High energy density hybrid supercapacitors derived from novel Ni3Se2 nanowires in situ constructed on porous nickel foam

2021 ◽  
Author(s):  
Wei Li ◽  
Tianqi Chen ◽  
Ao Li ◽  
Peng Shi ◽  
Ming Wu ◽  
...  
Keyword(s):  
Reaction Time ◽  
Hydrothermal Reaction ◽  
Nickel Foam ◽  
High Energy ◽  
High Energy Density ◽  
Porous Nickel ◽  
Hybrid Supercapacitors ◽  
Storage Performance ◽  
One Step

A novel Ni3Se2 nanowires are synthesized in situ on the surface of nickel foam through a one-step hydrothermal reaction under the reaction time of 24 h, and it demonstrates excellent energy storage performance for hybrid supercapacitors.

scholarly journals In-Situ Annealed Ti3C2Tx MXene Based All-Solid-State Flexible Zn-Ion Hybrid Micro Supercapacitor Array with Enhanced Stability

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
La Li ◽  
Weijia Liu ◽  
Kai Jiang ◽  
Di Chen ◽  
Fengyu Qu ◽  
...  
Keyword(s):  
High Energy ◽  
High Rate ◽  
High Energy Density ◽  
Electrochemical Performances ◽  
Integrated Electronics ◽  
Long Term Stability ◽  
Hybrid Supercapacitors ◽  
Portable Electronics

AbstractZn-ion hybrid supercapacitors (SCs) are considered as promising energy storage owing to their high energy density compared to traditional SCs. How to realize the miniaturization, patterning, and flexibility of the Zn-ion SCs without affecting the electrochemical performances has special meanings for expanding their applications in wearable integrated electronics. Ti3C2Tx cathode with outstanding conductivity, unique lamellar structure and good mechanical flexibility has been demonstrated tremendous potential in the design of Zn-ion SCs, but achieving long cycling stability and high rate stability is still big challenges. Here, we proposed a facile laser writing approach to fabricate patterned Ti3C2Tx-based Zn-ion micro-supercapacitors (MSCs), followed by the in-situ anneal treatment of the assembled MSCs to improve the long-term stability, which exhibits 80% of the capacitance retention even after 50,000 charge/discharge cycles and superior rate stability. The influence of the cathode thickness on the electrochemical performance of the MSCs is also studied. When the thickness reaches 0.851 µm the maximum areal capacitance of 72.02 mF cm−2 at scan rate of 10 mV s−1, which is 1.77 times higher than that with a thickness of 0.329 µm (35.6 mF cm−2). Moreover, the fabricated Ti3C2Tx based Zn-ion MSCs have excellent flexibility, a digital timer can be driven by the single device even under bending state, a flexible LED displayer of “TiC” logo also can be easily lighted by the MSC arrays under twisting, crimping, and winding conditions, demonstrating the scalable fabrication and application of the fabricated MSCs in portable electronics.

Rapid in situ growth of β-Ni(OH)2 nanosheet arrays on nickel foam as an integrated electrode for supercapacitors exhibiting high energy density

2020 ◽  
Vol 49 (15) ◽  
pp. 4956-4966 ◽  
Author(s):  
Jingbo Li ◽  
Yu Liu ◽  
Wei Cao ◽  
Nan Chen
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Nickel Foam ◽  
High Energy ◽  
High Energy Density ◽  
In Situ Growth ◽  
Nanosheet Arrays

A rapid in situ method was employed to synthesize the β-Ni(OH)2@NF integrated electrode for a high performance ASC device.

3D hierarchical porous CuS flower-dispersed CNT arrays on nickel foam as a binder-free electrode for supercapacitors

2019 ◽  
Vol 43 (27) ◽  
pp. 10906-10914 ◽  
Author(s):  
Yiling Quan ◽  
Mingyuan Zhang ◽  
Guoxiang Wang ◽  
Lu Lu ◽  
Zhixin Wang ◽  
...  
Keyword(s):  
Solvothermal Method ◽  
Nickel Foam ◽  
High Energy ◽  
High Energy Density ◽  
Electrochemical Supercapacitors ◽  
Porous Copper ◽  
Hierarchical Porous ◽  
One Step ◽  
Binder Free ◽  
Cnt Arrays

To fabricate excellent electrochemical supercapacitors, 3D porous copper sulfide flower dispersed carbon nanotube on nickel foam (CuS–CNTs@NF) with high energy density and stability were synthesized via a simple one-step solvothermal method.

Hierarchically Porous Nickel Oxide Nanosheets Grown on Nickel Foam Prepared by One-Step In Situ Anodization for High-Performance Supercapacitors

2014 ◽  
Vol 9 (6) ◽  
pp. 1579-1585 ◽  
Author(s):  
Li Yang ◽  
Lei Qian ◽  
Xianqing Tian ◽  
Jing Li ◽  
Jianyuan Dai ◽  
...  
Keyword(s):  
Nickel Oxide ◽  
High Performance ◽  
Nickel Foam ◽  
Porous Nickel ◽  
Hierarchically Porous ◽  
One Step

scholarly journals Facile In Situ Synthesis of Co(OH)2–Ni3S2 Nanowires on Ni Foam for Use in High-Energy-Density Supercapacitors

Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 34
Author(s):  
Xuan Liang Wang ◽  
En Mei Jin ◽  
Jiasheng Chen ◽  
Parthasarathi Bandyopadhyay ◽  
Bo Jin ◽  
...  
Keyword(s):  
Energy Density ◽  
Electrochemical Properties ◽  
Current Density ◽  
Hydrothermal Reaction ◽  
Active Material ◽  
High Energy ◽  
High Energy Density ◽  
Ni Foam ◽  
One Pot

Ni3S2 nanowires were synthesized in situ using a one-pot hydrothermal reaction on Ni foam (NF) for use in supercapacitors as a positive electrode, and various contents (0.3−0.6 mmol) of Co(OH)2 shells were coated onto the surfaces of the Ni3S2 nanowire cores to improve the electrochemical properties. The Ni3S2 nanowires were uniformly formed on the smooth NF surface, and the Co(OH)2 shell was formed on the Ni3S2 nanowire surface. By direct NF participation as a reactant without adding any other Ni source, Ni3S2 was formed more closely to the NF surface, and the Co(OH)2 shell suppressed the loss of active material during charging–discharging, yielding excellent electrochemical properties. The Co(OH)2–Ni3S2/Ni electrode produced using 0.5 mmol Co(OH)2 (Co0.5–Ni3S2/Ni) exhibited a high specific capacitance of 1837 F g−1 (16.07 F cm−2) at a current density of 5 mA cm−2, and maintained a capacitance of 583 F g−1 (16.07 F cm−2) at a much higher current density of 50 mA cm−2. An asymmetric supercapacitor (ASC) with Co(OH)2–Ni3S2 and active carbon displayed a high-power density of 1036 kW kg−1 at an energy density of 43 W h kg−1 with good cycling stability, indicating its suitability for use in energy storage applications. Thus, the newly developed core–shell structure, Co(OH)2–Ni3S2, was shown to be efficient at improving the electrochemical performance.

In-situ synthesis of KCu7S4 nanowires array on nickel foam for high performance supercapacitor

2020 ◽  
pp. 2151005
Author(s):  
Yonggang Xue ◽  
Yu Zhang ◽  
Rui Yang ◽  
Kaiyou Zhang ◽  
Aimiao Qin ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Electrode Material ◽  
Active Sites ◽  
Nickel Foam ◽  
Nanowire Array ◽  
High Specific Capacitance ◽  
High Energy ◽  
High Energy Density ◽  
Synthesis Process

An amazing KCu7S4 nanowire array structure in-situ grown on Ni foam skeleton was fabricated. The morphology and size of KCu7S4 nanowire array can be adjusted by temperature and additive (ethylene glycol). The unique structure and suitable size of KCu7S4 nanowire array greatly facilitate the charge transport of the electrode material and electrolyte, providing more active sites for redox reaction, which perfectly demonstrates the excellent electrochemical performance of the KCu7S4 electrode material. The KCu7S4 nanowire array with adding ethylene glycol in the synthesis process exhibits high specific capacitance of 2.57 F cm[Formula: see text] (807 F g[Formula: see text]) at a current density of 3 mA cm[Formula: see text], good cycling stability with 80% retention at 10 mA cm[Formula: see text] for 1000 cycles and high energy density of 40.55 Wh kg[Formula: see text] at a power density of 185 W kg[Formula: see text]. Moreover, the investigation demonstrates the great potential application of KCu7S4 nanowire array in supercapacitors.

Potassium Pre-Inserted K1.04Mn8O16 Cathode Materials for Aqueous Li-Ion and Na-Ion Hybrid Capacitors

2019 ◽  
Author(s):  
Yamin Zhang ◽  
Lina Chen ◽  
Chongyang Hao ◽  
Xiaowen Zheng ◽  
Yixuan Guo ◽  
...  
Keyword(s):  
Cycling Performance ◽  
High Energy ◽  
High Energy Density ◽  
Potassium Ions ◽  
Tunnel Structure ◽  
Hybrid Supercapacitor ◽  
Hybrid Supercapacitors ◽  
Li Ion ◽  
Power Densities ◽  
Hybrid Capacitors

For the applications of aqueous Li-ion hybrid capacitors and Na-ion hybrid capacitors, potassium ions are pre-inserted into MnO<sub>2</sub> tunnel structure, the as-prepared K<sub>1.04</sub>Mn<sub>8</sub>O<sub>16</sub> materials consist of <a>nanoparticles</a> and nanorods were prepared by facile high-temperature solid-state reaction. <a></a>The as-prepared materials were well studied andthey show outstanding electrochemical behavior. We assembled hybrid supercapacitors with commercial activated carbon (YEC-8A) as anode and K<sub>1.04</sub>Mn<sub>8</sub>O<sub>16 </sub>as cathode. It has high energy densities and power densities. Li-ion capacitors reach a high energy density of 127.61 Wh kg<sup>-1 </sup>at the power density of 99.86 W kg<sup>-1</sup> and Na-ion capacitor obtains 170.96 Wh kg<sup>-1 </sup>at 133.79 W kg<sup>-1</sup>. In addition, the <a>hybrid supercapacitor</a>s demonstrate excellent cycling performance which maintain 97 % capacitance retention for Li-ion capacitor and 85 % for Na-ion capacitor after 10,000 cycles.

scholarly journals Research Progress toward Room Temperature Sodium Sulfur Batteries: A Review

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1535
Author(s):  
Yanjie Wang ◽  
Yingjie Zhang ◽  
Hongyu Cheng ◽  
Zhicong Ni ◽  
Ying Wang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Room Temperature ◽  
High Energy ◽  
Safety Performance ◽  
High Energy Density ◽  
Research Progress ◽  
Storage Performance ◽  
Sulfur Battery ◽  
Sodium Sulfur Battery ◽  
Sodium Sulfur

Lithium metal batteries have achieved large-scale application, but still have limitations such as poor safety performance and high cost, and limited lithium resources limit the production of lithium batteries. The construction of these devices is also hampered by limited lithium supplies. Therefore, it is particularly important to find alternative metals for lithium replacement. Sodium has the properties of rich in content, low cost and ability to provide high voltage, which makes it an ideal substitute for lithium. Sulfur-based materials have attributes of high energy density, high theoretical specific capacity and are easily oxidized. They may be used as cathodes matched with sodium anodes to form a sodium-sulfur battery. Traditional sodium-sulfur batteries are used at a temperature of about 300 °C. In order to solve problems associated with flammability, explosiveness and energy loss caused by high-temperature use conditions, most research is now focused on the development of room temperature sodium-sulfur batteries. Regardless of safety performance or energy storage performance, room temperature sodium-sulfur batteries have great potential as next-generation secondary batteries. This article summarizes the working principle and existing problems for room temperature sodium-sulfur battery, and summarizes the methods necessary to solve key scientific problems to improve the comprehensive energy storage performance of sodium-sulfur battery from four aspects: cathode, anode, electrolyte and separator.

In situ formation of highly exposed NiPS3 nanosheets on nickel foam as an efficient 3D electrocatalyst for overall water splitting

2021 ◽  
Author(s):  
Liang Fang ◽  
Yanping Xie ◽  
Peiyin Guo ◽  
Jingpei Zhu ◽  
Shuhui Xiao ◽  
...  
Keyword(s):  
Water Splitting ◽  
Nickel Foam ◽  
Chemical Vapor ◽  
Bifunctional Catalyst ◽  
Vapor Transport ◽  
Chemical Vapor Transport ◽  
Overall Water Splitting ◽  
One Step ◽  
Transport Method

Vertical NiPS3 nanosheets in situ grown on conducting nickel foam were fabricated by a facile one-step chemical vapor transport method and used as an efficient bifunctional catalyst for overall water splitting.

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