Significantly improved conductivity of spinel Co3O4 porous nanowires partially substituted by Sn in tetrahedral sites for high-performance quasi-solid-state supercapacitors

2021 ◽  
Vol 9 (11) ◽  
pp. 7005-7017
Author(s):  
Yunjian Chen ◽  
Jia Zhu ◽  
Ni Wang ◽  
Huanyu Cheng ◽  
Xianzhong Tang ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Solid State ◽  
Energy Density ◽  
Electrochemical Performance ◽  
High Performance ◽  
High Energy ◽  
High Energy Density ◽  
Partial Substitution ◽  
Tetrahedral Sites ◽  
Excellent Electrochemical Performance

The partial substitution of Sn in spinel-structured Co3O4 exhibits excellent electrochemical performance, including good electrical conductivity, high energy density, power density and cycling retention, as a positive electrode for supercapacitors.

Achieving high rate and high energy density in an all-solid-state flexible asymmetric pseudocapacitor through the synergistic design of binder-free 3D ZnCo2O4 nano polyhedra and 2D layered Ti3C2Tx-MXenes

2019 ◽  
Vol 7 (42) ◽  
pp. 24543-24556 ◽  
Author(s):  
Muhammad Sufyan Javed ◽  
Hang Lei ◽  
Hidayat Ullah Shah ◽  
Sumreen Asim ◽  
Rizwan Raza ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Electrochemical Performance ◽  
High Energy ◽  
High Rate ◽  
High Energy Density ◽  
Excellent Electrochemical Performance ◽  
Binder Free ◽  
High Flexibility ◽  
Pva Hydrogel

Flexible ZCO‖MXene-ASC exhibits excellent electrochemical performance in a KOH/PVA hydrogel electrolyte with outstanding cycling stability in an enlarged potential window of 0.0–1.6 V with high flexibility.

A high performance all-vanadate-based Li-ion full cell

2021 ◽  
Vol 9 (16) ◽  
pp. 10345-10353
Author(s):  
Jie Xu ◽  
Dongmei Zhang ◽  
Zongping Zhang ◽  
Shibing Ni
Keyword(s):  
Energy Density ◽  
Electrochemical Performance ◽  
High Performance ◽  
High Energy ◽  
High Energy Density ◽  
Porous Microspheres ◽  
Full Cell ◽  
Excellent Electrochemical Performance ◽  
Li Ion ◽  
First Time

An all-vanadate-based Li-ion full cell with high energy density and long lifespan is constructed for the first time based on the design of Li3VO4/N doped C porous microspheres with excellent electrochemical performance.

scholarly journals Fabrication of Hierarchical NiMoO4/NiMoO4 Nanoflowers on Highly Conductive Flexible Nickel Foam Substrate as a Capacitive Electrode Material for Supercapacitors with Enhanced Electrochemical Performance

Energies ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 1143 ◽  
Author(s):  
Anil Yedluri ◽  
Tarugu Anitha ◽  
Hee-Je Kim
Keyword(s):  
Energy Density ◽  
Electrochemical Performance ◽  
Specific Capacitance ◽  
Electrode Material ◽  
High Performance ◽  
Nickel Foam ◽  
High Specific Capacitance ◽  
High Energy ◽  
High Energy Density ◽  
Charge Discharge

Hierarchical NiMoO4/NiMoO4 nanoflowers were fabricated on highly conductive flexible nickel foam (NF) substrates using a facile hydrothermal method to achieve rapid charge-discharge ability, high energy density, long cycling lifespan, and higher flexibility for high-performance supercapacitor electrode materials. The synthesized composite electrode material, NF/NiMoO4/NiMoO4 with a nanoball-like NF/NiMoO4 structure on a NiMoO4 surface over a NF substrate, formed a three-dimensional interconnected porous network for high-performance electrodes. The novel NF/NiMoO4/NiMoO4 nanoflowers not only enhanced the large surface area and increased the electrochemical activity, but also provided an enhanced rapid ion diffusion path and reduced the charge transfer resistance of the entire electrode effectively. The NF/NiMoO4/NiMoO4 composite exhibited significantly improved supercapacitor performance in terms of a sustained cycling life, high specific capacitance, rapid charge-discharge capability, high energy density, and good rate capability. Electrochemical analysis of the NF/NiMoO4/NiMoO4 nanoflowers fabricated on the NF substrate revealed ultra-high electrochemical performance with a high specific capacitance of 2121 F g−1 at 12 mA g−1 in a 3 M KOH electrolyte and 98.7% capacitance retention after 3000 cycles at 14 mA g−1. This performance was superior to the NF/NiMoO4 nanoball electrode (1672 F g−1 at 12 mA g−1 and capacitance retention 93.4% cycles). Most importantly, the SC (NF/NiMoO4/NiMoO4) device displayed a maximum energy density of 47.13 W h kg−1, which was significantly higher than that of NF/NiMoO4 (37.1 W h kg−1). Overall, the NF/NiMoO4/NiMoO4 composite is a suitable material for supercapacitor applications.

Bifunctional iron disulfide nanoellipsoids for high energy density supercapacitor and electrocatalytic oxygen evolution applications

2019 ◽  
Vol 6 (3) ◽  
pp. 659-670 ◽  
Author(s):  
Zhiqin Sun ◽  
Xue Yang ◽  
Huiming Lin ◽  
Feng Zhang ◽  
Qian Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
Electrochemical Performance ◽  
Oxygen Evolution ◽  
High Energy ◽  
High Energy Density ◽  
Microwave Assisted ◽  
Iron Disulfide ◽  
Excellent Electrochemical Performance ◽  
Microwave Assisted Method

FeS2, prepared using a rapid microwave assisted method, exhibits excellent electrochemical performance for supercapacitor and OER applications.

One-step electrodeposited MoS2@Ni-mesh electrode for flexible and transparent asymmetric solid-state supercapacitors

2020 ◽  
Vol 8 (45) ◽  
pp. 24040-24052
Author(s):  
Bobby Singh Soram ◽  
Jiu Yi Dai ◽  
Ibomcha Singh Thangjam ◽  
Nam Hoon Kim ◽  
Joong Hee Lee
Keyword(s):  
Solid State ◽  
Energy Density ◽  
High Performance ◽  
Negative Electrode ◽  
High Energy ◽  
High Energy Density ◽  
One Step

One-step electrodeposited MoS2@Ni-mesh as a high-performance negative electrode; a high energy density flexible and transparent asymmetric solid-state supercapacitor is fabricated.

High-performance quasi-solid-state asymmetric supercapacitors based on BiMn2O5 nanoparticles and redox-additive electrolytes

2019 ◽  
Vol 6 (8) ◽  
pp. 2061-2070 ◽  
Author(s):  
Jai Bhagwan ◽  
Bhimanaboina Ramulu ◽  
Jae Su Yu
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
Energy Density ◽  
High Performance ◽  
High Energy ◽  
High Energy Density ◽  
Asymmetric Supercapacitors ◽  
Storage Performance

The investigation of nanomaterials with improved energy storage performance is essential in the development of high energy density supercapacitors.

scholarly journals Enhanced Roles of Carbon Architectures in High-Performance Lithium-Ion Batteries

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Lu Wang ◽  
Junwei Han ◽  
Debin Kong ◽  
Ying Tao ◽  
Quan-Hong Yang
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
High Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
High Mass

Abstract Lithium-ion batteries (LIBs), which are high-energy-density and low-safety-risk secondary batteries, are underpinned to the rise in electrochemical energy storage devices that satisfy the urgent demands of the global energy storage market. With the aim of achieving high energy density and fast-charging performance, the exploitation of simple and low-cost approaches for the production of high capacity, high density, high mass loading, and kinetically ion-accessible electrodes that maximize charge storage and transport in LIBs, is a critical need. Toward the construction of high-performance electrodes, carbons are promisingly used in the enhanced roles of active materials, electrochemical reaction frameworks for high-capacity noncarbons, and lightweight current collectors. Here, we review recent advances in the carbon engineering of electrodes for excellent electrochemical performance and structural stability, which is enabled by assembled carbon architectures that guarantee sufficient charge delivery and volume fluctuation buffering inside the electrode during cycling. Some specific feasible assembly methods, synergism between structural design components of carbon assemblies, and electrochemical performance enhancement are highlighted. The precise design of carbon cages by the assembly of graphene units is potentially useful for the controlled preparation of high-capacity carbon-caged noncarbon anodes with volumetric capacities over 2100 mAh cm−3. Finally, insights are given on the prospects and challenges for designing carbon architectures for practical LIBs that simultaneously provide high energy densities (both gravimetric and volumetric) and high rate performance.

Polyaniline-based carbon nanospheres and redox mediator doped robust gel films lead to high performance foldable solid-state supercapacitors

2017 ◽  
Vol 41 (17) ◽  
pp. 9024-9032 ◽  
Author(s):  
Enke Feng ◽  
Hui Peng ◽  
Zhiguo Zhang ◽  
Jindan Li ◽  
Ziqiang Lei
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
Energy Density ◽  
High Performance ◽  
High Energy ◽  
High Energy Density ◽  
Storage Device ◽  
Energy Storage Device ◽  
Carbon Nanospheres ◽  
Device Applications

As-fabricated foldable solid-state supercapacitors are suitable for highly fold-tolerant high-energy-density energy storage device applications.

Titanium carbide sheet based high performance wire type solid state supercapacitors

2017 ◽  
Vol 5 (12) ◽  
pp. 5726-5736 ◽  
Author(s):  
Karthikeyan Krishnamoorthy ◽  
Parthiban Pazhamalai ◽  
Surjit Sahoo ◽  
Sang-Jae Kim
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Titanium Carbide ◽  
High Performance ◽  
High Energy ◽  
High Energy Density

Wire type supercapacitors fabricated using titanium carbide sheets derived from Ti2AlC provide a high energy density of 210 nW h cm−1.

Sign in / Sign up

Export Citation Format

Share Document