The　KP(15　)nanowires　with　one-dimensional　properties　has　a　defect-free　surface,　high　anisotropy,　and　carrier　mobility　which　is　desirable　for　the　development　of　novel　nanodevices.　However,　the　preparation　of　nanoscale　KP15　is　still　inefficient.　In　this　work,　the　Hansen　solubility　parameters　of　KP15　were　first　obtained.　Based　on　the　Hansen＇s　empirical　theory,　the　concentration　of　liquid-exfoliated　KP15　nanowires　was　improved　to　0.0458　mg.mL(-1)　by　a　solution　containing　50%　water　and　50%　acetone.　Approximately　79%　of　the　KP15　nanowires　had　a　thickness　value　below　50　nm　and　60.9%　of　them　had　a　width　value　below　100　nm.　The　thinnest　KP15　nanowires　reached　5.1　nm　and　had　smooth　boundaries.　Meanwhile,　strong　temperature-dependent　Raman　response　in　exfoliated　KP15　nanowires　has　been　observed,　which　indicates　a　strong　phonon-phonon　coupling　in　those　nanowires.　This　is　helpful　for　non-invasive　temperature　measurements　of　KP15　nanodevices.