Contribution of Ultrahigh Electrochemical Performance of NiCo2O4 Nanoneedle-Based Free-Standing Electrode from Functionalized Carbon Cloth

NANO ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. 2050160
Author(s):  
Shi-Wen Wang ◽  
Zhen Li ◽  
Jun-Peng Ni ◽  
Li-Zhen Wang ◽  
Yong Zhang ◽  
...  
Keyword(s):  
Specific Capacity ◽  
Sodium Dodecyl ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
High Mass ◽  
Carbon Cloth ◽  
Free Standing ◽  
Ion Storage

Spinel structure NiCo2O4 suffers from poor electric conductivity and the resulted electrochemical properties in battery/supercapacitor system are still unsatisfied. In this paper, a free-standing electrode based on in-situ growth NiCo2O4 on carbon cloth has been synthesized by a surfactant-assisted solvothermal method (sodium dodecyl sulfate, SDS). The functional carbon cloth substrate makes unexpected contribution to the electrochemical lithium-ion storage. The assembled supercapacitor possesses ultrahigh pseudocapacitive properties with high mass loading. The specific capacitance of 2832[Formula: see text]F[Formula: see text]g[Formula: see text] has been obtained at 1[Formula: see text]A[Formula: see text]g[Formula: see text] current density with maintaining the high rate capability of 1620[Formula: see text]F[Formula: see text]g[Formula: see text] at 20[Formula: see text]A[Formula: see text]g[Formula: see text]. The obtained nanoneedle NiCo2O4/carbon cloth electrode also maintains a specific capacity of 2000[Formula: see text]mA[Formula: see text]h[Formula: see text]g[Formula: see text] at 40[Formula: see text]mA[Formula: see text]g[Formula: see text] and exceptional rate performance (1504[Formula: see text]mAh[Formula: see text]g[Formula: see text] at 400[Formula: see text]mA[Formula: see text]g[Formula: see text] when tested as anode material in lithium ion batteries.

Co3S4 Nanosheets on Carbon Cloth as Free-Standing Anode with Improved Pseudocapacitive Storage for High-Performance Li-Ion Batteries

NANO ◽  
2020 ◽  
pp. 2150007
Author(s):  
Jinglong Li ◽  
Xia Wang ◽  
Qiang Li ◽  
Hongsen Li ◽  
Jie Xu ◽  
...  
Keyword(s):  
High Performance ◽  
High Surface ◽  
Specific Capacity ◽  
High Surface Area ◽  
Three Dimensional ◽  
Rate Capability ◽  
Lithium Ion ◽  
Carbon Cloth ◽  
Free Standing ◽  
Storage Behavior

Rationally engineered anode materials with high specific capacities and rate capability are essential for lithium-ion batteries (LIBs). In this paper, a free-standing anode composed of Co3S4 nanosheets arrays and carbon cloth (abbreviated Co3S4@CC) was fabricated for high performance LIBs. The three-dimensional (3D) porous carbon cloth could not only improve the conductivity but also boost Li[Formula: see text] transfer and increase contact area for reactions. Besides, the porous thin Co3S4 nanosheets possessing strong interaction with carbon cloth by formation of C–S bond and high surface area could facilitate the mitigation of volume expansion and reduction of Li[Formula: see text] diffusion distance, coupling with efficient contact with electrolytes during cycling process. As expected, the freestanding Co3S4@CC anode presents pseudocapacitance-dominated storage behavior with a very high specific capacity of 847[Formula: see text]mAh g[Formula: see text] at 250[Formula: see text]mA g[Formula: see text] after 100 cycles and good rate capability for LIBs. This work provides an approach for designing metal sulfides with high capacities and rate capability for LIBs, especially flexible LIBs.

Composites of boron-doped carbon nanosheets and iron oxide nanoneedles: fabrication and lithium ion storage performance

2014 ◽  
Vol 2 (24) ◽  
pp. 9111-9117 ◽  
Author(s):  
Yongqiang Yang ◽  
Jianan Zhang ◽  
Xiaochen Wu ◽  
Yongsheng Fu ◽  
Haixia Wu ◽  
...  
Keyword(s):  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
High Rate Capability ◽  
Carbon Nanosheets ◽  
Storage Performance ◽  
Boron Doped ◽  
Ion Storage ◽  
Excellent Cycling Stability

Composites of boron-doped carbon nanosheets/Fe3O4 nanoneedles show a large specific capacity, high rate capability, and excellent cycling stability as an anode for lithium ion batteries.

scholarly journals Proton-assisted calcium-ion storage in aromatic organic molecular crystal with coplanar stacked structure

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Cuiping Han ◽  
Hongfei Li ◽  
Yu Li ◽  
Jiaxiong Zhu ◽  
Chunyi Zhi
Keyword(s):  
Calcium Ion ◽  
Active Material ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
Mechanistic Study ◽  
Ionic Diffusion ◽  
High Rate Capability ◽  
Ion Storage

AbstractRechargeable calcium-ion batteries are intriguing alternatives for use as post-lithium-ion batteries. However, the high charge density of divalent Ca2+ establishes a strong electrostatic interaction with the hosting lattice, which results in low-capacity Ca-ion storage. The ionic radius of Ca2+ further leads to sluggish ionic diffusion, hindering high-rate capability performances. Here, we report 5,7,12,14-pentacenetetrone (PT) as an organic crystal electrode active material for aqueous Ca-ion storage. The weak π-π stacked layers of the PT molecules render a flexible and robust structure suitable for Ca-ion storage. In addition, the channels within the PT crystal provide efficient pathways for fast ionic diffusion. The PT anode exhibits large specific capacity (150.5 mAh g-1 at 5 A g-1), high-rate capability (86.1 mAh g-1 at 100 A g-1) and favorable low-temperature performances. A mechanistic study identifies proton-assisted uptake/removal of Ca2+ in PT during cycling. First principle calculations suggest that the Ca ions tend to stay in the interstitial space of the PT channels and are stabilized by carbonyls from adjacent PT molecules. Finally, pairing with a high-voltage positive electrode, a full aqueous Ca-ion cell is assembled and tested.

In-situ synthesis of Co1−xS-rGO composite for high-rate lithium-ion storage

2019 ◽  
Vol 833 ◽  
pp. 380-386 ◽  
Author(s):  
Zi Wen ◽  
Zhi Zhu ◽  
Bo Jin ◽  
Huan Li ◽  
Weimin Yao ◽  
...  
Keyword(s):  
Lithium Ion ◽  
In Situ Synthesis ◽  
High Rate ◽  
Ion Storage

An artificial sea urchin with hollow spines: improved mechanical and electrochemical stability in high-capacity Li–Ge batteries

Nanoscale ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 5812-5816 ◽  
Author(s):  
Jinyun Liu ◽  
Xirong Lin ◽  
Tianli Han ◽  
Qianqian Lu ◽  
Jiawei Long ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Sea Urchin ◽  
Specific Capacity ◽  
High Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Electrochemical Stability ◽  
High Rate ◽  
High Rate Capability ◽  
High Specific Capacity

Metallic germanium (Ge) as the anode can deliver a high specific capacity and high rate capability in lithium ion batteries.

Fast lithium-ion storage of Nb2O5 nanocrystals in situ grown on carbon nanotubes for high-performance asymmetric supercapacitors

RSC Advances ◽  
2015 ◽  
Vol 5 (51) ◽  
pp. 41179-41185 ◽  
Author(s):  
Xiaolei Wang ◽  
Ge Li ◽  
Ricky Tjandra ◽  
Xingye Fan ◽  
Xingcheng Xiao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
High Performance ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Energy ◽  
Asymmetric Supercapacitors ◽  
Ion Storage ◽  
Energy And Power Density

Nanocomposites of Nb2O5 NCs in situ grown on CNTs are successfully developed with excellent rate capability, leading to the successful fabrication of asymmetric supercapacitors with high energy and power density and long-term cycling stability.

Hydrothermal Synthesis and Electrochemical Behavior of the SnO2/rGO as Anode Materials for Lithium-Ion Batteries

2020 ◽  
Vol 20 (11) ◽  
pp. 7034-7038 ◽  
Author(s):  
Mookala Premasudha ◽  
Bhumi Reddy Srinivasulu Reddy ◽  
Ki-Won Kim ◽  
Nagireddy Gari Subba Reddy ◽  
Jou-Hyeon Ahn ◽  
...  
Keyword(s):  
Anode Materials ◽  
Storage Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
Volume Changes ◽  
Long Cycle Life ◽  
Initial Discharge ◽  
Ion Storage ◽  
High Rate Performance

In this work, the hydrothermal method was employed to produce SnO2/rGO as anode material. Nanostructured SnO2 was prepared to enhance reversibility and to deal with the undesirable volume changes during cycling. The SnO2/rGO hybrid exhibits long cycle life in lithium-ion storage capacity and rate capability with an initial discharge capacity of 1327 mAh/g at 0.1 C rate. These results demonstrate that a fabricated SnO2/rGO matrix will be a possible way to obtain high rate performance.

TiNb2O7 nanorods as a novel anode material for secondary lithium-ion batteries

2016 ◽  
Vol 09 (06) ◽  
pp. 1642004 ◽  
Author(s):  
Lei Hu ◽  
Chunfu Lin ◽  
Changhao Wang ◽  
Chao Yang ◽  
Jianbao Li ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Average Length ◽  
Sol Gel ◽  
Specific Capacity ◽  
Sodium Dodecyl ◽  
Rate Capability ◽  
Lithium Ion ◽  
Average Diameter ◽  
Electrochemical Performances ◽  
Text Type

TiNb2O7 nanorods have been successfully fabricated by a sol–gel method with a sodium dodecyl surfate (SDS) surfactant. X-ray diffraction indicates that the TiNb2O7 nanorods have a Ti2Nb[Formula: see text]O[Formula: see text]-type crystal structure. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) results show that the nanorods have an average diameter of [Formula: see text][Formula: see text]100[Formula: see text]nm and an average length of [Formula: see text][Formula: see text]300[Formula: see text]nm. As a result of such nanosizing effect, this new material exhibits advanced electrochemical performances in terms of specific capacity, rate capability and cyclic stability. At 0.1[Formula: see text]C, it delivers a large first-cycle discharge/charge capacity of 337/279 mAh g[Formula: see text]. Its capacities remain 248, 233, 214, 182, 154 and 122[Formula: see text]mAh g[Formula: see text] at 0.5, 1, 2, 5, 10 and 20[Formula: see text]C, respectively. After 100 cycles, its capacity at 10[Formula: see text]C remains 140[Formula: see text]mAh g[Formula: see text] with large capacity retention of 91.0%.

Sign in / Sign up

Export Citation Format

Share Document