These Li- and Mn-rich layered oxides (LMLOs) have improved capacities exceeding 250 mA h g−1, much higher than the capacity of conventional cathodes (<200 mA h g−1)11. The extra capacity was found to be linked to the contribution of reversible oxygen redox activity in...
The performance of aqueous LIBs is significantly impacted by the dissolved O2 in electrolytes from the air through the oxygen reduction reaction (ORR). Xia and coworkers10 have demonstrated that any discharged negative electrode in an aqueous LIB would react with O2, resulting in the marked ...
reaction with air by a thin film of the electrolyte. The lithium is ladled from the cell and cast by pouring it into a mold at a temperature only slightly above the melting point, leaving the solidified electrolyte behind. The solidified lithium is then remelted, and materials insoluble in ...
The design can inhibit the self-discharge by substantially suppressing the oxygen reduction reaction on lithiated anodes and enable good cycle performance over 1000 times. Our study may open a pathway towards safer lithium-ion battery designs. 展开 ...
The ideal catalyst can optimize the electrochemical performance of the LOBs by catalyzing the two reaction processes of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) during cycling. Carbon materials are evidently proven to be the satisfying catalysts for ORR [14], [15], [16...
In the middle between the two electrodes, a bipolar air electrode 13 is formed on both sides of a bulkhead made of a liquid non-transmissive and electron conductive material, and thereby the hydrogen generating reaction in a lithium/water system is separated from the oxygen reduction reactions.;...
Electronic Structure of Lithium Peroxide Clusters and Relevance to Lithium–Air Batteries The prospect of Li鈥揳ir(oxygen) batteries has generated much interest because of the possibility of extending the range of electric vehicles due to their ... KC Lau,RS Assary,P Redfern,... - 《Journal ...
The formation of O2 and CO2 would lead to the loss of oxygen and thus the transformation from layered to rock-salt phase (Fig. 2) (Zhang, 2020b). The formed NiO-like rock-salt phase is not electrochemically active and ionic conductive, leading to increased impedance and performance ...
14. All of these issues are indeed linked to each other and are originated largely from irreversible characteristic of the reaction at the air cathode. In the cathode reaction, 2Li++ O2+ 2e−[lrhar2 ] Li2O2, the reverse oxygen evolution reaction (OER) is required to overcome higher ...
Searching for low-cost and efficient catalysts for the oxygen evolution reaction has been actively pursued owing to its importance in clean energy generation and storage. While developing new catalysts is important, tuning the electronic structure of existing catalysts over a wide electrochemical potential...