Synthesis of ZnO quantum dot/graphene nanocomposites by atomic layer deposition with high lithium storage capacity

2014 ◽  
Vol 2 (20) ◽  
pp. 7319-7326 ◽  
Author(s):  
Xiang Sun ◽  
Changgong Zhou ◽  
Ming Xie ◽  
Hongtao Sun ◽  
Tao Hu ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Quantum Dot ◽  
Electrochemical Properties ◽  
Storage Capacity ◽  
Lithium Ion ◽  
Atomic Layer ◽  
Lithium Storage ◽  
Graphene Nanocomposites ◽  
Layer Deposition ◽  
Zno Qds

Uniform ZnO QDs with controllable sizes from 2 to 7 nm on graphene were synthesized. The ZnO QD/graphene nanocomposites show enhanced electrochemical properties as lithium ion battery anodes.

An alumina stabilized graphene oxide wrapped SnO2 hollow sphere LIB anode with improved lithium storage

RSC Advances ◽  
2015 ◽  
Vol 5 (122) ◽  
pp. 100783-100789 ◽  
Author(s):  
Xiang Liu ◽  
Qian Sun ◽  
Alan M. C. Ng ◽  
A. B. Djurišić ◽  
Maohai Xie ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Atomic Layer Deposition ◽  
Lithium Ion Battery ◽  
Hollow Sphere ◽  
Hollow Spheres ◽  
Lithium Ion ◽  
Atomic Layer ◽  
Alumina Coating ◽  
Lithium Storage ◽  
Layer Deposition

SnO2 hollow spheres were stabilized by graphene oxide wrapping, by alumina coating deposited via atomic layer deposition (ALD), or the combination of the two methods and used in lithium ion battery anodes.

scholarly journals Atomic Layer Deposition of Ni-Co-O Thin-Film Electrodes for Solid-State LIBs and the Influence of Chemical Composition on Overcapacity

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 907
Author(s):  
Yury Koshtyal ◽  
Ilya Mitrofanov ◽  
Denis Nazarov ◽  
Oleg Medvedev ◽  
Artem Kim ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Atomic Layer Deposition ◽  
Nickel Oxide ◽  
Cobalt Oxide ◽  
Lithium Ion ◽  
Atomic Layer ◽  
Metallic Nickel ◽  
Uniform Density ◽  
Oxide Content ◽  
Layer Deposition

Nanostructured metal oxides (MOs) demonstrate good electrochemical properties and are regarded as promising anode materials for high-performance lithium-ion batteries (LIBs). The capacity of nickel-cobalt oxides-based materials is among the highest for binary transition metals oxide (TMOs). In the present paper, we report the investigation of Ni-Co-O (NCO) thin films obtained by atomic layer deposition (ALD) using nickel and cobalt metallocenes in a combination with oxygen plasma. The formation of NCO films with different ratios of Ni and Co was provided by ALD cycles leading to the formation of nickel oxide (a) and cobalt oxide (b) in one supercycle (linear combination of a and b cycles). The film thickness was set by the number of supercycles. The synthesized films had a uniform chemical composition over the depth with an admixture of metallic nickel and carbon up to 4 at.%. All samples were characterized by a single NixCo1-xO phase with a cubic face-centered lattice and a uniform density. The surface of the NCO films was uniform, with rare inclusions of nanoparticles 15–30 nm in diameter. The growth rates of all films on steel were higher than those on silicon substrates, and this difference increased with increasing cobalt concentration in the films. In this paper, we propose a method for processing cyclic voltammetry curves for revealing the influence of individual components (nickel oxide, cobalt oxide and solid electrolyte interface—SEI) on the electrochemical capacity. The initial capacity of NCO films was augmented with an increase of nickel oxide content.

Improving the photodetection and stability of a visible-light QDs/ZnO phototransistor via an Al2O3 additional layer

2021 ◽  
Author(s):  
Sungho Park ◽  
Byung Jun Kim ◽  
Tae Yeon Kim ◽  
Eui Young Jung ◽  
Kyu-Myung Lee ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Atomic Layer Deposition ◽  
Quantum Dot ◽  
Aluminum Oxide ◽  
Thin Layer ◽  
Visible Light ◽  
Atomic Layer ◽  
Zno Films ◽  
Additional Layer ◽  
Layer Deposition

We have developed a visible-light phototransistor with excellent photodetection characteristics and stability via atomic layer deposition (ALD) to add a thin layer of aluminum oxide (Al2O3) to quantum dot (QD)/zinc oxide (ZnO) films.

Synthesis of high-voltage (4.7 V) LiCoO2 cathode materials with Al doping and conformal Al2O3 coating by atomic layer deposition

RSC Advances ◽  
2016 ◽  
Vol 6 (68) ◽  
pp. 63250-63255 ◽  
Author(s):  
Ming Xie ◽  
Tao Hu ◽  
Liu Yang ◽  
Yun Zhou
Keyword(s):  
Atomic Layer Deposition ◽  
Electrochemical Properties ◽  
High Voltage ◽  
Cathode Materials ◽  
Atomic Layer ◽  
Al2o3 Coating ◽  
Al Doping ◽  
Layer Deposition ◽  
Licoo2 Cathode

The electrochemical properties of high-voltage (4.7 V) LiCoO2 cathode materials with Al doping and a conformal Al2O3 coating by atomic layer deposition were studied in this paper.

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