scholarly journals A Review on Cutting Edge Technologies of Silicon-Based Supercapacitors

2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
Zhong Wu ◽  
Xianfeng Zhang ◽  
Xiaoqi Jin ◽  
Tong Li ◽  
Jinlong Ge ◽  
...  
Keyword(s):  
Electrode Materials ◽  
Three Dimensional ◽  
Rate Capability ◽  
Material Design ◽  
Supercapacitor Application ◽  
Potential Electrode ◽  
Synthesis Properties ◽  
Energy Conversion And Storage ◽  
Silicon Structures ◽  
Silicon Based

Despite Si-based materials and their derivatives have recently emerged as potential electrode materials in advanced energy conversion and storage applications, a review article has not been reported hitherto for Si-based supercapacitors. In this review, the representative progresses of Si-based materials have been illustrated including synthesis, properties, surface modification, and electrochemical properties. A variety of nanomaterials are presented regarding the electrode material design and booming device constructions. Effective strategies for the preparation of Si-based materials and their derivatives are summarized especially including silicon/silicon carbide nanowires, silicon substrates, silicon particles, three-dimensional silicon structures, and silicon-based doping materials. Meanwhile, the overall behaviors in supercapacitor application have been illustrated in terms of specific capacitance, rate capability, cycling life, and energy density. Furthermore, large-voltage microsupercapacitors are outlined for next-generation integration devices.

scholarly journals Three-Dimensional Carbon-Coated LiFePO4 Cathode with Improved Li-Ion Battery Performance

Coatings ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1137
Author(s):  
Can Wang ◽  
Xunlong Yuan ◽  
Huiyun Tan ◽  
Shuofeng Jian ◽  
Ziting Ma ◽  
...  
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Three Dimensional ◽  
High Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Economic Benefits ◽  
Synthesis Process ◽  
Carbon Coated

LiFePO4 (LFPO)has great potential as the cathode material for lithium-ion batteries; it has a high theoretical capacity (170 m·A·h·g−1), high safety, low toxicity and good economic benefits. However, low conductivity and a low diffusion rate inhibit its future development. To overcome these weaknesses, three-dimensional carbon-coated LiFePO4 that incorporates a high capacity, superior conductivity and low volume expansion enables faster electron transport channels. The use of Cetyltrimethyl Ammonium Bromid (CTAB) modification only requires a simple water bath and sintering, without the need to add a carbon source in the LFPO synthesis process. In this way, the electrode shows excellent reversible capacity, as high as 159.8 m·A·h·g−1 at 2 C, superior rate capability with 97.3 m·A·h·g−1at 5 C and good cycling ability, preserving ~84.2% capacity after 500 cycles. By increasing the ion transport rate and enhancing the structural stability of LFPO nanoparticles, the LFPO-positive electrode achieves excellent initial capacity and cycle life through cost-effective and easy-to-implement carbon coating. This simple three-dimensional carbon-coated LiFePO4 provides a new and simple idea for obtaining comprehensive and high-performance electrode materials in the field of lithium cathode materials.

Facile synthesis of nickel network supported three-dimensional graphene gel as a lightweight and binder-free electrode for high rate performance supercapacitor application

Nanoscale ◽  
2014 ◽  
Vol 6 (4) ◽  
pp. 2426-2433 ◽  
Author(s):  
Haifu Huang ◽  
Lianqiang Xu ◽  
Yanmei Tang ◽  
Shaolong Tang ◽  
Youwei Du
Keyword(s):  
Three Dimensional ◽  
Rate Capability ◽  
High Rate ◽  
High Rate Capability ◽  
Facile Synthesis ◽  
Supercapacitor Application ◽  
3D Graphene ◽  
Binder Free ◽  
High Rate Performance ◽  
Supercapacitor Applications

A Ni network supported 3d graphene electrode was synthesized by a nickel etching process, and exhibited high rate capability for supercapacitor applications.

scholarly journals 3D N,O-Codoped Egg-Box-Like Carbons with Tuned Channels for High Areal Capacitance Supercapacitors

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Feng Wei ◽  
Xiaojun He ◽  
Lianbo Ma ◽  
Hanfang Zhang ◽  
Nan Xiao ◽  
...  
Keyword(s):  
Electrode Materials ◽  
Three Dimensional ◽  
Rate Capability ◽  
Energy Storage Devices ◽  
Electron Conduction ◽  
Storage Devices ◽  
Areal Capacitance ◽  
Free Process ◽  
Effective Contact ◽  
Fast Transport

AbstractFunctional carbonaceous materials for supercapacitors (SCs) without using acid for post-treatment remain a substantial challenge. In this paper, we present a less harmful strategy for preparing three-dimensional (3D) N,O-codoped egg-box-like carbons (EBCs). The as-prepared EBCs with opened pores provide plentiful channels for ion fast transport, ensure the effective contact of EBCs electrodes and electrolytes, and enhance the electron conduction. The nitrogen and oxygen atoms doped in EBCs improve the surface wettability of EBC electrodes and provide the pseudocapacitance. Consequently, the EBCs display a prominent areal capacitance of 39.8 μF cm−2 (340 F g−1) at 0.106 mA cm−2 in 6 M KOH electrolyte. The EBC-based symmetric SC manifests a high areal capacitance to 27.6 μF cm−2 (236 F g−1) at 0.1075 mA cm−2, a good rate capability of 18.8 μF cm−2 (160 F g−1) at 215 mA cm−2 and a long-term cycle stability with only 1.9% decay after 50,000 cycles in aqueous electrolyte. Impressively, even in all-solid-state SC, EBC electrode shows a high areal capacitance of 25.0 μF cm−2 (214 F g−1) and energy density of 0.0233 mWh cm−2. This work provides an acid-free process to prepare electrode materials from industrial by-products for advanced energy storage devices.

Rationally Designed Carbon Fiber@NiCo2O4@Polypyrrole Core–Shell Nanowire Array for High-Performance Supercapacitor Electrodes

NANO ◽  
2016 ◽  
Vol 11 (02) ◽  
pp. 1650015 ◽  
Author(s):  
Tingting Chen ◽  
Yong Fan ◽  
Guangning Wang ◽  
Jing Zhang ◽  
Huixin Chuo ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Current Density ◽  
High Performance ◽  
Electrode Materials ◽  
High Current Density ◽  
Nanowire Array ◽  
Three Dimensional ◽  
Rate Capability ◽  
Electrochemical Performances ◽  
Ion Diffusion

The composite supercapacitor electrodes were rationally fabricated by facile electrochemical deposition of polypyrrole (PPy) on NiCo2O4 nanowire arrays which were grown radially on carbon fiber (CF). When used as electrodes in supercapacitors, the composite nanostructures demonstrated prominent electrochemical performances with a high areal capacitance (1.44[Formula: see text]F/cm2 at a current density of 2[Formula: see text]mA/cm2), a good rate capability (80.5% when the current density increases from 2[Formula: see text]mA/cm2 to 20[Formula: see text]mA/cm2), and a good cycling ability (85% of the initial specific capacitance remained after 5000 cycles at a high current density of 10[Formula: see text]mA/cm2). The excellent electrochemical performance of NiCo2O4@PPy nanostructures can be mainly ascribed to the good electrical conductivity of PPy, the enhanced adherent force between electrode materials and CF to hold the electrode fragments together by means of NiCo2O4 nanowires, the short ion diffusion pathway in ordered porous NiCo2O4 nanowires and the three-dimensional nanostructures.

V2O3 nanofoam@activated carbon composites as electrode materials of supercapacitors

2017 ◽  
Vol 10 (06) ◽  
pp. 1750077 ◽  
Author(s):  
Xun Zhang ◽  
Zhonglin Bu ◽  
Rui Xu ◽  
Bing Xie ◽  
Hong-Yi Li
Keyword(s):  
Activated Carbon ◽  
Specific Capacitance ◽  
High Performance ◽  
Electrode Materials ◽  
Low Cost ◽  
Rate Capability ◽  
Mesoporous Structure ◽  
Carbon Composites ◽  
Supercapacitor Application ◽  
Ion Intercalation

Electrode materials with high performance and low cost are demanding in supercapacitor applications. Novel V2O3 nanofoam@activated carbon composites have been prepared simply and cost-efficiently. Due to the mesoporous structure and high specific surface of V2O3 nanofoam and the good electric conductivity of activated carbon, the obtained composites exhibit an obviously improved specific capacitance as high as 185[Formula: see text]F/g, which overpasses bulk V2O3 (119[Formula: see text]F/g) and activated carbon (113[Formula: see text]F/g). The rate capability of V2O3 nanofoam@activated carbon composites has also been improved, owing to the increased electron transport accelerated by the activated carbon and the fast electrolyte ion intercalation/deintercalation facilitated by mesopores of V2O3 nanofoam. The composites retain 56% of initial specific capacitance when the current density increases from 0.05[Formula: see text]A/g to 1.0[Formula: see text]A/g. Therefore, the obtained V2O3 nanofoam@activated carbon composites are low-cost electrode materials with obviously improved electrochemical performance, which are idea for supercapacitor application.

Interpenetrating Gels as Conducting/Adhering Matrices Enabling High-Performance Silicon Anodes

2021 ◽  
Author(s):  
Tingting Xia ◽  
Chengfei Xu ◽  
Pengfei Dai ◽  
Xiaoyun Li ◽  
Riming Lin ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Electrode Materials ◽  
Three Dimensional ◽  
Electrochemical Energy Storage ◽  
Active Materials ◽  
Silicon Anodes ◽  
Weak Binding ◽  
Binding Forces

Three-dimensional (3D) conductive polymers are promising conductive matrices for electrode materials toward electrochemical energy storage. However, their fragile nature and weak binding forces with active materials could not guarantee long-term...

Hybrid ZnO/ZnS nanoforests as the electrode materials for high performance supercapacitor application

2015 ◽  
Vol 44 (5) ◽  
pp. 2409-2415 ◽  
Author(s):  
Siwen Zhang ◽  
Bosi Yin ◽  
He Jiang ◽  
Fengyu Qu ◽  
Ahmad Umar ◽  
...  
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Thermal Evaporation ◽  
Tube Furnace ◽  
Thermal Evaporation Method ◽  
Argon Gas ◽  
Evaporation Method ◽  
Supercapacitor Application

Heterostructured ZnO/ZnS nanoforests are prepared through a simple two-step thermal evaporation method at 650 °C and 1300 °C in a tube furnace under the flow of argon gas, respectively.

Accelerating ion diffusion with unique three-dimensionally interconnected nanopores for self-membrane high-performance pseudocapacitors

Nanoscale ◽  
2017 ◽  
Vol 9 (46) ◽  
pp. 18311-18317 ◽  
Author(s):  
Yuan Gao ◽  
Yuanjing Lin ◽  
Zehua Peng ◽  
Qingfeng Zhou ◽  
Zhiyong Fan
Keyword(s):  
Aspect Ratio ◽  
Surface Area ◽  
Structural Stability ◽  
High Aspect Ratio ◽  
High Performance ◽  
Three Dimensional ◽  
Rate Capability ◽  
Large Surface Area ◽  
Nanoporous Structure ◽  
Ion Diffusion

Three-dimensional interconnected nanoporous structure (3-D INPOS) possesses high aspect ratio, large surface area, as well as good structural stability. Profiting from its unique interconnected architecture, the 3-D INPOS pseudocapacitor achieves a largely enhanced capacitance and rate capability.

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