Super-small　sized　TiO2　nanoparticles　are　in　situ　co-composited　with　carbon　and　nickel　nanoparticles　in　a　facile　scalable　way,　using　difunctional　methacrylate　monomers　as　solvent　and　carbon　source.　Good　control　over　crystallinity,　morphology,　and　dispersion　of　the　nanohybrid　is　achieved　because　of　the　thermosetting　nature　of　the　resin　polymer.　The　effects　of　the　nickel　nanoparticle　on　the　composition,　crystallographic　phase,　structure,　morphology,　tap　density,　specific　surface　area,　and　electrochemical　performance　as　both　lithium-ion　and　sodium-ion　battery　anodes　are　systematically　investigated.　It　is　found　that　the　incorporation　of　the　in　situ　formed　nickel　nanoparticles　with　certain　content　effectively　enhances　the　electrochemical　performance　including　reversible　capacities,　cyclic　stability　and　rate　performance　as　both　lithium-ion　and　sodium-ion　battery　anodes.　The　experimental　I-V　profiles　at　different　temperatures　and　theoretical　calculations　reveal　that　the　charge　carriers　are　accumulated　in　the　amorphous　carbon　regions,　which　act　as　scattering　centers　to　the　carriers　and　lower　the　carrier　mobility　for　the　composite.　With　increasing　nickel　content,　the　mobility　of　the　charge　carriers　is　significantly　increased,　while　the　number　of　the　charge　carriers　maintains　almost　constant.　The　nickel　nanoparticles　provide　extra　pathways　for　the　accumulated　charge,　leading　to　reduced　scatterings　among　the　charge　carriers　and　enhanced　charge-carrier　transportation.