ORCID Profile
0009-0000-6160-8931
Current Organisation
University of Texas at Arlington
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Publisher: Elsevier BV
Date: 06-2023
Publisher: Wiley
Date: 22-12-2022
Abstract: The applications of alloy‐type anode materials for Na‐ion batteries are always obstructed by enormous volume variation upon cycles. Here, K + ions are introduced as an electrolyte additive to improve the electrochemical performance via electrostatic shielding, using Sn microparticles (μ‐Sn) as a model. Theoretical calculations and experimental results indicate that K + ions are not incorporated in the electrode, but accumulate on some sites. This accumulation slows down the local sodiation at the “hot spots”, promotes the uniform sodiation and enhances the electrode stability. Therefore, the electrode maintains a high specific capacity of 565 mAh g −1 after 3000 cycles at 2 A g −1 , much better than the case without K + . The electrode also remains an areal capacity of ≈3.5 mAh cm −2 after 100 cycles. This method does not involve time‐consuming preparation, sophisticated instruments and expensive reagents, exhibiting the promising potential for other anode materials.
Publisher: Wiley
Date: 03-08-2022
Abstract: Lithium‐sulfur batteries hold great potential for next‐generation energy storage systems, due to their high theoretical energy density and the natural abundance of sulfur. Although much progress has been achieved recently, the low actual energy density of LiS batteries is still the key challenge in implementing their practical applications. Because the energy density greatly depends on the areal capacity of their sulfur cathodes, the sulfur content and sulfur loading play an important role in meeting the conditions necessary for practical applications. Therefore, escalating the areal capacity of sulfur cathodes is essential to promote LiS technology from laboratory‐scale devices to industrial (or commercial) systems. In this review, the recent progress in high sulfur loading of LiS batteries ( mg cm −2 ) is highlighted from various aspects, including sulfur hosts, binders, separators, and interlayers. In particular, sulfur hosts derived from carbon, polymer, transition metal oxide/ sulfide, metal‐organic framework, and other novel materials, which can promote high sulfur loading, are discussed in detail. Moreover, unique free‐standing structures and configurational innovation of separators and interlayers are overviewed. Based on the current achievements, future efforts for developing high‐loading LiS batteries are proposed to pave the way for their commercial applications.
Publisher: Wiley
Date: 17-06-2023
Abstract: Aqueous Zn‐ion batteries (AZIBs) have attracted much attention due to their excellent safety, cost‐effectiveness, and eco‐friendliness thereby being considered as one of the most promising candidates for large‐scale energy storage. Zn metal anodes with a high gravimetric/volumetric capacity are indispensable for advanced AZIBs. However, pristine Zn metal anodes encounter severe challenges in achieving adequate cycling stability, including dendrite growth, hydrogen evolution reaction, self‐corrosion, and by‐product formation. Because all these reactions are closely related to the electrolyte/Zn interface, the subtle interface engineering is important. Many strategies targeted to the interface engineering have been developed. In this review, a timely update on these strategies and perspectives are summarized, especially focusing on the controllable synthesis of Zn, Zn surface engineering, electrolyte formulation, and separator design. Furthermore, the corresponding internal principles of these strategies are clarified, which is helpful to help seek for new strategies. Finally, the challenges and perspectives for the future development of practical AZIBs are discussed, including the conducting of in advanced in situ testing, unification of battery models, some boundary issues, etc. This review is expected to guide the future development and provi beacon light direction for aqueous zinc ion batteries.
No related grants have been discovered for Chuanhao Nie.