High-performance lithium-rich layered oxide materials: Effects of chelating agents on microstructure and electrochemical properties

One-step synthesis of Li-doped NiO as high-performance anode material for lithium ion batteries

“…XRD results indicate that the samples are NiO without the existence of Ni 2 O 3 . Therefore, it it is believed that the presence of Ni 3 þ may partly due to the exposure of the sample in an air atmosphere and partly ascribe to the existence of a structure containing Ni 2 þ ions with holes [6,32,65]. The broad peak at 860.9 eV can be ascribed to a shakeup process in the NiO structure.…”

“…To meet the requirements of new generation lithium ion batteries, a series of cathode materials [1][2][3][4][5][6][7][8] and anode materials [9][10][11] have been extensively investigated for lithium ion batteries (LIBs). Transition metal oxides (TMOs), such as CoO x [12][13][14][15][16][17], CuO [18][19][20][21][22], SnOx [23][24][25], MnOx [26,27], CoMn 2 O 4 [28,29], ZnMn 2 O 4 [30] and MnCo 2 O 4 [31], have been widely studied as promising alternative anode materials for replacing the graphite used in LIBs for their high theoretical capacities.…”

Template‐Assisted Synthesis of a One‐Dimensional Hierarchical Li1.2Mn0.54Ni0.13Co0.13O2 Microrod Cathode Material for Lithium‐Ion Batteries

“…In addition, the surface elements and valence states of LMCN‐MRs are detected by XPS (Figure ). The binding energy of Ni 2p 3/2 is around 854.5 eV with a satellite peak at about 863.3 eV, which implies that Ni ions are in the +2 state . The binding energies of Co 2p 1/2 and Co 2p 3/2 are around 795.6 and 779.8 eV, which indicates that the Co 2p signal is in the Co 3+ chemical environment .…”

“…The binding energy of Ni 2p 3/2 is around8 54.5 eV with as atellite peak at about 863.3 eV,w hich implies that Ni ions are in the + 2s tate. [26,27] The binding energies of Co 2p 1/2 and Co 2p 3/2 are around 795.6 and 779.8 eV,w hich indicates that the Co 2p signali si nt he Co 3 + chemical environment. [27,28] Furthermore, the binding energies of the Mn 2p 1/2 and Mn 2p 3/2 peaks of LMCN-MRs are around6 54.1 and 641.8 eV,r espectively;t hesev alues are consistent with the value reported for Mn 4 + in MnO 2 .…”

High Performance Lithium-Rich Layered Oxide Material: Effects of Preparation Methods on Microstructure and Electrochemical Properties

“…In addition, the preparation method also affects the atomic spatial uniformity of chemical species [33]. The effect of lithium-rich layered oxides with low nickel content on the synthesis method has been studied intensively [34][35][36]. However, for lithium-rich layered oxides with high nickel content, such as 0.5Li2MnO3•0.5LiNi0.8Co0.1Mn0.1O2 (LL-811), the effects of the preparation method on the microstructure and electrochemical performance, and the reasons for the decreased discharge capacity with increasing nickel content have not been investigated.…”