The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Lithium–sulfur batteries (LSBs) have attracted extensive attention owing to their high energy density and abundant sulfur resources. However, LSBs are still restricted by the unsatisfactory electrochemical performance resulting from the shuttle effect of lithium polysulfide (LiPSs), and the potential fire hazard caused by inflammable ether electrolytes and polyolefin separators. Herein, a facile immobilization...
Aqueous aluminum ion batteries are rarely constructed due to the unworkable Al metal and the preferential H2 evolution. Herein, organic anode with H2‐inhibition is optimized through tuning the polymerization degree and displays a high‐rate and reversible storage of Al ions based on an enolation between Al ions and the carbonyl double bonds on the conjugated structures. The superiority of the optimal...
For study of electrochemical reaction mechanisms at nanoscale, in situ electrochemical transmission electron microscopy (EC‐TEM) exceeds many other methods due to its high temporal and spatial resolution. However, the limited amount of active materials used in previous in situ TEM studies prevents the model EC cells to operate in the constant‐current (galvanostatic) charge/discharge mode that is required...
Cathodes of rechargeable Zn batteries typically face the issues of irreversible phase transformation, structure collapse, and volume expansion during repeated charge/discharge cycles, which result in an increased transfer resistance and poor long‐term cycling stability. Herein, a facile F doping strategy is developed to boost the cycling stability of nickel cobalt carbonate hydroxide (NiCo–CH) cathode...
There is a growing demand for flexible and wearable energy devices. How to enhance their tolerance to various mechanical stresses is a key issue. Bending, stretching, or twisting of flexible batteries has been widely researched. However, shear force is inevitably applied on the batteries during stretching, bending, and twisting. Unfortunately, thus far, research on analyzing shear resistance of solid...
High‐capacity Li2S cathode (1166 mAh g−1) is regarded as a promising candidate for the next‐generation lithium ion batteries. However, its high potential barrier upon the initial activation process leads to a low utilization of Li2S. In this work, a Li2S/graphite full cell with the zero activation potential barrier is achieved through an in situ electrochemical conversion of Li2S8 catholyte into the...
Recently, wearable electronic devices including electrical sensors, flexible displays, and health monitors have received considerable attention and experienced rapid progress. Wearable supercapacitors attract tremendous attention mainly due to their high stability, low cost, fast charging/discharging, and high efficiency; properties that render them value for developing fully flexible devices. In...
A novel “on‐sheet” solid‐state chemical reaction method is designed to fabricate a nanostructured Li2S‐reduced graphene oxide (rGO) cathode using a semi‐sacrificial sulfur‐graphene oxide template. The as‐fabricated Li2S‐rGO nanocomposite shows a superior electrochemical performance, e.g., high utilization of Li2S active materials (86.3 wt%), long cell life (1000 cycles), and excellent rate ability...
An ultimate integration strategy making use of material and geometry is applied in a proof‐of‐concept study. Integrated supercapacitor‐sensor systems with the capability of photodetecting and strain sensing are fabricated based on multifunctional conducting polypyrrole and piezoresistive textile geometry, respectively. This integration strategy enables promising applications for self‐powered smart...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.