High-energy-density battery systems have been critical to applications in consumer electronics, aviation, electric vehicles, and emerging large-scale stationary storage. Here, we report a solid-electrolyte-based liquid Li-S and Li-Se (SELL-S and SELL-Se in short) battery system with the potential to deliver energy density exceeding 500 Wh kg À1 and 1,000 Wh L À1 , together with the ability of low cost and stable electrochemical performance for future concentrated and largescale storage applications.

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and colloid electrolyte, [8] which, to some extent, can alleviate the corresponding problem to realize improved stripping/ plating cycles. [9] However, achieving dense metallic deposition for long cycle life and high rate performance of Zn metal batteries remains a great challenge.Detrimental dendrites inevitably appear on pure metal anodes since their formation is favorable in thermodynamics. [10] From the perspective of crystallography, the local disordered metal dendrite growth is highly related to the polycrystalline nature of metal crystals. [11] For example, metallic lithium aligns with the Li (110) crystal plane and forms a circular dendrite morphology. [12] For aqueous Zn-ion batteries, the Zn (100) and Zn (101) crystal planes on the pure Zn anode grow faster, which leads to typical flaky Zn dendrites with low density. [13] Similarly, dendrite formation also occurs in other metal battery chemistries, which contributes to inferior electrochemical performance and the limited cycle life of the batteries.Theoretically, by covering preferred-orientation conductive crystal planes on a metal surface, dendrite-free metal anodes are expected to be achieved. [12b-14] Experience has shown that the preferred-orientation conductive crystal plane should be parallel the basal plane. For example, for the Zn (002) crystal plane, the more exposed to Zn foil, the better the battery performance. [15] However, the life of batteries with more Zn (002) plane-exposed anodes is still unsatisfactory because Zn foils have a polycrystal texture with as many as 20 kinds of crystal plane orientations. A feasible solution is to use coatings with a strong texture to promote vertical (002) crystal plane growth, such as graphene, [13,16] whose basal planes are parallel the electrode surface. The deposition of Zn on graphene exhibits epitaxial growth layer by layer owing to the low lattice mismatch between horizontal graphene and Zn (002).Nevertheless, it isn't easy to tailor a desirable coating to realize this mechanism for homogeneous Zn deposition. A good coating layer may require 1) good electronic conduction to provide electronic for deposition reaction that Zn 2+ + 2e -→ Zn; 2) even electric field for uniform Zn growth at an early stage; 3) vertical crystal planes with a quantity advantage to achieve high lattice matching with Zn (002); and 4) good affinity with Zn 2+ . Exploring desirable coatings favors the development of dendrite-free Zn anodes.This work investigated the lattice regulation mechanism based on vertical crystal plane matching between AgZn 3 (002) Metallic zinc anodes in zinc-ion batteries suffer from problematic Zn dendrite chemistry. Previous works have shown that preferred-orientation crystal planes can help dendrite-free metal anodes. This work reports a nanothickness (≈570 nm) AgZn 3 coating to regulate the Zn growth. First, AgZn 3 @Zn anode avoids the problem, in Ag@Zn anode, that the rate of electrochemical Ag-Zn alloying is slower than that of Zn dendrites growth. Batteries life increased from 112 h (pure Z...

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