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Using 3D host is an effective way to solve the dendrite growth problem and accommodate volume changes of lithium (Li) metal anode. However, the preferred Li deposition on the top surface leads to the Li metal agglomeration at the surface. In addition, the large weight of the 3D host also greatly decreases the capacity based on the whole anode. Herein, a bidirectional lithiophilic gradient modification,...
Lithium (Li) metal batteries (LMBs) face huge challenges to achieve long cycling life at wide temperature range owing to the severe dendrite growth at subambient temperature and the intense side reactions with electrolyte at high temperature. Herein, an ultrathin LiBO2 layer with an extremely high Young's modulus of 8.0 GPa is constructed on Li anode via an in situ reaction between Li metal and 4,4,5,5‐tetramethyl‐1,3,2‐dioxa‐borolane...
Constructing a stable solid electrolyte interphase (SEI) on high‐specific‐capacity silicon (Si) anode is one of the most effective methods to reduce the crack of SEI and improve the cycling performance of Si anode. Herein, the authors construct a reinforced and gradient SEI on Si nanoparticles by an in‐situ thiol‐ene click reaction. Mercaptopropyl trimethoxysilane (MPTMS) with thiol functional groups...
Catalysis is an effective remedy for the fast capacity decay of lithium‐sulfur batteries induced by the shuttling of lithium polysulfides (LiPSs), but too strong adsorption ability of many catalysts toward LiPSs increases the risk of catalyst passivation and restricts the diffusion of LiPSs for conversion. Herein, perovskite bimetallic hydroxide (CoSn(OH)6) nanocages are prepared, which are further...
Lithium (Li) metal is promising for high energy density batteries due to its low electrochemical potential (−3.04 V) and high specific capacity (3860 mAh g−1). However, the safety issues impede the commercialization of Li anode batteries. In this work, research of hierarchical structure designs for Li anodes to suppress Li dendrite growth and alleviate volume expansion from the interior (by the 3D...
Prussian blue analogs exhibit great promise for applications in aqueous rechargeable sodium‐ion batteries (ARSIBs) due to their unique open framework and well‐defined discharge voltage plateau. However, traditional coprecipitation methods cannot prepare self‐standing electrodes to meet the needs of wearable energy storage devices. In this work, a water bath method is reported to grow microcube‐like...
The increase of reaction temperature of electrocatalysts is regarded as an efficient method to improve the oxygen evolution reaction (OER) activity. Herein, it is reported that the electrocatalytic performance of dual functional (i.e., electrocatalytic and photothermal functions) Co3O4 can be dramatically improved via its photothermal effect. The operating temperature of the Co3O4 electrode is elevated...
The surface energy and surface stability of Ag nanocrystals (NCs) are under debate because the measurable values of the surface energy are very inconsistent, and the indices of the observed thermally stable surfaces are apparently in conflict. To clarify this issue, a transmission electron microscope is used to investigate these problems in situ with elaborately designed carbon‐shell‐capsulated Ag...
V2O5 decorated carbon nanofibers (CNFs) are prepared and used as a multifunctional interlayer for a lithium–sulfur (Li–S) battery. V2O5 anchored on CNFs can not only suppress the shuttle effect of polysulfide by the strong adsorption and redox reaction, but also work as a high‐potential dam to restrain the self‐discharge behavior in the battery. As a result, Li–S batteries with a high capacity and...
Anovel lithiated Si–S battery exploiting an optimized solid‐like electrolyte is presented. This electrolyte is fabricated by integrating ether‐based liquid electrolyte with SiO2 hollow nanosphere layer to suppress the shuttle effect and fluoroethylene carbonate additive to optimize the anodic solid electrolyte interface. The prepared lithiated Si–S batteries exhibit enhanced cycle life, low flammability,...
A novel lithiated silicon‐sulfur battery is presented by B. Li, F. Kang, and co‐workers in article number 1602015. A solid‐like electrolyte fabricated by integrating a silicon oxide hollow nanosphere layer and ether‐based electrolyte with a fluoroethylene carbonate additive was exploited. The prepared battery exhibited enhanced cycle life, low flammability, and strong recovery ability against short‐circuits...
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