Connecting carbon nanotubes to polyoxometalate clusters for engineering high-performance anode materials

2014 ◽  
Vol 16 (36) ◽  
pp. 19668-19673 ◽  
Author(s):  
Wei Chen ◽  
Lujiang Huang ◽  
Jun Hu ◽  
Tengfei Li ◽  
Feifei Jia ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electronic Properties ◽  
Discharge Capacity ◽  
Anode Materials ◽  
High Performance ◽  
Covalent Modification ◽  
Capacity Retention ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Structural And Electronic Properties

Carbon nanotubes (CNTs) possess excellent structural and electronic properties and have been widely investigated as anode materials. Covalent modification of carbon nanotubes (CNTs) with organosilica-containing polyoxometalate (POM) leads to the formation of the nanocomposite CNTs–SiW11 with high discharge capacity, good capacity retention and cycling stability.

Encapsulating sulfur into highly graphitized hollow carbon spheres as high performance cathode for lithium–sulfur batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (100) ◽  
pp. 98035-98041 ◽  
Author(s):  
Shuangke Liu ◽  
Xiaobin Hong ◽  
Yujie Li ◽  
Jing Xu ◽  
Chunman Zheng ◽  
...  
Keyword(s):  
High Performance ◽  
High Capacity ◽  
Carbon Sphere ◽  
Carbon Spheres ◽  
Capacity Retention ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Lithium Sulfur Batteries ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

Encapsulating sulfur into a highly graphitized hollow carbon sphere (GHCS) is proposed as sulfur cathode, the S@GHCS delivers a high discharge capacity of ∼800 mA h g−1at 4C rate and high capacity retention of 93.7% after 240 cycles.

A high performance SnO2/C nanocomposite cathode for aluminum-ion batteries

2019 ◽  
Vol 7 (12) ◽  
pp. 7213-7220 ◽  
Author(s):  
Hongyan Lu ◽  
Yuanxin Wan ◽  
Tianyi Wang ◽  
Rong Jin ◽  
Peitao Ding ◽  
...  
Keyword(s):  
Discharge Capacity ◽  
High Performance ◽  
Cycle Life ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Long Cycle ◽  
Aluminum Ion ◽  
Long Cycle Life

A novel SnO2/C AIB with high discharge capacity and long cycle life is achieved.

scholarly journals Advanced Current Collectors with Carbon Nanofoams for Electrochemically Stable Lithium—Sulfur Cells

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2083
Author(s):  
Shu-Yu Chen ◽  
Sheng-Heng Chung
Keyword(s):  
Discharge Capacity ◽  
Storage Capacity ◽  
Charge Storage ◽  
Sulfur Cathode ◽  
Capacity Retention ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Sulfur Battery ◽  
Coated Carbon ◽  
Lithium Sulfur

An inexpensive sulfur cathode with the highest possible charge storage capacity is attractive for the design of lithium-ion batteries with a high energy density and low cost. To promote existing lithium–sulfur battery technologies in the current energy storage market, it is critical to increase the electrochemical stability of the conversion-type sulfur cathode. Here, we present the adoption of a carbon nanofoam as an advanced current collector for the lithium–sulfur battery cathode. The carbon nanofoam has a conductive and tortuous network, which improves the conductivity of the sulfur cathode and reduces the loss of active material. The carbon nanofoam cathode thus enables the development of a high-loading sulfur cathode (4.8 mg cm−2) with a high discharge capacity that approaches 500 mA·h g−1 at the C/10 rate and an excellent cycle stability that achieves 90% capacity retention over 100 cycles. After adopting such an optimal cathode configuration, we superficially coat the carbon nanofoam with graphene and molybdenum disulfide (MoS2) to amplify the fast charge transfer and strong polysulfide-trapping capabilities, respectively. The highest charge storage capacity realized by the graphene-coated carbon nanofoam is 672 mA·h g−1 at the C/10 rate. The MoS2-coated carbon nanofoam features high electrochemical utilization attaining the high discharge capacity of 633 mA·h g−1 at the C/10 rate and stable cyclability featuring a capacity retention approaching 90%.

Carbon dioxide in the cage: manganese metal–organic frameworks for high performance CO2electrodes in Li–CO2batteries

2018 ◽  
Vol 11 (5) ◽  
pp. 1318-1325 ◽  
Author(s):  
Siwu Li ◽  
Yu Dong ◽  
Junwen Zhou ◽  
Yuan Liu ◽  
Jiaming Wang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Discharge Capacity ◽  
High Performance ◽  
Metal Organic Frameworks ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Metal Organic

Manganese MOF-based cathodes achieve high discharge capacity, reduced overpotentials and promoted reversibility in Li–CO2batteries.

Graphene-wrapped sulfur-based composite cathodes: ball-milling synthesis and high discharge capacity

RSC Advances ◽  
2014 ◽  
Vol 4 (89) ◽  
pp. 48438-48442 ◽  
Author(s):  
Zhong Su ◽  
Chenglong Gao ◽  
Hanlin Li ◽  
Sanjay Nanda ◽  
Chao Lai ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Ball Milling ◽  
Discharge Capacity ◽  
Large Scale ◽  
Electrode Materials ◽  
Cycle Performance ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Composite Cathodes ◽  
Good Consistency

A graphene-wrapped sulfur/carbon nanotubes composite is prepared via a ball-milling route, which can help realize the large-scale synthesis of electrode materials with good consistency. The obtained composite shows a high discharge capacity and good cycle performance.

scholarly journals One-Dimensional Sb2Se3 Nanorods Synthesized through a Simple Polyol Process for High-Performance Lithium-Ion Batteries

2018 ◽  
Vol 2018 ◽  
pp. 1-9
Author(s):  
Yuan Tian ◽  
Zhenghao Sun ◽  
Yan Zhao ◽  
Taizhe Tan ◽  
Hui Liu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
High Performance ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Polyol Process ◽  
High Discharge ◽  
One Dimensional ◽  
High Discharge Capacity ◽  
Structural Characterizations

The good crystalline Sb2Se3 nanorods have been successfully synthesized through a simple polyol process. The detailed morphological and structural characterizations reveal that nanorods are composed of Sb2Se3 single crystals oriented along the [120] orientation; the tiny Sb2Se3 nanorods are found to display a higher crystallinity with respect to thick Sb2Se3 nanorods. The nanorods have been applied as anode materials for lithium-ion batteries, with tiny Sb2Se3 nanorod anodes delivering the relatively high discharge capacity of 702 mAh g−1 at 0.1 C and could maintain the capacity of 230 mAh g−1 after 100 cycles. A more stable cycling performance is also demonstrated on tiny Sb2Se3 nanorods, which is ascribed to their more pronounced one-dimensional nanostructure.

Nanostructured WSe2/C composites as anode materials for sodium-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (16) ◽  
pp. 12726-12729 ◽  
Author(s):  
Zhian Zhang ◽  
Xing Yang ◽  
Yun Fu
Keyword(s):  
Solid State ◽  
Discharge Capacity ◽  
Solid State Reaction ◽  
Anode Materials ◽  
Carbon Matrix ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Excellent Cycling Stability

75.57% crystal WSe2 nanoparticles are uniformly dispersed on a carbon matrix to form WSe2/C nanomaterials using a solid-state reaction. The WSe2/C nanomaterials in sodium-ion batteries exhibit high discharge capacity and excellent cycling stability.

TiO2 Nanosheet-Redox Graphene Oxide/Sulphur Cathode for High-Performance Lithium-Sulphur Batteries

2020 ◽  
Vol 20 (3) ◽  
pp. 1715-1722
Author(s):  
Shu Hong ◽  
Yunzhao Han ◽  
Kun Zhang ◽  
Mingbo Wang ◽  
Nana Cui ◽  
...  
Keyword(s):  
Discharge Capacity ◽  
Active Sites ◽  
High Performance ◽  
Synergistic Effects ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Specific Discharge

Lithium-sulphur batteries are considered as some of the most potent secondary-battery systems. These batteries are expected to have extensive applications in fields requiring high-energy density. However, such applications are hindered by some serious intrinsic obstacles. Herein, TiO2 nanosheets-rGO/sulphur (TiO2 NS-rGO/S) composites were fabricated through a two-process hydrothermal method. TiO2 nanosheets served as active sites for polysulphide absorption, whereas rGO offered space for sulphur improvement and TiO2 NS-rGO/S composites. The TiO2 NS-rGO/S composite exhibited high discharge capacity of 1099 mAh·g-1 at 0.2 C rate and retained a capacity of 690 mAh·g-1 after 100 cycles, with high sulphur loading of 3 mg·cm-2. The high initial specific discharge capacity and improved cyclic stability were attributed to the synergistic effects of TiO2 nanosheets and rGO. These results indicated that the simple, low-cost and scalable method provides a novel perspective on practical utilisation of lithium-sulphur batteries.

scholarly journals dual-ion charge-discharge behaviors of Na-NiNc and NiNc-NiNc batteries

2021 ◽  
Author(s):  
Jinkwang Hwang ◽  
Rika Hagiwara ◽  
Hiroshi Shinokubo ◽  
Ji-Young Shin
Keyword(s):  
Discharge Capacity ◽  
Electrode Material ◽  
High Stability ◽  
Coulombic Efficiency ◽  
Active Electrode ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Charge Discharge ◽  
High Coulombic Efficiency

Dual-ion sodium-organic secondary batteries were provided with antiaromatic porphyrinoid, NiNc as an active electrode material, which implemented inherent charge-discharge behaviors with high discharge capacity, high stability, high Coulombic efficiency with...

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