title: Long-lived Aqueous Rechargeable Lithium Batteries Using Mesoporous LiTi2(PO4)3@C Anode.
abstract: The instability of anode materials during cycling has been greatly limiting the lifetime of aqueous rechargeable lithium batteries (ARLBs). Here, to tackle this issue, mesoporous LiTi2(PO4)3@C composites with a pore size of 4 nm and a large BET surface area of 165 m(2) g(-1) have been synthesized by a novel two-step approach. The ARLB with this type of LiTi2(PO4)3@C anode, commercial LiMn2O4 cathode and 2 M Li2(SO4) aqueous solution (oxygen was removed) exhibited superior cycling stability (a capacity retention of 88.9% after 1200 cycles at 150 mA g(-1) and 82.7% over 5500 cycles at 750 mA g(-1)) and excellent rate capability (discharge capacities of 121, 110, 90, and 80 mAh g(-1) based on the mass of LiTi2(PO4)3 at 30, 150, 1500, and 3000 mA g(-1), respectively). As verified, the mesoporous structure, large surface area and high-quality carbon coating layer of the LiTi2(PO4)3@C composite contribute to the breakthrough in achieving excellent electrochemical properties for ARLB.
authors.affiliation: College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R. China.
authors.forename: Dan
authors.initials: D
authors.lastname: Sun
authors.affiliation: College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R. China.|Advanced Research Centre, Central South University, Changsha, 410083, P.R. China.
authors.forename: Yougen
authors.initials: Y
authors.lastname: Tang
authors.affiliation: Advanced Research Centre, Central South University, Changsha, 410083, P.R. China.
authors.forename: Kejian
authors.initials: K
authors.lastname: He
authors.affiliation: Battery Materials, Basf China Limited, Shanghai, 201206, P.R. China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Ren
authors.affiliation: College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R. China.
authors.forename: Suqin
authors.initials: S
authors.lastname: Liu
authors.affiliation: College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R. China.|Advanced Research Centre, Central South University, Changsha, 410083, P.R. China.|State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, P.R. China.
authors.forename: Haiyan
authors.initials: H
authors.lastname: Wang