aqueous Zn‐Ion Batteries with Fast Diffusion Kinetics and an Ultralong Lifespan

Tellurium: A High-Performance Cathode for Magnesium Ion Batteries Based on a Conversion Mechanism

Surface and Interface Engineering of Zn Anodes in Aqueous Rechargeable Zn‐Ion Batteries

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