PMID- 24483207 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20141015 LR - 20140228 IS - 1944-8252 (Electronic) IS - 1944-8244 (Linking) VI - 6 IP - 4 DP - 2014 Feb 26 TI - Mn-Ni content-dependent structures and electrochemical behaviors of serial Li(1.2)Ni(0.13+x)Co(0.13)Mn(0.54-x)O(2) as lithium-ion battery cathodes. PG - 2386-92 LID - 10.1021/am404690z [doi] AB - In this paper, a citric acid-assisted sol-gel route has been successfully used for the nanofabrication of serial solid solutions in a chemical formula of Li1.2Ni0.13+xCo0.13Mn0.54-xO2 at the x value of -0.06, -0.03, 0, 0.03, or 0.06. Powdered X-ray diffraction (XRD) results indicate that all the solid solutions possess the well-established structural characteristics for a homogeneous solid solution of Li2MnO3 and LiNi1/3+xCo1/3Mn1/3-xO2 components with an increasing Li2MnO3 content along with the decrease of x value. Scanning electron microscope (SEM) observation and elemental analyses show that these samples are composed of polyhedral nanoparticles with a chemical composition similar to that of the corresponding raw materials. Applied as lithium-ion battery cathodes, the initial Coulombic efficiency, cycling stability, and rate capability of solid solutions are determined by their chemical compositions, giving an optimal x value within the range of -0.03 and 0.03. That is, the variation of x value in the formula Li1.2Ni0.13+xCo0.13Mn0.54-xO2 should exert a great influence on the electrochemical performances of these cathodes. Anyways, these suggest an effective strategy to understand the relationship between the Mn-Ni content-dependent crystal structures and electrochemical behaviors of solid solutions. FAU - Zhao, Chenhao AU - Zhao C AD - Key Laboratory for Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University , Jinan 250100, China. FAU - Wang, Xinxin AU - Wang X FAU - Liu, Xinru AU - Liu X FAU - Zhang, He AU - Zhang H FAU - Shen, Qiang AU - Shen Q LA - eng PT - Journal Article DEP - 20140207 PL - United States TA - ACS Appl Mater Interfaces JT - ACS applied materials & interfaces JID - 101504991 EDAT- 2014/02/04 06:00 MHDA- 2014/02/04 06:01 CRDT- 2014/02/04 06:00 PHST- 2014/02/04 06:00 [entrez] PHST- 2014/02/04 06:00 [pubmed] PHST- 2014/02/04 06:01 [medline] AID - 10.1021/am404690z [doi] PST - ppublish SO - ACS Appl Mater Interfaces. 2014 Feb 26;6(4):2386-92. doi: 10.1021/am404690z. Epub 2014 Feb 7.