November 16, 2022,Researcher Zhang Yu and Associate Professor Liu Dapeng of Beihang UniversityPublished an updated review of zinc-based batteries entitled “Recent advances and perspectives for Zn-based batteries: Zn anode and electrolyte”.
Zinc-based batteries haveSafe and reliable, abundant resources, environmentally friendly and low costand other advantages, taking into account bothHigh theoretical energy densityIt is a new type of energy storage battery with great development potential. However, because the aqueous electrolyte can cause a series of side reactions, including:Dendrite growth of zinc anode during cycling, deformation of zinc electrode, hydrogen evolution corrosion and continuous consumption of electrolyte, etc., so that the actual performance of zinc-based batteries is unsatisfactory, for exampleShort cycle life, low coulomb efficiency, and severe capacity attenuation, greatly hindered the development and application of zinc-based batteries.
In this review, the authors describe the operation of zinc anodesBasic principle, the mechanism of side reaction generation and itsInteraction relationships, focusing on the effectiveness of inhibiting the occurrence of side reactionstactics, and systematically lists the electrochemical performance of zinc-based batteries by different methods of zinc anode and electrolyte modificationLifting effect。 First, the paper introduces it from three aspectsZinc anode optimization method, including growth control, interface regulation and structural design, so as to uniformize ion concentration and electric field strength, to achieve the purpose of uniform nucleation and growth of zinc.Electrolyte modificationBased on the three aspects of aqueous electrolyte, ionic liquid and solid electrolyte, the basic characteristics of different types of electrolytes, the problems and optimization strategies arising in the exploration and research are summarized. Finally, the use of zinc-based batteries in large-scale energy storage is exploredChallengesand look forward to the future research direction of zinc-based batteries.
Figure 1: Strategies for implementing high-performance zinc-based batteries, including Zn anode and electrolyte modification.
Figure 2: (a) Schematic diagram of epitaxial metal electrodeposition; (b) Voltage distribution curve of the whole battery; (c) Schematic diagram of the eutectic strategy of zinc-aluminum alloy to suppress dendrite and crack.
Figure 3: (a) Schematic diagram of zinc anode stripping/deposition behavior; (b) Schematic diagram of synchronous restoration assembly of MXene layer on zinc foil; (c) SEM characterization of zinc anodes after cycling.
Figure 4: (a) LSV curves of Zn and Zn@In negative electrodes and HER free energy diagrams of Zn(101) and In(101) surfaces; (b) The binding energy of different faces of the Zn atom; (c) Voltage capacity diagram of Zn and 100Al2O3@Zn electrodes; (d) In situ light microscopic photographs of zinc deposition on bare zinc and ZnSe@Zn electrodes.
Figure 5: (a) Schematic diagram of zinc deposition of bare zinc and PA coating loading; (b) Transport mechanism of zinc ions on NFZP composite coatings; (c) Zn/ex-ZrP structure.
Figure 6: (a) Charging schematic of Ni-Zn and Ni-3D Zn; (b) Zn nucleation voltage-time curves and Zn nucleation overpotential of bare CC and CNT electrodes; (c) Schematic diagram of Zn deposition of CM@CuO and CM.
Figure 7: (a) Contact angle at the LFP electrode/electrolyte interface with and without additives; (b) Schematic diagram of the inhibition effect of electrolyte dendrite without any additives and Arg+ added; (c) At different water concentrations[EMIm]Raman spectra of C-C and C=O for 1 M Zn(OAc)2 in OAc.
Related paper information:
H. Ge, X. Feng, D. Liu, et al. Recent advances and perspectives for Zn-based batteries: Zn anode and electrolyte. Nano Research Energy 2023, 2: e9120039 https://doi.org/10.26599/NRE.2023.9120039.
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