Synthetic hureaulite as anode material for lithium-ion batteries

The synthetic hureaulite with the formula Mn-5(HOPO3)(2)(PO4)(2)(H2O)(4) (abbreviated as MHPH) was obtained under mild hydrothermal conditions. Crystal structure characterization shows that MHPH has a three-dimensional open-framework structure. The electrochemical performance of MHPH as anode material for lithium-ion batteries (LIBs) was investigated. MHPH delivers a capacity of 778.7 mAh g(-1) at 0.1 A g(-1) and long-term cycling stability over 2000 cycles at 2.0 A g(-1). The electrochemical kinetics analysis indicates that lithium storage of the MHPH anode involves both the diffusion-controlled insertion process and the contribution from surface capacitive effect. This kind of multiple energy storage mode leads to good lithium storage performance of the synthetic hureaulite.