Direct Self‐Assembly of MXene on Zn Anodes for Dendrite‐Free Aqueous Zinc‐Ion Batteries

Zhang, Nannan; Huang, Shuo; Yuan, Zishun; Zhu, Jiale; Zhao, Zenghua; Niu, Zhiqiang

doi:10.1002/anie.202012322

Cited by 539 publications

(445 citation statements)

References 29 publications

(4 reference statements)

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“…Nevertheless, the application of Zn‐P can lead to other challenges, including a failure mechanism that is entirely different from the widely studied Zn foil. [ 5,6 ] First, the enlarged contact area of Zn‐P poses a higher risk of corrosion and deteriorates the intrinsic instability of Zn in an aqueous solution. [ 7–9 ] The applied aqueous‐based electrolytes in RZBs have high ion conductivity, which is several orders of magnitude larger than the organic‐based electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Calendar Life of Zn Batteries Based on Zn Anode with Zn Powder/Current Collector Structure

et al. 2021

Advanced Energy Materials

131

114

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Zn foil is widely used for studying the stability and dendrite formation behavior of Zn anodes. The reported long cycling life of rechargeable Zn batteries (RZBs) is obtained by testing a battery immediately after its fabrication neglecting the aging effects. The cycling performance demonstrated cannot, however, have practical applications. Using Zn foil as both the working electrode and current collector will cause many problems when the battery is scaled up. A Zn powder (Zn‐P)/current collector configuration is more practical. In this work, the corrosion of the Zn‐P@Cu anode‐induced cell swelling is first quantitatively studied. During the aging process of the Zn‐P@Cu electrode, hydrogen forms on the surface of Cu and the Zn‐P dissolves resulting in morphological changes. These phenomena can be attributed to galvanic corrosion between Cu and Zn. To address this issue, tin with a higher overpotential for hydrogen generation is plated on Cu surface. The results indicate that hydrogen evolution is ameliorated. With a low NP ratio (mass) of 10:7, considerably better storage and cycling performance are achieved for Zn‐P@Cu//MnO2. These results highlight the need to focus on the calendar life of RZBs and corrosion of the Zn anode.

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Section: Introductionmentioning

confidence: 99%

Calendar Life of Zn Batteries Based on Zn Anode with Zn Powder/Current Collector Structure

et al. 2021

Advanced Energy Materials

131

114

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“…The Zn nucleation and deposition behaviors are closely related to the electric field distribution at the interface between the Zn anode and electrolyte. [ 8d,19a,23 ] Hence, the simulation of the electric field distribution in scale models for the CF@Zn and CF@Zn@C was carried out by Ansoft Maxwell software (Figure 2g,h). Figure 2g shows that the electric field distribution for the CF@Zn is not homogeneous with a higher charge region in the tips of the Zn protuberances.…”

Section: Resultsmentioning

confidence: 99%

“…[ 7a,8d,24 ] These protuberances gradually evolve into large and sharp dendrites (see Figure 2c), and finally pierce the separator. [ 23 ] In contrast, Figure 2h shows that the conductive carbon layer can effectively homogenize electric field distribution for the CF@Zn@C. The uniformly distributed electric field enables homogeneous Zn deposition on the entire surface of the anode, [ 8d,19a ] this results in a smooth surface after cycling (see Figure 2d) and a long lifespan of the CF@Zn@C.…”

Section: Resultsmentioning

confidence: 99%

Interface‐Engineered Dendrite‐Free Anode and Ultraconductive Cathode for Durable and High‐Rate Fiber Zn Dual‐Ion Microbattery

Zhai

Wang

Tan

et al. 2021

Adv Funct Materials

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Despite the advantages of the fiber‐shaped Zn‐ion microbattery (FZMB) in powering wearable electronics, several fundamental challenges hinder its practical application, mainly including dendrite growth on Zn anodes (leading to short cycle life) and low electrical conductivity of cathode (resulting in poor rate performance). Herein, a facile approach of sputtering a nano‐thin conductive carbon layer on Zn anode to effectively suppress dendrite growth and a dual‐conductive polymer strategy to fabricate ultraconductive core‐sheath fiber cathode (poly(3,4‐ethylenedioxythiophene)‐poly(styrene sulfonate) (PEDOT:PSS) fiber@polyaniline nanobulges) are demonstrated. The carbon layer suppresses Zn dendrites by uniformizing surface electric field and providing abundant nucleation sites. The superior conductivity of the cathode is inherited from two conductive polymers (in particular, PEDOT:PSS fibers have an ultrahigh conductivity of 3676 S cm−1) and their strong intermolecular interactions. The resulting FZMB shows excellent stability (over 100% capacity retention after 3000 cycles) and supercapacitor‐level rate performance (73% capacity retention from 0.1 to 10 A g−1). Kinetics and mechanism studies reveal that the surface‐controlled dual‐ion migration mechanism is also correlated with the high rate performance. The corresponding quasi‐solid‐state device exhibits high stability under extreme deformation conditions and superior water‐proof capability (94.6% capacity retention after 12 h underwater immersion), demonstrating great practical application potential.

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“…[254] Recently, the self-assembled Ti 3 C 2 T x layer is also used as the surface coating agent of Zn anode to achieve the dendrite-free uniform Zn plating/stripping. [255] The MOF-based material has also been attempted as a host for uniform Zn deposition. [256] The porous nature of the MOF (ZIF-8 with a sodalite topology) and presence of a trace amount of zerovalent Zn in the framework facilitate the uniform Zn stripping/plating and successfully suppress HER.…”

Section: Host For Znmentioning

confidence: 99%

Aqueous Rechargeable Zn‐ion Batteries: Strategies for Improving the Energy Storage Performance

Mallick

Raj

2021

ChemSusChem

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The growing demand for the renewable energy storage technologies stimulated the quest for efficient energy storage devices. In recent years, the rechargeable aqueous zinc-based battery technologies are emerging as a compelling alternative to the lithium-based batteries owing to safety, eco-friendliness, and cost-effectiveness. Among the zinc-based energy devices, rechargeable zinc-ion batteries (ZIBs) are drawing considerable attention. However, they are plagued with several issues, including cathode dissolution, dendrite formation, etc.. Despite several efforts in the recent past, ZIBs are still in their infant stages and have yet to reach the stage of large-scale production. Finding stable Zn 2 + intercalation cathode material with high operating voltage and long cycling stability as well as dendrite-free Zn anode is the main challenge in the develop-ment of efficient zinc-ion storage devices. This Review discusses the various strategies, in terms of the engineering of cathode, anode and electrolyte, adopted for improving the charge storage performance of ZIBs and highlights the recent ZIB technological innovations. A brief account on the history of zinc-based devices and various cathode materials tested for ZIB fabrication in the last five years are also included. The main focus of this Review is to provide a detailed account on the rational engineering of the electrodes, electrolytes, and separators for improving the charge storage performance with a future perspective to achieving high energy density and long cycling stability and large-scale production for practical application.

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Direct Self‐Assembly of MXene on Zn Anodes for Dendrite‐Free Aqueous Zinc‐Ion Batteries

Cited by 539 publications

References 29 publications

Calendar Life of Zn Batteries Based on Zn Anode with Zn Powder/Current Collector Structure

Calendar Life of Zn Batteries Based on Zn Anode with Zn Powder/Current Collector Structure

Interface‐Engineered Dendrite‐Free Anode and Ultraconductive Cathode for Durable and High‐Rate Fiber Zn Dual‐Ion Microbattery

Aqueous Rechargeable Zn‐ion Batteries: Strategies for Improving the Energy Storage Performance

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