We　fabricated　a　sandwich-like　branched-polyethyleneimine　(b-PEI)/TiO2/Au/graphene　oxide　(GO)　nanocomposite　through　a　biomimetic　layer-by-layer　co-mineralization　approach,　and　the　polymer　b-PEI　was　believed　to　act　as　both　an　inducing　agent　for　the　hydrolysis　of　titanium　bis(ammonium　lactato)dihydroxide　(Ti-BALDH)　and　a　reducing　agent　for　the　reduction　of　HAuCl4　in　the　synthetic　procedure.　Upon　organic　pyrolysis　in　air　at　500　degrees　C,　a　TiO2/Au　nanosheet　was　formed;　and　gold　nanocrystals　were　observed　uniformly　dispersed　on　TiO2　nanosheet.　Moreover,　the　obtained　TiO2/Au　nanosheets　demonstrated　an　enhanced　lithium　storage　performance　when　they　are　used　as　anode　materials　for　lithium　ion　batteries　(LIBs),　particularly,　a　high　capacity　of　205　mA　h　g(-1)　and　189　mA　h　g(-1)　was　obtained　at　5　C　and　10　C　rate,　respectively,　indicating　the　high　rate　capability　of　the　material.　The　greatly　improved　rate　performance　might　be　attributed　from　both　the　sheet-like　nanostructure　and　the　existence　of　uniformly　dispersed　gold　nanocrystals,　which　facilitate　electron　transfer　and　lithium　ions　diffusion　in　the　material.　The　result　suggests　that　the　TiO2　electrode　performance　can　be　improved　through　a　design　of　sheet-like　nanocomposites　using　a　bio-inspired　route,　which　is　desirable　for　both　＂green　synthesis＂　and　application　for　high　power　LIBs,　moreover,　such　a　benign　bio-inspired　route　can　be　developed　into　a　general　pathway　to　synthesize　many　other　TiO2　based　nanocomposites　for　broad　applications　in　the　fields　of　batteries,　photoelectrochemistry,　photocatalysis　and　dye-sensitized　solar　cells.