Nano-Architectured Nickel-Cobalt-Manganese Based Ternary Materials as Cathodes for Sodium/Potassium Ion Batteries
LiNi0.5Co0.2Mn0.3O2 ternary material has received wide attention as a promising cathode material for lithium-ion batteries (LIBs). However, lithium is too rare to be deployed in the rapidly developing market. Sodium, potassium and many other
alkaline metals have been widely studied as next generation batteries that can replace LIBs. In this work, we prepared NaNi0.5Co0.2Mn0.3O2 (Na-NCM) and KNi0.5Co0.2Mn0.3O2 (K-NCM) electrode materials through
a facile electro-chemical alkali metal exchange method. X-ray diffraction analysis and ex-situ scanning electron microscopy showed that the electrodes maintain their original crystal structure, and Na-NCM electrode has better structural integrity and stability than K-NCM. The resulting
Na-NCM and K-NCM electrodes exhibited excellent electrochemical performances with 166 mAh · g–1 and 85 mAh · g–1 at 0.1 C in sodium-ion batteries (SIBs) and potassium-ion batteries (KIBs), respectively. This work indicated that the commercial
layered Na-NCM and K-NCM electrodes are promising cathodes for the advanced SIBs and KIBs.
Keywords: ELECTROCHEMICAL LI–NA/K EXCHANGE; KNI0.5CO0.2MN0.3O2; NANI0.5CO0.2MN0.3O2; POSITIVE MATERIALS; POTASSIUM-ION BATTERIES; SODIUM-ION BATTERIES
Document Type: Short Communication
Publication date: 01 January 2019
- Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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