Provided are a positive electrode slurry composition for a lithium secondary battery, which can be prepared by an improved preparation method by preventing slurry from being gelled by adding an inorganic additive in preparing slurry of a nickel based positive active material, a lithium secondary battery comprising the same and a method of making the lithium secondary battery. The multipurpose gardening tool can be readily assembled and disassembled into different configurations or can be combined to form one single tool. A source line repair circuit receives a common voltage signal and a source driving signal corresponding to the disconnected source line, selects an amplifier having a same polarity type as a polarity type of an amplifier constituting the buffer unit in response to a source driving signal to provide an output signal of the selected amplifier to the disconnected source line. The slurry provides a mixture of powdered stainless steel and silicone oils functioning as the working fluid in the hot side of the heat exchanger. Additional steps may then be taken such as searching for and providing potentially proper word collocations via a user output.