Page 18 - Cathode Materials News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Abstract Most of the cathode materials for potassium ion batteries (PIBs) suffer from poor structural stability due to the large ionic radius of K , resulting in poor cycling stability. Here we report a low-strain potassium-rich K Ni[Fe(CN) ] ⋅0.49 H O (KNiHCF) as a cathode material for PIBs. The as-prepared KNiHCF cathode can deliver reversible discharge capacity of 62.8 mAh g at 100 mA g , with a high discharge voltage of 3.82 V. It can also achieve a superior rate performance of 45.8 mAh g at 5000 mA g , with a capacity retention of 88.6 % after 100 cycles. The superior performance of ...

Abstract The content of cyclable sodium ions in the sodium ion pouch cell can determine the energy density and cycling lifespan directly and efficiently by alleviating the sodium ion loss in the initial formation process and following cycling period. The method of electrocatalytic-driven compensation sodium ions was explored, and the cell fabrication process was proposed as well. High sodium content (88%) sodium oxide (Na O) can provide sufficient cyclable sodium ions electrocatalytic-driven by high active Ruthenium@graphene (Ru@G) electrocatalyst to compensate the sodium loss during the init...

Abstract Rechargeable sodium–oxygen (Na-O ) and sodium–carbon dioxide (Na-CO ) batteries have attracted intensive research attention in recent years owing to their advantages of high theoretical energy density, modest cost, abundance of sodium resources, and promising potential for achieving real sodium–air batteries in large-scale energy storage systems. Nevertheless, current research on Na-O and Na-CO batteries is facing enormous challenges, such as low energy efficiency and limited cycle life, which are restricting their progress at the initial stage. Therefore, understanding their...

China’s cobalt sulphate output stood at 3,615 mt (Co content) in February, down 16.6% month on month, but up 99.6% year on year. Some cobalt salts plants were closed for 7-10 days in February for the Chinese New Year (CNY) holiday, which led to the decline in cobalt sulphate output. Please sign in to continue reading the full article for free Already registered? Sign in

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