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

Abstract

Pulsed laser deposition technique was used to deposit Cr. The reversible lithium storage capacity of the as-grown material is 692.2 mA h g -1 after 100 cycles, which is much higher than that of Cr 2 O 3 /Ni (111.3 mA h g -1 ). This study reveals the differences between the two material systems and emphasizes the role of the graphene layers in improving the electrochemical stability of the Cr 2 O 3 nanostructured thin film.

CoO-Co nanocomposite anode with enhanced electrochemical performance for lithium-ion batteries

“…These results indicate higher reversibility of the lithiation/delithiation reaction at high rates than those reported pure TMOs film anodes [60][61][62]. The excellent rate performance benefits from both nanocrystalline 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 10 CoO reducing diffusion length [63], and embedded Co nanoparticles promoting the decomposition of Li 2 O [37, [40][41][42].…”

A Nanocrystalline Fe2O3 Film Anode Prepared by Pulsed Laser Deposition for Lithium-Ion Batteries

“…Besides all the above nanostructures, nanocrystalline thin film anodes (NiO [27], MnO [28], Cr 2 O 3 [29], CoFe 2 O 4 [30], Si [31], and Ni 2 N [32]) deposited directly on conducting substrates by pulsed laser deposition or sputtering can also exhibit an excellent electrochemical performance due to the enhanced electrical contact between the substrates and active materials, the shortened diffusion lengths for lithium-ion, and the structure stability. What is more important is that thin films of TMOs have potential applications in all-solid-state microbatteries as self-supported electrodes [33, 34].…”

Facile synthesis of amorphous Cr2O3/N‐doped carbon nanosheets and its excellent lithium storage property

“…In recent years, many strategies have been introduced to overcome the above problems of Cr 2 O 3 , for example, constructing distinctively porous nanostructures, hetero‐atom doping, and preparing Cr 2 O 3 /carbon composites with suitable microstructure . Among these methods, the preparation of Cr 2 O 3 /carbon composite has been widely investigated, in which carbon can not only improve the electroconductivity of active materials and facilitate the transportation of lithium ions and electrons, but also cushion the stress from volume expansion of active materials and prevent the aggregation and pulverization of nanoparticles .…”

“…[11][12][13][14] Among the transitionmetal oxides, Cr 2 O 3 has become a promising candidate owing to its high theoretical capacity of 1058 mAh g À1 and relatively low electromotive force value of 1.085 V. 15,16 However, Cr 2 O 3 has encountered challenges such as fast capacity fading and poor rate performance, due to its poor electroconductivity, large volume expansion, and structural destruction during the charge/discharge cycling. 17,18 In recent years, many strategies have been introduced to overcome the above problems of Cr 2 O 3 , for example, constructing distinctively porous nanostructures, 19,20 heteroatom doping, 21 and preparing Cr 2 O 3 /carbon composites with suitable microstructure. 22,23 Among these methods, the preparation of Cr 2 O 3 /carbon composite has been widely investigated, in which carbon can not only improve the electroconductivity of active materials and facilitate the transportation of lithium ions and electrons, but also cushion the stress from volume expansion of active materials and prevent the aggregation and pulverization of nanoparticles.…”