A Shape‐Variable, Low‐Temperature Liquid Metal–Conductive Polymer Aqueous Secondary Battery

Fu, Hao; Liu, Guicheng; Xiong, Lingyun; Wang, Manxiang; Lee, Jeongwoo; Ren, Ren; Yang, Woochul; Lee, Joong Kee

doi:10.1002/adfm.202107062

Cited by 19 publications

(10 citation statements)

References 79 publications

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“…Although the resistances of the two cells gradually increased with cycling, the semicircles in the high‐medium frequency region of the Zn@ZnP‐NC//MnO 2 cell were smaller than that of the Zn//MnO 2 cell, which indicated that the Zn@ZnP‐NC//MnO 2 had lower SEI film resistance and charge transfer resistance at the electrode and electrolyte interface. [ 1 , 31 ] Meanwhile, the relationship of Z ′ versus ω –1/2 in the low‐frequency region is shown in Figure S25c,d of Supporting Information. At either the 10th or the 100th cycle, the Zn@ZnP‐NC//MnO 2 cell represented lower slopes than the Zn//MnO 2 cell, which indicated its excellent Zn‐ion kinetics.…”

Section: Resultsmentioning

confidence: 99%

Regulating Dendrite‐Free Zinc Deposition by Red Phosphorous‐Derived Artificial Protective Layer for Zinc Metal Batteries

Wang

et al. 2022

Advanced Science

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Rational architecture design of the artificial protective layer on the zinc (Zn) anode surface is a promising strategy to achieve uniform Zn deposition and inhibit the uncontrolled growth of Zn dendrites. Herein, a red phosphorous‐derived artificial protective layer combined with a conductive N‐doped carbon framework is designed to achieve dendrite‐free Zn deposition. The Zn–phosphorus (ZnP) solid solution alloy artificial protective layer is formed during Zn plating. Meanwhile, the dynamic evolution mechanism of the ZnP on the Zn anode is successfully revealed. The concentration gradient of the electrolyte on the electrode surface can be redistributed by this protective layer, thereby achieving a uniform Zn‐ion flux. The fabricated Zn symmetrical battery delivers a dendrite‐free plating/stripping for 1100 h at the current density of 2.0 mA cm–2. Furthermore, aqueous Zn//MnO2 full cell exhibits a reversible capacity of 200 mAh g–1 after 350 cycles at 1.0 A g–1. This study suggests an effective solution for the suppression of Zn dendrites in Zn metal batteries, which is expected to provide a deep insight into the design of high‐performance rechargeable aqueous Zn‐ion batteries.

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Section: Resultsmentioning

confidence: 99%

Regulating Dendrite‐Free Zinc Deposition by Red Phosphorous‐Derived Artificial Protective Layer for Zinc Metal Batteries

Wang

et al. 2022

Advanced Science

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“…The XPS spectra of Sn 3d in Figure c for SFO@C-IV and Figure S9a–d for others show two main peaks at ∼487.1 and ∼495.5 eV, corresponding to Sn 3d 5/2 and Sn 3d 3/2 , mainly due to the existence of Sn(II). Meanwhile, the Sn 3d XPS peaks of SFO@C-III in Figure S9d can be deconvoluted as 486.62, 485.95, and 484.41 eV of Sn 3d 5/2 for Sn 4+ , Sn 2+ , and Sn 0 , respectively, and 495.15, 494.50, and 493.10 eV of Sn 3d 3/2 for Sn 4+ , Sn 2+ , and Sn 0 , respectively, indicating metallic Sn existing in SFO@C-III Figure d shows the C 1s XPS spectrum of SFO@C-IV; other samples are shown in Figure S10.…”

Section: Results and Discussionmentioning

confidence: 99%

“…Meanwhile, the Sn 3d XPS peaks of SFO@ C-III in Figure S9d can be deconvoluted as 486.62, 485.95, and 484.41 eV of Sn 3d 5/2 for Sn 4+ , Sn 2+ , and Sn 0 , respectively, and 495.15, 494.50, and 493.10 eV of Sn 3d 3/2 for Sn 4+ , Sn 2+ , and Sn 0 , respectively, indicating metallic Sn existing in SFO@C-III. 28 Figure 3d shows the C 1s XPS spectrum of SFO@C-IV; other samples are shown in Figure S10. The peaks at 284.80, 286.19, and 288.52 eV are related to C−C, C−O, and CO/ O−CO bonds, respectively.…”

Section: ■ Introductionmentioning

confidence: 99%

A Spinel Tin Ferrite with High Lattice-Oxygen Anchored on Graphene-like Porous Carbon Networks for Lithium-Ion Batteries with Super Cycle Stability and Ultra-fast Rate Performances

Pan

Sun

et al. 2022

ACS Appl. Mater. Interfaces

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A new type of nano-SnFe2O4 with stable lattice-oxygen and abundant surface defects anchored on ultra-thin graphene-like porous carbon networks (SFO@C) is prepared for the first time by an interesting freezing crystallization salt template method. The functional composite has excellent rate performance and long-term cycle stability for lithium-ion battery (LIB) anodes due to the stable structure, improved conductivity, and shortened migrating distance for lithium-ions, which are derived from the higher lattice-oxygen of SnFe2O4, abundant porous carbon networks and surface defects, and smaller nanoparticles. Under the ultra-high current density of 10, 15, and 20 A g–1 cycling for 1000 times, the SFO@C can provide high reversible capacities of 522.2, 362.5, and 361.1 mAh g–1, respectively. The lithium-ion storage mechanism of the composite was systematically studied for the first time by in situ X-ray diffraction (XRD), ex situ XRD and scanning electron microscopy (SEM), and density functional theory (DFT) calculations. The results indicate that the existence of Li2O and metallic Fe during the lithiation/delithiation process is a key reason for reducing the initial lithium-ion storage reversibility but increasing the rate performance and capacity stability in the subsequent cycles. DFT calculations show that lithium-ions are more easily adsorbed on the (111) crystal plane with a much lower adsorption energy of −7.61 eV than other planes, and the Fe element is the main acceptor of electrons. Moreover, the kinetics investigation indicates that the lithium-ion intercalation and deintercalation in SFO@C are mainly controlled by the pseudocapacitance behavior, which is favorable to enhancing the rate performance. The research provides a new strategy for designing LIB electrode materials with a stable structure and outstanding lithium-ion storage performance.

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“…Originating from the low interfacial tension and high permeability brought by the poloxamer surfactant, the wettability between Zn foil and Polo-ZnSO 4 is significantly enhanced (Figure S18) compared to the ZnSO 4 electrolyte, which is beneficial to reducing the contact impedance (335.4 Ω to 130.0 Ω, Figure S19 and Table S3) and enhance the electrode reaction efficiency. , Moreover, the ionic conductivity (Figure S20) shows that the addition of the poloxamer has little effect on the transport of zinc ions. As demonstrated by optical photographs (Figures a and S21) and surface SEM (Figures b and S22 ), zinc dendrites (pink line) are easily grown in ZnSO 4 electrolytes under continuous deposition of 5 mA cm –2 .…”

Section: Surface Morphology Of the Sei On The Zn Anodementioning

confidence: 99%

Poloxamer Pre-solvation Sheath Ion Encapsulation Strategy for Zinc Anode–Electrolyte Interfaces

Yang,

Fu,

Duan

et al. 2023

ACS Energy Lett.

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Aqueous metal-ion batteries are considered nextgeneration energy storage devices with improved safety. However, they suffer from sluggish kinetics and side reactions. This work presents a zinc-ion encapsulation strategy based on the poloxamer pre-solvation sheath for the realization of efficient zinc anode− electrolyte interfaces. The poloxamers can reversibly self-assemble into a pre-solvation sheath by electron-donating effect and effectively shield the ions from the surrounding water. This also lowers the activation energy of desolvation, endowing promoted transference and reaction kinetics. Accordingly, the Zn||Zn cell with the poloxamer electrolyte (Polo-ZnSO 4 ) achieved over 2000 h cycles at 5 mA cm −2 and even over 500 h cycles at 10 mA cm −2 . The Zn||MnO 2 battery delivers a high and stable capacity of 240.9 mAh g −1 after 1000 cycles at 1 A g −1 . This work paves the way for use of encapsulation chemistry for advanced aqueous metal batteries with high Coulombic efficiency and long lifetime.

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A Shape‐Variable, Low‐Temperature Liquid Metal–Conductive Polymer Aqueous Secondary Battery

Cited by 19 publications

References 79 publications

Regulating Dendrite‐Free Zinc Deposition by Red Phosphorous‐Derived Artificial Protective Layer for Zinc Metal Batteries

Regulating Dendrite‐Free Zinc Deposition by Red Phosphorous‐Derived Artificial Protective Layer for Zinc Metal Batteries

A Spinel Tin Ferrite with High Lattice-Oxygen Anchored on Graphene-like Porous Carbon Networks for Lithium-Ion Batteries with Super Cycle Stability and Ultra-fast Rate Performances

Poloxamer Pre-solvation Sheath Ion Encapsulation Strategy for Zinc Anode–Electrolyte Interfaces

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