The development and application of aqueous zinc-ion batteries still face some obstacles, such as dendrite growth and side reactions triggered by active water. Here, we constructed PVA@SR-ZnMoO4 multifunctional coating on...

Multifunctional SEI-like structure coating stabilizing Zn anode at large current and capacity

Recent years have witnessed the renaissance of aqueous Zn-ion batteries (AZIBs). Nevertheless, current development of high-performance AZIBs is confronted by rapid capacity decay and irreversible cycling of Zn anodes, whose...

Emerging strategies for steering orientational deposition toward high-performance Zn metal anodes

Aqueous zinc‐ion batteries (ZIBs) enjoy a good reputation for being safe, affordable to produce, and ecologically friendly due to the use of water‐based electrolytes. The main factors restricting the development of ZIBs, however, are the negative effects of dendrite deposition on the zinc anode and the dissolution of common cathodes such as Mn and V‐based cathodes. Various techniques have been used to address these issues, including regulating the electrolyte concentration or solvation structure, developing a coating or current collector to lessen anode dendrite growth, and improving the structural stability of the cathode. Recently, functionalized separator strategies have gained popularity as effective ways to improve ZIB performance. The use of a functionalized separator is also a practical technique to save costs and increase the volumetric energy density of the battery by substituting a functionalized separator for the usual thick and expensive glass fiber separator. The development of functionalized separators in ZIBs is the subject of ongoing research, and this work presents the most recent findings in a systematic manner, focusing on both the effects and the methods to prepare or modify them. Finally, a brief explanation of the constraints and future potential of current functionalized separator development is provided.

https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/aenm.202300403

Functionalized Separator Strategies toward Advanced Aqueous Zinc‐Ion Batteries

Aqueous zinc-metal batteries are considered to have the potential for energy storage due to their high safety and low cost. However, the practical applications of zinc batteries are limited by dendrite growth and side reactions. Epitaxial growth is considered an effective method for stabilizing Zn anode, especially for manipulating the (002) plane of deposited zinc. However, (002) texture zinc is difficult to achieve stable cycle at high capacity due to its large lattice distortion and uneven electric field distribution. Here, we construct a novel zinc anode with highly (101) texture (denoted as (101)-Zn). Due to unique directional guidance and strong bonding effect, (101)-Zn can achieve dense vertical electroepitaxy in near-neutral electrolytes. In addition, the low grain boundary area inhibits the occurrence of side reactions. The resultant (101)-Zn symmetric cells exhibit excellent stability over 5300 h (4 mA cm-2 for 2 mAh cm-2 ) and 330 h (15 mA cm-2 for 10 mAh cm-2 ). Meanwhile, the cycle life of Zn//MnO2 full cell is meaningfully improved over 1000 cycles. This article is protected by copyright. All rights reserved.

Construct Robust Epitaxial Growth of (101) Textured Zinc Metal Anode for Long Life and High Capacity in Mild Aqueous Zinc-Ion Batteries.

Aqueous zinc-ion batteries have attracted extensive attention ascribing to affordability, intrinsic safety, and environmental benignity, which have revealed ideal alternative to lithium-ion batteries for large-scale energy storage systems. Nevertheless, the design of aqueous zinc-ion batteries is plagued by obstacles, such as dissolution of cathode materials, dendrites and side reactions of anode, and electrolyte consumption as compared to commercial lithium-ion batteries. In this regard, from the perspective of predominant issues encountered with aqueous zinc-ion batteries, this comprehensive review aims to systematically summarize the design principles and optimization strategies associated with the cathode, anode, electrolyte, and separator. Meanwhile, the impact of design strategies on electrochemistry, and the relationship between issues and strategies are revealed for guiding the rational design of advanced aqueous zinc-ion batteries. Eventually, a series of critical challenges, constructive solutions, and future trends toward cathode, anode, electrolyte and separator are dedicatedly proposed. We envisage that this review would endow researchers a readily accessible means to rapidly acquaint with optimization strategies and design principles for advanced aqueous zinc-ion batteries. 

Optimization Strategies Toward Advanced Aqueous Zinc-ion Batteries: From Facing Key Issues to Viable Solutions

Rechargeable aqueous zinc-ion batteries have emerged as potential alternatives to lithium-ion batteries in grid energy storage due to their intrinsic safety, economy, and high capacity of zinc anode. Unfortunately, dendrite growth, limited reversibility, and corrosion of metal zinc anodes in aqueous systems seriously hamper the application of zinc-ion batteries. Herein, ultrathin and high-toughness membranes composed of eco-friendly biomass nanofibers are constructed for substituting glass-fiber separators in rechargeable zinc-ion batteries. The presence of this robust biomass membrane lowers separator thickness to 9 μm, which can prevent the pierce of zinc dendrite, manipulate crystallographic orientation during zinc deposition, and improve the anti-corrosion property of zinc. Thus, this robust biomass membrane enables excellent electrochemical performance and sheds light on a multifunctional design for improving metal zinc anode performance from separators beyond zinc itself. 

Ultrathin and super-tough membrane for anti-dendrite separator in aqueous zinc-ion batteries

It has always been a goal to realize high efficiency and broadband emission in the single-component materials. The appearance of metal halide perovskites makes it possible. Their soft lattice characteristics and significant electron-phonon coupling synergistically generate the self-trapped excitons (STEs), contributing to the broadband emission with a large Stokes shift. Meanwhile, their structural/compositional diversity provides suitable active sites and coordination environments for ns2 ions doping, allowing 3 Pn (n = 0, 1, 2) →1 S0 transitions toward the broadband emission. The ns2 ions emission is phenomenologically similar to that of the STE emission, preventing people from in-depth understanding their emission origin, thus failure to meeting the design requirements to serve the various sectors of practical applications. In this scenario, we deploy this review by summarizing the fundamentals and development of such two emission mechanisms, to establish a clear and comprehensive understanding of the broadband emission phenomenon, which may pave the way to an ideal customization of broadband-emission metal halide perovskites. This article is protected by copyright. All rights reserved.

Broadband Emission Origin in Metal Halide Perovskites: Are Self-Trapped Excitons or Ions?

Interaction Between the Glymphatic System and α-Synuclein in Parkinson’s Disease

Characteristics analysis of drought at multiple spatiotemporal scale and assessment of CMIP6 performance over the Huaihe River Basin

Vision-and-Language Navigation (VLN) is a task designed to enable embodied agents carry out natural language instructions in realistic environments. Most VLN tasks, however, are guided by an elaborate set of instructions that is depicted step-by-step. This approach deviates from real-world problems in which humans only describe the object and its surroundings and allow the robot to ask for help when required. Vision-based Navigation with Language-based Assistance (VNLA) is a recently proposed task that requires an agent to navigate and find a target object according to a high-level language instruction. Due to the lack of step-by-step navigation guidance, the key to VNLA is to conduct goal-oriented exploration. In this paper, we design an Attention-based Knowledge-enabled Cross-modality Reasoning with Assistant’s Help (AKCR-AH) model to address the unique challenges of this task. AKCR-AH learns a generalized navigation strategy from three new perspectives: (1) external commonsense knowledge is incorporated into visual relational reasoning, so as to take proper action at each viewpoint by learning the internal–external correlations among object- and room-entities; (2) a simulated human assistant is introduced in the environment, who provides direct intervention assistance when required; (3) a memory-based Transformer architecture is adopted as the policy framework to make full use of the history clues stored in memory tokens for exploration. Extensive experiments demonstrate the effectiveness of our method compared with other baselines.

/pdf/incorporating-external-knowledge-reasoning-for-vision-and-3o90x8jh.pdf

Incorporating External Knowledge Reasoning for Vision-and-Language Navigation with Assistant’s Help

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