Hanying Zhang's research while affiliated with South China University of Technology and other places

Publications (5)

Article
Silicon monoxide (SiO) has aroused increased attention as one of the most promising anodes for high‐energy density Li‐ion batteries. To enhance the initial Coulombic efficiencies (ICE) and cycle stability of SiO‐based anodes, a new facile composition and electrode design strategy has been adapted to fabricate a SiO‐Sn‐Co/graphite (G) anode. It achi...
Article
A new ternary SnO2-Co-C composite is produced using a facile and scalable ball milling method, which has a microstructure that includes refined SnO2-Co hybrids embedded in graphite. The Co additives dramatically inhibit Sn coarsening in the lithiated SnO2, which enables highly reversible conversion reactions in the SnO2-based ternary composite duri...
Article
A ternary composite of Fe3O4/SnO2/rGO has been synthesized via a facile one-step hydrothermal method. In the composite, rGO serves as a conductive and robust matrix, Fe3O4 and SnO2 nanoparticles are uniformly loaded on the rGO nanosheets without aggregation, due to the space-confine effect of the simultaneous nucleation and growth of Fe3O4 and SnO2...
Article
In order to further enhance the reversible capacity and cyclability for lithium storage of Sn-based alloy anode materials, a spherical-shaped Sn-Fe3O4@C ternary-phase composite consisting of nanosized tin (Sn), magnetite (Fe3O4), and graphite (C) was prepared via a two-step process using high-efficiency discharge plasma-assisted milling (P-milling)...
Article
Improving the electron conductivity and lithiated structure stability for Si anodes can result in high stable capacity in cells. A Silicon/Wolfram Carbide@Graphene (SW@G) composite anode is designed and produced by a simple two-step ball milling the mixture of coarse-grained Si with good conductive wolfram carbide (WC) and graphite. The SW@G compos...

Citations

... The anode material SiO-Sn-Co/graphite, synthesized by the authors of [118], displayed notable improvements in its initial Coulombic efficiency and cyclic stability, as depicted in Fig. 10. In this hybrid electrode, the incorporation of Sn-Co alloys was instrumental in augmenting the diffusion kinetics of Li + ions and preserving the integrity of SiO. ...
... However, serious volume expansion and particle aggregation of SnO 2 upon uninterrupted charge/discharge, lead to short cycle life and poor stability, which limits the further application of SnO 2 to lithium batteries [9]. Many methods have addressed the above defects in recent years, such as preparing SnO 2 into nanotube or nanosphere structures [10], loading SnO 2 onto carbon nanotube, and doping various metal elements in SnO 2 [11]. These methods improve the stability of SnO 2 and prolong life cycle in; however, improvements in the reversible capacity haven been largely ignored [12]. ...
... Significant discharge capacity at higher current density was attributed to the addition of a small quantity of amorphous Fe2O3. The combination of Fe3O4 with SnO2 and rGO ternary composite prepared by Wang et al. [119] via the hydrothermal method, Fe3O4 and SnO2 NPs uniformly loaded on rGO nanosheets without aggregation prepared. The ternary composite of SnO2/Fe3O4/rGO displayed higher capacity than its binary counterparts due to the benefits of the synergistic effect between SnO2 and Fe3O4 by achieving superior cyclic stability. ...
... In the past decades, intensive efforts have been employed to explore various kinds of new anode materials, including Si, Sn, NiSb, etc.; alloy-type [5-9] and transition metal oxides (e.g., Fe 2 O 3 /Fe 3 O 4 , Co 3 O 4 , SnO 2 , etc.) [10][11][12][13][14] and so on. Ferroferric oxide (Fe 3 O 4 ) is regarded to be a promising anode material and attracts many researchers' interest due to the merits of high reversible theoretical specific capacity (928 mAh g −1 ), low cost and eco-friendliness [9,10,[15][16][17]. Unfortunately, the capacity of the Fe 3 O 4 anode decays very fast, which results from the severe pulverization of Fe 3 O 4 particles because of the huge volume variation caused by lithiation and delithiation; therefore, the Fe 3 O 4 anode exhibits poor cycling stability [18][19][20][21]. ...
... On the other hand, nanosized Si can prevent particlef racture during volumef luctuationsu pon cycling and allow for fast Li-ion transport. [42,160] Besides,s maller Si particles are much more electrochemically stable than bigger ones. Nevertheless, nanosized Si presentt he following disadvantages: [83,100,114] (i)highc ost, (ii)low tap density,( iii)low CE, (iv) low yield, as well as (v) complicatedp reparation routes and hard to be scaled up, which hindert heir commercialization. ...