A Highly Reversible Zn Anode with Intrinsically Safe Organic Electrolyte for Long‐Cycle‐Life Batteries

Naveed, Ahmad; Yang, Huijun; Shao, Yuyan; Yang, Jun; Nuli, Yanna; Li, Jun; Shi, Siqi; Zhang, Liwen; Ye, Anjiang; He, Bing; Wang, Jiulin

doi:10.1002/adma.201900668

Cited by 285 publications

(188 citation statements)

References 38 publications

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“…As for Ni, it was reported that the presence of Ni compounds is detrimental to the anode/electrolyte interface because of its catalytic activity . Furthermore, the interface between the aqueous electrolyte and anode is unstable owing to the serious interfacial reactions . Therefore, an increased concentration of Ni on an Al anode is believed to accelerate the deterioration of the interface between the aqueous electrolyte and the Al foil, and accordingly the capacity decay during long cycling.…”

Section: Resultsmentioning

confidence: 99%

“…[25] Furthermore, the interface between the aqueous electrolyte and anode is unstableo wing to the seriousi nterfacialr eactions. [26] Therefore, ani ncreased concentration of Ni on an Al anode is believed to accelerate the deteriorationo f the interface between the aqueous electrolyte and the Al foil, and accordingly the capacity decay during long cycling. We also used ex situ XPS to determine the status of Ni on the Al foil during the electrochemical process.…”

Section: Resultsmentioning

confidence: 99%

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The Compensation Effect Mechanism of Fe–Ni Mixed Prussian Blue Analogues in Aqueous Rechargeable Aluminum‐Ion Batteries

et al. 2020

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An aluminum‐ion battery was assembled with potassium nickel hexacyanoferrate (KNHCF) as a cathode and Al foil as an anode in aqueous electrolyte for the first time, based on Al3+ intercalation and deintercalation. A combination of ex situ XRD, X‐ray photoelectron spectroscopy (XPS), galvanostatic intermittent titration technique (GITT), and differential capacity analysis was used to unveil the crystal structure changes and the insertion/extraction mechanism of Al3+. Al3+ could reversibly insert/extract into/from KNHCF nanoparticles through a single‐phase reaction with reduction/oxidation of Fe and Ni. Over long‐term cycling, it was Fe rather than Ni that contributed to more capacity owing to the dissolution of Ni from the KNHCF structure, which could be expressed as a compensation effect of mixed redox centers in KNHCF. KNHCF delivered an initial discharge capacity of 46.5 mAh g−1. The capacity decay could be attributed to the unstable interface between Al foil and the aqueous electrolyte owing to the catalytic activity of the Ni transferring from Ni dissolution of KNHCF to the Al foil anode, rather than KNHCF structure collapse; KNHCF maintained its 3 D framework structure for 500 cycles. This work is expected to inspire more exhaustive investigations of the mechanisms that occur in aluminum‐ion batteries.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

The Compensation Effect Mechanism of Fe–Ni Mixed Prussian Blue Analogues in Aqueous Rechargeable Aluminum‐Ion Batteries

et al. 2020

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“…The electrolyte optimization positively influences the performance of Zn anode by forming a smooth absorbed layer or decreasing the active of H 2 O in the electrolyte, leading to the dendrite‐free anode and guaranteeing the long cycle life of battery. Wang's group developed trimethyl phosphate/triethyl phosphate‐based electrolytes, which enabled the dendrite‐free Zn deposition with high Coulombic efficiency (CE) (>99%) and controllable Zn morphologies 33,34. Due to the limit space, the recent progress of Zn anode is suggested to be found in the review reports 24,41.…”

Section: Introductionmentioning

confidence: 99%

Highly Reversible Zn Anode Enabled by Controllable Formation of Nucleation Sites for Zn‐Based Batteries

Liang

Liu

et al. 2020

Adv Funct Materials

593

425

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Aqueous Zn batteries have drawn tremendous attention for their several advantages. However, the challenges of Zn anodes such as the corrosion and ZnO densification have compromised their application in rechargeable Zn‐based batteries. In this paper, a straightforward strategy is employed to facilitate the uniform Zn stripping/plating of the Zn anode through using a ZrO2 coating layer, which contributes to the controllable nucleation sites for Zn2+ and fast Zn2+ transportation through the favorable Maxwell–Wagner polarization. As a result, the low polarization (24 mV at 0.25 mA cm−2), high Coulombic efficiency (99.36% at 20 mA cm−2), and long cycle life (over 3800 h at 0.25 mA cm−2) can be obtained for the ZrO2‐coated Zn anode. It is believed that the ZrO2 coating layer can also act as an inert physical barrier to decrease the contact of the anode and electrolyte, thus reducing both the Zn corrosion and formation of ZnO densification, and then improve the reversibility of Zn anode. The results demonstrated in this work provide an appealing strategy for the future development of rechargeable Zn‐based batteries.

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“…To overcome this problem, several strategies have been used, that is, redesigning the anode, [ 2,14 ] composite formation or anode surface modifications, [ 15 ] reformulating electrolytes with additives, and the use of solid‐state electrolytes. [ 3,16,17 ] Uniform charge distribution on the anode surface is essential for eliminating this problem.…”

Section: Introductionmentioning

confidence: 99%

Metal‐Organic Framework Integrated Anodes for Aqueous Zinc‐Ion Batteries

Yüksel

Büyükçakır

Seong

et al. 2020

Advanced Energy Materials

401

221

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decreases the cost because it eliminates the necessity of having an inert atmosphere or using organic solvents. Thus, Zn-based energy storage systems such as Zn-ion, [5,6] Zn-alkali, [2,7] Zn-flow, [8] Zn-I 2 , [9] Zn-air, [10] and Zn-ion capacitors [11,12] have received attention because of their practicality and good performance. The easy and scalable production of Zn electrodes is crucial for securing the continued development of improved Zn-based battery systems, but recent research has highlighted the problem of dendrite formation caused by non-uniform charge distribution and side reactions (hydrogen evolution, Zn corrosion) during plating and stripping which causes severe deterioration of Zn batteries, and significantly limits their efficiency and life. Because of dendrite growth, such devices suffer from a short cycle life, capacity fade, and a high possibility of internal short circuit formation and safety problems. Dendrite growth is not only a challenging problem for Zn batteries but is also a problem for Li-metal batteries, and suppression of dendrite formation in anodes is a great challenge for battery research. [13] Although there is a considerable effort to suppress dendrite formation, it still remains the most crucial problem for batteries. To overcome this problem, several strategies have been used, that is, redesigning the anode, [2,14] composite formation or anode surface modifications, [15] reformulating electrolytes with additives, and the use of solid-state electrolytes. [3,16,17] Uniform charge distribution on the anode surface is essential for eliminating this problem.ZIF-8, one of the zeolitic imidazole frameworks (a subgroup of the metal-organic frameworks [MOFs]), has a Zn-coordinated crystal structure and high microporosity. [12,18] The use of ZIF-8-derived carbon nanoparticles as a host for electrodeposited Zn has been reported in the literature. [9] We reasoned that a monolithic (conformal) ZIF-8 layer that is directly grown on Zn metal might be a unique strategy to ensure a uniform charge and ion distribution at the anode-electrolyte interface. MOF-integrated Zn anodes might facilitate reversible Zn plating and stripping cycles, and prevent dendrite formation and side reactions. It is also possible that pyrolyzed MOF-integrated Zn anodes might have a similar mechanism and electrochemical properties due to their N-content, porosity, and hydrophilicity.Here, we report the design and construction of novel MOFbased Zn anodes to achieve the above-mentioned goals for Znbased energy storage systems. The surface of a bare Zn foil was selectively oxidized and MOFs were directly grown on it by a wet chemistry method. The resulting anodes were used Zinc-based batteries have a high capacity and are safe, cost-effective, environmentally-friendly, and capable of scalable production. However, dendrite formation and poor reversibility hinder their performance. Metal-organic framework (MOF)-based Zn anodes are made by wet chemistry to address these issues. These MOF-based anodes exhibit high effi...

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A Highly Reversible Zn Anode with Intrinsically Safe Organic Electrolyte for Long‐Cycle‐Life Batteries

Cited by 285 publications

References 38 publications

The Compensation Effect Mechanism of Fe–Ni Mixed Prussian Blue Analogues in Aqueous Rechargeable Aluminum‐Ion Batteries

The Compensation Effect Mechanism of Fe–Ni Mixed Prussian Blue Analogues in Aqueous Rechargeable Aluminum‐Ion Batteries

Highly Reversible Zn Anode Enabled by Controllable Formation of Nucleation Sites for Zn‐Based Batteries

Metal‐Organic Framework Integrated Anodes for Aqueous Zinc‐Ion Batteries

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