Nanocrystalline MnO thin film anode for lithium ion batteries with low overpotential

Interdispersed Amorphous MnOx–Carbon Nanocomposites with Superior Electrochemical Performance as Lithium‐Storage Material

“…In contrast, the lithiation potential of crystalline MnO x in the second cycle was 0.2 V higher than that in the first lithiation, as shown in Figure 7b. The increased lithiation potential of crystalline MnO x after the first lithiation has been widely reported in the literature, [7,8,12] and is attributed to the high stress/strain caused by the large volume change of crystalline MnO x in the conversion reaction. The CV measurements in Figure 7 also revealed the different conversion reaction processes of these two electrodes.…”

“…The agglomeration of manganese grains and phase transformation of crystalline manganese oxides during cycling also limited the cycling stability. [7,8] Moreover, the large volume change during phase transformation of crystalline manganese oxides decreased the conversion reaction rate, resulting in a low lithiation potential. It was reported that crystalline MnO particle composed of nanometer-sized (10-30 nm) MnO grains could be lithiated at a potential that was 0.4 V higher than the bulk MnO particle due to the enhanced conversion reaction kinetics.…”

“…[4][5][6] The nanometer-sized Mn grains create a large contact surface between metal and Li 2 O that makes the reverse reaction kinetically favorable. A variety of manganese oxide (MnO, [7][8][9][10][11][12] Mn 2 O 3 , [11,12] MnO 2 , [12][13][14][15][16][17] and Mn 3 O 4 [12,[18][19][20] ) anode materials have been investigated. The reversibility of conversion reaction depends on the MnO x phase structure, oxygen content x in MnO x and particle size.…”

Pulsed laser deposited Cr2O3 nanostructured thin film on graphene as anode material for lithium-ion batteries

“…However, the fact that their performance, in terms of energy and power density requires continuous improvement has encouraged ever-greater scientific efforts toward the search for new materials that could replace the current state-of-the-art materials [3]. A large number of transition metal oxides, such as Fe 2 O 3 [4], Nb 2 O 5 [5], Ta 2 O 5 [6], ZnO [7], MnO [8], NiO [9], Co 3 O 4 [10], Cu 2 O [11], have been investigated as promising anode materials for lithium-ion batteries [12]. In 2000, Poizot et al [13] reported that nanosized transition metal oxides react reversibly with lithium at room temperature.…”

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“…Several novel and effective routes have been devoted to prepare manganese oxides nanomaterials with various shapes and excellent properties, such as hydrothermal method, [17] solgel synthesis, [18] wet chemical route, [19] pulsed laser deposition method, [20] precursor technique, [21] thermal process, [22] precipitation method, [23] sonochemical method, [24] and microemulsion. [25] However, there are very few reports only available about MONPs preparation in the green synthesis.…”