Nickel 54 Nickel compounds 39 Nickel alloys 25 nickel 23 Nickel oxide 19 human 16 Binary alloys 14 Humans 14 Cobalt compounds 13 Scanning electron microscopy 13 Article 12 Lithium-ion batteries 12 Titanium alloys 12 Electrolytes 10 Lithium compounds 10 Titanium 10 Cathodes 9 Precipitation (chemical) 9 Superalloys 9 Adsorption 8 Catalyst activity 8 Electrochemical electrodes 8 X ray diffraction 8 procedures 8 Crystal structure 7 Electrodes 7 Ions 7 Iron compounds 7 Substrates 7 Temperature 7