Titanium-based　anode　materials　have　achieved　much　progress　with　the　wide　studies　in　lithium-ion　batteries.　However,　these　known　materials　usually　possess　high　discharge　voltage　platforms　and　limited　energy　densities.　Herein,　a　titanium-based　oxide　of　Na2TiGeO5　with　layered　structure,　two-dimensional　lamellar　frame　and　exposed　highly　active　(001)　facet,　exhibiting　good　electrochemical　performance　in　terms　of　high　capacity　(410　mAh　g(-1)　with　a　current　density　of　50　mA　g(-1)),　excellent　rate　capability　and　cycling　stability　with　no　obvious　capacity　attenuation　after　4000　cycles,　is　reported.　The　appropriate　discharge　voltage　plateau　at　around　0.2　V　endows　the　Na2TiGeO5　anode　material　high　security　compared　with　graphite　and　high　energy　density　compared　with　spinel　Li4Ti5O12.　Combining　the　electrochemical　tests　and　the　density　functional　theory　calculations,　the　Li+　storage　mechanism　of　Na2TiGeO5　is　elucidated　and　the　conversion　reaction　process　is　revealed.　More　importantly,　this　study　provides　a　way　to　develop　low-voltage　and　high-capacity　titanium-based　anode　materials　for　efficient　energy　storage.