Copper nanoparticles spaced 3D graphene films for binder-free lithium-storing electrodes

2016 ◽  
Vol 4 (21) ◽  
pp. 8466-8477 ◽  
Author(s):  
Dong-Jie Guo ◽  
Zi-Ying Wei ◽  
Bo Shi ◽  
Shi-Wen Wang ◽  
Li-Zhen Wang ◽  
...  
Keyword(s):  
Copper Nanoparticles ◽  
Coulombic Efficiency ◽  
Graphene Film ◽  
Lithium Ion ◽  
Copper Nanoparticle ◽  
3D Graphene ◽  
Graphene Films ◽  
Rate Capacity ◽  
Binder Free ◽  
Charge Discharge

Using a copper nanoparticle-spaced graphene film as the anode, a newly developed lithium-ion battery exhibits a high charge/discharge capacity, an excellent reversibility, a high coulombic efficiency, and a good rate capacity.

scholarly journals Improved lithium-ion battery anode capacity with a network of easily fabricated spindle-like carbon nanofibers

2016 ◽  
Vol 7 ◽  
pp. 1289-1295 ◽  
Author(s):  
Mengting Liu ◽  
Wenhe Xie ◽  
Lili Gu ◽  
Tianfeng Qin ◽  
Xiaoyi Hou ◽  
...  
Keyword(s):  
Carbon Nanofibers ◽  
Coulombic Efficiency ◽  
High Capacity ◽  
Lithium Ion ◽  
Carbon Matrix ◽  
Reversible Capacity ◽  
Excellent Electrochemical Performance ◽  
Rate Capacity ◽  
Binder Free ◽  
Carbon Network

A novel network of spindle-like carbon nanofibers was fabricated via a simplified synthesis involving electrospinning followed by preoxidation in air and postcarbonization in Ar. Not only was the as-obtained carbon network comprised of beads of spindle-like nanofibers but the cubic MnO phase and N elements were successfully anchored into the amorphous carbon matrix. When directly used as a binder-free anode for lithium-ion batteries, the network showed excellent electrochemical performance with high capacity, good rate capacity and reliable cycling stability. Under a current density of 0.2 A g−1, it delivered a high reversible capacity of 875.5 mAh g−1 after 200 cycles and 1005.5 mAh g−1 after 250 cycles with a significant coulombic efficiency of 99.5%.

A universal strategy to prepare porous graphene films: binder-free anodes for high-rate lithium-ion and sodium-ion batteries

2016 ◽  
Vol 4 (22) ◽  
pp. 8837-8843 ◽  
Author(s):  
Xiaoting Zhang ◽  
Jisheng Zhou ◽  
Chengcheng Liu ◽  
Xiaohong Chen ◽  
Huaihe Song
Keyword(s):  
Pore Size ◽  
Graphene Film ◽  
Lithium Ion ◽  
Sodium Ion ◽  
High Rate ◽  
Sodium Ion Batteries ◽  
Porous Graphene ◽  
Graphene Films ◽  
Binder Free

A porous graphene film with controllable pore size is developed for high-rate lithium-ion and sodium-ion batteries.

NiCo2O4 Nanofiber Cluster Assisted by NH4F Growing on 3D Graphene as a Binder-Free Electrode for Lithium-Ion Batteries

2022 ◽  
Author(s):  
Shunchang Li ◽  
Xin Guo ◽  
Lili Zhao ◽  
Fuhua Chen ◽  
Xueying Wang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
3D Graphene ◽  
Binder Free

Lithium-Ion Battery Anode Electrochemical Properties of Si/C Composites Using Graphite and Glucose as Carbon Source

2011 ◽  
Vol 347-353 ◽  
pp. 3506-3509
Author(s):  
Xu Ma ◽  
Yu Ling Liu ◽  
Ling Long Kong ◽  
Yan Hong Ding ◽  
Jie Zhao ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Carbon Source ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Charge Capacity ◽  
X Ray ◽  
Battery Anode ◽  
Charge Discharge ◽  
Scanning Electron ◽  
Discharge Test

Si/C composites were synthesized by using graphite and glucose as carbon source. The samples were characterized by X-ray diffractometer (XRD) and field emission scanning electron microscope(SEM). The electrochemical charge/discharge test was used to evaluate capacity and cycling stability of the composites. The first discharge and charge capacity of SGC composite using graphite and glucose as carbon source were 1661mAh/g and 1259.1 mAh/g, and the first coulombic efficiency was 75.8%. After 20 cycles, the capacity of SGC composite was 380 mAh/g and the coulombic efficiency remained over 98%.

Electrophoretic Deposition of Binder-Free MnO2 /Graphene Films for Lithium-Ion Batteries

2017 ◽  
Vol 35 (10) ◽  
pp. 1575-1585 ◽  
Author(s):  
Tao Xu ◽  
Qinghan Meng ◽  
Qiang Fan ◽  
Meng Yang ◽  
Wanyuan Zhi ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Electrophoretic Deposition ◽  
Lithium Ion ◽  
Graphene Films ◽  
Binder Free

scholarly journals Half and full cell researches of ternary MoS2/graphene/CNT aerogel compostie for enhanced lithium storage performances

2021 ◽  
Vol 2085 (1) ◽  
pp. 012027
Author(s):  
Guanghui Yuan ◽  
Rui Cao ◽  
Ye Chen ◽  
Xinyu Ge ◽  
Qiong Xu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Synthesis Method ◽  
Lithium Ion ◽  
Diffusion Distance ◽  
Lithium Storage ◽  
Free Standing ◽  
Binder Free ◽  
Composite Conductivity ◽  
Discharge Capacities ◽  
Charge Discharge

Abstract Without using any templates, a ternary MoS2/graphene/carbon nanotubes (MoS2/GN/CNT) aerogel compostie is prepared by convenient hydrothermal synthesis method. The free-standing MoS2/GN/CNT aerogel can be cut directly as binder free electrodes in lithium-ion batteries. The MoS2/GN/CNT electrodes can hold as high as 695 and 579 mAh g−1 discharge capacities after 200 cycles at 200 mA g−1 in MoS2/GN/CNT//Li half cells and MoS2/GN/CNT//LiCoO2 full-cells, respectively. The strengthened electrochemical properities are owed by the thin GN/CNT layers and their jagged and wrinkled surfaces, which can enhance the composite conductivity and shorten the Li+ diffusion distance, as well as buffer the volume change of electrodes druing the charge-discharge cycles.

scholarly journals Novel Synthesis of Holey Reduced Graphene Oxide/Polystyrene (HRGO/PS) Nanocomposites by Microwave Irradiation as Anodes for High-Temperature Lithium-Ion Batteries

Materials ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2248 ◽  
Author(s):  
Yazeed Aldawsari ◽  
Yasmin Mussa ◽  
Faheem Ahmed ◽  
Muhammad Arsalan ◽  
Edreese Alsharaeh
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
High Temperature ◽  
Microwave Irradiation ◽  
Reduced Graphene Oxide ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Reduced Graphene ◽  
Discharge Capacities ◽  
Charge Discharge

To overcome the risk of exothermic lithium-ion battery overheating reactions, we fabricated a novel, high-temperature-stable anode material composed of holey reduced graphene oxide/polystyrene (HRGO/PS) nanocomposites synthesized through in situ bulk polymerization in the presence of HRGO via microwave irradiation. The HRGO/PS nanocomposites were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, Raman spectroscopy, and electron microscopy analyses including field-emission scanning electron microscopy and transmission electron microscopy. All characterization studies demonstrated homogenous dispersion of HRGO in the PS matrix, which enhanced the thermal and electrical properties of the overall nanocomposites. These novel HRGO/PS nanocomposites exhibited excellent electrochemical responses, with reversible charge/discharge capacities of 92.1/92.78 mA·h/g at a current density of 500 mA/g with ~100% capacity retention and ~100% coulombic efficiency at room temperature. Furthermore, an examination of the electrochemical properties of these nanocomposites at 110 °C showed that HRGO/PS nanocomposites still displayed good charge/discharge capacities with stable cycle performances for 150 cycles.

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