scholarly journals One-Pot Synthesis of Glucose-Derived Carbon Coated Ni3S2 Nanowires as a Battery-Type Electrode for High Performance Supercapacitors

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 678
Author(s):  
Zhongkai Wu ◽  
Haifu Huang ◽  
Wenhui Xiong ◽  
Shiming Yang ◽  
Huanhuan Huang ◽  
...  
Keyword(s):  
Carbon Source ◽  
High Performance ◽  
Specific Capacity ◽  
Rate Capability ◽  
One Pot ◽  
Great Performance ◽  
Carbon Coated ◽  
Binder Free ◽  
Coated Carbon ◽  
Supercapacitor Applications

We report a novel Ni3S2 carbon coated (denoted as NCC) rod-like structure prepared by a facile one-pot hydrothermal method and employ it as a binder free electrode in supercapacitor. We coated carbon with glucose as carbon source on the surface of samples and investigated the suitable glucose concentration. The as-obtained NCC rod-like structure demonstrated great performance with a huge specific capacity of 657 C g−1 at 1 A g−1, preeminent rate capability of 87.7% retention, the current density varying to 10 A g−1, and great cycling stability of 76.7% of its original value through 3500 cycles, which is superior to the properties of bare Ni3S2. The result presents a facile, general, viable strategy to constructing a high-performance material for the supercapacitor applications.

Cellulose-Derived Carbon Microfiber Mesh for Binder-Free Lithium—Sulfur Batteries

2020 ◽  
Vol 20 (9) ◽  
pp. 5629-5635
Author(s):  
Shiqi Li ◽  
Zhiqun Cheng ◽  
Tian Xie ◽  
Zhihua Dong ◽  
Guohua Liu
Keyword(s):  
High Performance ◽  
Carbon Materials ◽  
Electronic Conductivity ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Sulfide ◽  
Lithium Sulfur Batteries ◽  
Binder Free ◽  
Carbon Microfiber ◽  
Lithium Sulfur

The practical application of lithium–sulfur batteries (LSBs) has been impeded by several chronic problems related to the insulating nature of sulfur and lithium sulfide, in addition to the dissolution and diffusion of lithium polysulfides. In view of these problems, a large variety of carbonaceous materials have been employed to enhance the electronic conductivity of the cathode and/or sequester lithium polysulfides within conductive matrixes. Although they may exhibit impressive electrochemical performance, the fabrication of most carbon materials involves costly precursors and complicated procedures. Waste paper—the main constituent of municipal waste—is composed of carbohydrates, and can be an ideal precursor for carbon materials. Herein, carbon microfiber meshes (CMFMs) obtained by the pyrolysis of common filter paper in argon (A-CMFM) or ammonia (N-CMFM) were used to form sulfur cathodes. Compared with LSBs based on A-CMFM, those based on N-CMFM demonstrated higher specific capacity and better rate capability, with a capacity of 650 mA h g−1 at 0.2 C and 550 mA h g−1 at 0.5 C. This was owing to the strong immobilization of lithium polysulfides resulting from the heteroatom doping and hydrophilicity of N-CMFM. The results indicate that cellulose paper-derived carbon is a promising candidate for application in high-performance LSBs.

Fabrication of MnFe2O4 and MnCO3 Nanoparticles Anchored on Amorphous Carbon-Coated Carbon Nanotubes for High-Performance Lithium Batteries and Supercapacitors

NANO ◽  
2018 ◽  
Vol 13 (05) ◽  
pp. 1850050 ◽  
Author(s):  
Quanwu Wen ◽  
Shaohua Zhang ◽  
Mingwei Sun ◽  
Rencheng Jin
Keyword(s):  
Carbon Nanotubes ◽  
Amorphous Carbon ◽  
Transition Metal Oxides ◽  
Lithium Batteries ◽  
High Performance ◽  
Specific Capacity ◽  
New Strategy ◽  
Carbon Coated ◽  
High Theoretical Capacity ◽  
Coated Carbon

Transition metal oxides as Li-ion batteries (LIBs) anodes have attracted much attention because of their high theoretical capacity. However, the large volume change and low electrical conductivity still hinder their application in LIBs. In this work, a new strategy is proposed to enhance the electrochemical performance by anchoring ultrafine MnFe2O4 and MnCO3 ([Formula: see text][Formula: see text]nm) on amorphous carbon-coated carbon nanotubes. Benefiting from the unique structure, the electrode displays excellent cyclability with a reversible specific capacity of 1012[Formula: see text]mAh g[Formula: see text] at 0.1[Formula: see text]A g[Formula: see text] after 100 cycles and outstanding rate performance accompanied by a high specific capacity of 568[Formula: see text]mAh g[Formula: see text] at 5[Formula: see text]A g[Formula: see text] as anode for lithium batteries. When evaluated as supercapacitors, the electrode delivers the specific capacitance of 588.9[Formula: see text]F g[Formula: see text] at a current density of 1[Formula: see text]A g[Formula: see text] and maintains the capacitance retention 94.7% after 4000 cycles at 5[Formula: see text]A g[Formula: see text].

scholarly journals One-Pot Synthesis of α-Fe2O3 Nanospindles as High-Performance Lithium-Ion Battery Anodes

NANO ◽  
2018 ◽  
Vol 13 (02) ◽  
pp. 1850018 ◽  
Author(s):  
Yanhua Ding ◽  
Bing Liu ◽  
Rongsheng Cai ◽  
Tuo Xin ◽  
Chen Li ◽  
...  
Keyword(s):  
Anode Materials ◽  
Polyvinylidene Fluoride ◽  
High Performance ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
One Pot ◽  
Structure Directing Agent ◽  
Uniform Size ◽  
Scanning Transmission

Hematite nanospindles with a uniform size of [Formula: see text]270[Formula: see text]nm in length and [Formula: see text]90[Formula: see text]nm in width are prepared using a facile one-step hydrothermal method. Polyvinylpyrrolidone (PVP) serves as a structure-directing agent to control the primary morphology and aggregations. When evaluated as anode materials for lithium-ion batteries (LIBs), the electrode of sodium alginate (SA) binder exhibits a much better electrochemical performance than that with the polyvinylidene fluoride (PVDF) binder. Remarkably, the electrode using SA binder can deliver a high reversible specific capacity of 979[Formula: see text]mAh[Formula: see text]g[Formula: see text] after 50 cycles and prominent rate capability. The microstructural evolution of the nanospindles after the electrochemical cycling is investigated by scanning transmission electron microscopy (STEM). Our results may provide important mechanistic insights for the design of nanostructured anode materials for LIBs.

Interface-engineered hematite nanocones as binder-free electrodes for high-performance lithium-ion batteries

2018 ◽  
Vol 6 (28) ◽  
pp. 13968-13974 ◽  
Author(s):  
Lei Wang ◽  
Kun Liang ◽  
Guanzhi Wang ◽  
Yang Yang
Keyword(s):  
Electrochemical Performance ◽  
High Performance ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Specific Capacity ◽  
One Dimensional ◽  
Binder Free ◽  
Enhanced Electrochemical Performance ◽  
Good Rate Capability

One-dimensional α-Fe2O3 nanocone arrays exhibited an enhanced electrochemical performance with high specific capacity, good rate capability, and excellent cyclability.

A novel binder free high performance Y2Zr2O7/MnS nanocomposite electrode for supercapacitor applications

2021 ◽  
Vol 37 ◽  
pp. 102505
Author(s):  
Nasreen Bibi ◽  
Iqbal Ahmad ◽  
Muhmmad Mubeen ◽  
Muhammad Naeem Ashiq ◽  
Shaowei Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
Binder Free ◽  
Supercapacitor Applications

In situ preparation of MgCo2O4 nanosheets on Ni-foam as a binder-free electrode for high performance hybrid supercapacitors

2018 ◽  
Vol 47 (19) ◽  
pp. 6722-6728 ◽  
Author(s):  
Subbukalai Vijayakumar ◽  
Sadayappan Nagamuthu ◽  
Kwang-Sun Ryu
Keyword(s):  
High Performance ◽  
Specific Capacity ◽  
Ni Foam ◽  
Hybrid Supercapacitors ◽  
In Situ Preparation ◽  
Binder Free

MgCo2O4 nanosheets grown on Ni-foam exhibited a maximum specific capacity of 947 C g−1 at 2 A g−1.

Copper molybdenum sulfide anchored nickel foam: a high performance, binder-free, negative electrode for supercapacitors

Nanoscale ◽  
2018 ◽  
Vol 10 (29) ◽  
pp. 13883-13888 ◽  
Author(s):  
Surjit Sahoo ◽  
Karthikeyan Krishnamoorthy ◽  
Parthiban Pazhamalai ◽  
Sang -Jae Kim
Keyword(s):  
High Performance ◽  
Nickel Foam ◽  
Negative Electrode ◽  
Molybdenum Sulfide ◽  
Binder Free ◽  
Supercapacitor Applications

A novel negative electrode based on copper molybdenum sulfide (CMS) nanostructures prepared through a facile method for supercapacitor applications.

scholarly journals Reduced Graphene Oxides Decorated NiSe Nanoparticles as High Performance Electrodes for Na/Li Storage

Materials ◽  
2019 ◽  
Vol 12 (22) ◽  
pp. 3709 ◽  
Author(s):  
Yan Liu ◽  
Xianshui Wang
Keyword(s):  
Electrochemical Performance ◽  
High Performance ◽  
Specific Capacity ◽  
Reversible Capacity ◽  
Graphene Oxides ◽  
One Pot ◽  
Reduced Graphene ◽  
Li Ion ◽  
Enhanced Electrochemical Performance ◽  
Li Storage

A facile, one-pot hydrothermal method was used to synthesize Nickel selenide (NiSe) nanoparticles decorated with reduced graphene oxide nanosheets (rGO), denoted as NiSe/rGO. The NiSe/rGO exhibits good electrochemical performance when tested as anodes for Na-ion batteries (SIBs) and Li-ion batteries (LIBs). An initial reversible capacity of 423 mA h g−1 is achieved for SIBs with excellent cyclability (378 mA h g−1 for 50th cycle at 0.05 A g−1). As anode for LIBs, it delivers a remarkable reversible specific capacity of 1125 mA h g−1 at 0.05 A g−1. The enhanced electrochemical performance of NiSe/rGO nanocomposites can be ascribed to the synergic effects between NiSe nanoparticles and rGO, which provide high conductivity and large specific surface area, indicating NiSe/rGO as very promising Na/Li storage materials.

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