Lina Wan's research while affiliated with South China University of Technology and other places

Publications (7)

Article
Full-text available
The LiNi0.5Mn1.5O4 (LNMO) spinel is an attractive cathode material for next generation lithium-ion batteries as it offers a high power capability with a discharge voltage of 4.7 V and a theoretical capacity of 147 mA h g−1. In this paper, porous LNMO microspheres/cubes, which are constructed with nanometer-sized primary particles with different Ni/...
Article
The development of new electrode materials for lithium-ion batteries (LIBs) is of great interest because available electrode materials may not meet the high-energy demands for electronic devices, especially the demands for good cyclic and rate performance. Mn-based oxides have received substantial attention as promising anode materials for LIBs due...
Article
The LiNi0.5Mn1.5O4 (LNMO) spinel is an attractive cathode candidate for next generation lithium-ion batteries as it offers high power and energy density. In this paper, the effects of extra amounts of lithium addition and postannealing process on the physicochemical and electrochemical properties of the spherical LNMO material were investigated. Th...
Article
There is a great interest in utilization of silicon-based anode for lithium-ion batteries. However, its poor cycling stability caused by dramatic volume change during lithium ion intercalation and intrinsic low electric conductivity hamper its industrial applications. A facile strategy is reported here to fabricate graphene oxide-immobilized NH2-te...

Citations

... As displayed by curves a-d in Figure 1d, the peaks observed at 629 cm −1 were attributed to the Mn-O stretching vibration of MnO 6 octahedron, and the peaks observed at 486 and 397 cm −1 corresponded to Ni-O stretching vibration in the crystal structure [29]. The peaks observed at 580-600 cm −1 were mostly related to the ordered crystal structure with the P4 3 32 space group [30]. ...
... In addition, the weak diffraction peaks at 2h = 37.5°, 43.6°, and 63.5°are attributed to the impurity phase of rock salt (Ni x O, Ni 6 MnO 8 or Li 1-x Ni x O) [28,29]. [30]. However, no characteristic diffraction peaks indexing to Li 3 PO 4 phase were observed in the XRD patterns of PMA-LPO, which probably suggest the small amount of H 3 PO 4 addition or the amorphous coating. ...
... Due to the merits such as high activity, easy availability and low cost, a series of Mn-based oxides have been applied as the electrode active materials of the primary batteries, lithium ion batteries, supercapacitors and Li-O 2 batteries [18]. As one of manganese oxides, Mn 2 O 3 has a high theoretical Li-storage capacity (1018 mAh/g), low reaction potential and low voltage hysteresis (< 0.8 V) for lithium ion batteries [19,20]. Therefore, it is interesting to investigate the inexpensive and easily available Mn 2 O 3 anode material. ...
... In Fig. 3a, survey spectrum verifies the C, Sn and Ga. In Fig. 3b, C 1 s spectrum shows peaks at 284.8, 285.8, 288.3, and 291.2 eV, assigning to CAC, CAO, C@O, and O-C@O, respectively [28,29]. For the Ga 3d spectrum (Fig. 3c), Ga-O (20.2 eV) and O 2 s (25.5 eV) are verified. ...
... Meanwhile, no carbon crystal or impurity peak was detected in the diffraction patterns, reflecting that the LMFP sample has high phase purity and the coated carbon is amorphous. It can be noted from the local amplification of diffraction patterns shown in Fig. 1b [24][25][26][27]. To further study the cell parameters of the LMFP sample, cell refinement calculation was carried out using MDI Jade 6 software (as shown in Table 1). ...
... It is worth mentioning that ZnFe2O4 alone has low activity as an adsorbent for CV dye removal as examined during the pilot studies. Moreover, it is reported that ZnFe2O4 with certain structural morphologies and particle sizes may have photocatalytic properties [47,48]. Thus, to ensure that no catalytic CV degradation by ZnFe2O4 occurs, batch experiments of pure AC, pure ZnFe2O4, and ZFAC nanocomposite were separately performed under the adsorption operating condition (30 mg adsorbent, 50 mL of 100 ppm adsorbate, 2 and 24 h agitation time, 150 rpm agitation speed, room temperature, and normal laboratory lighting that automatically shut down overnight). ...