Crystal Facet and Architecture Engineering of Metal Oxide Nanonetwork Anodes for High-Performance Potassium Ion Batteries and Hybrid Capacitors

ACS Nano ◽  
2022 ◽  
Author(s):  
Chao-Hung Chang ◽  
Kuan-Ting Chen ◽  
Yi-Yen Hsieh ◽  
Che-Bin Chang ◽  
Hsing-Yu Tuan
Keyword(s):  
Metal Oxide ◽  
High Performance ◽  
Potassium Ion ◽  
Crystal Facet ◽  
Hybrid Capacitors

scholarly journals Ultrafine MoP Nanoparticle Splotched Nitrogen‐Doped Carbon Nanosheets Enabling High‐Performance 3D‐Printed Potassium‐Ion Hybrid Capacitors

2021 ◽  
Vol 8 (7) ◽  
pp. 2004142
Author(s):  
Wei Zong ◽  
Ningbo Chui ◽  
Zhihong Tian ◽  
Yuying Li ◽  
Chao Yang ◽  
...  
Keyword(s):  
High Performance ◽  
Potassium Ion ◽  
Carbon Nanosheets ◽  
Nitrogen Doped ◽  
3D Printed ◽  
Nitrogen Doped Carbon ◽  
Hybrid Capacitors

scholarly journals Cocoon Silk-Derived, Hierarchically Porous Carbon as Anode for Highly Robust Potassium-Ion Hybrid Capacitors

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Haiyan Luo ◽  
Maoxin Chen ◽  
Jinhui Cao ◽  
Meng Zhang ◽  
Shan Tan ◽  
...  
Keyword(s):  
High Performance ◽  
High Surface ◽  
High Surface Area ◽  
High Energy ◽  
Potassium Ion ◽  
Void Space ◽  
Energy Storage Devices ◽  
Discharge Performance ◽  
Hierarchically Porous ◽  
Hybrid Capacitors

AbstractPotassium-ion hybrid capacitors (KIHCs) have attracted increasing research interest because of the virtues of potassium-ion batteries and supercapacitors. The development of KIHCs is subject to the investigation of applicable K+ storage materials which are able to accommodate the relatively large size and high activity of potassium. Here, we report a cocoon silk chemistry strategy to synthesize a hierarchically porous nitrogen-doped carbon (SHPNC). The as-prepared SHPNC with high surface area and rich N-doping not only offers highly efficient channels for the fast transport of electrons and K ions during cycling, but also provides sufficient void space to relieve volume expansion of electrode and improves its stability. Therefore, KIHCs with SHPNC anode and activated carbon cathode afford high energy of 135 Wh kg−1 (calculated based on the total mass of anode and cathode), long lifespan, and ultrafast charge/slow discharge performance. This study defines that the KIHCs show great application prospect in the field of high-performance energy storage devices.

scholarly journals A General Self-Sacrifice Template Strategy to 3D Heteroatom-Doped Macroporous Carbon for High-Performance Potassium-Ion Hybrid Capacitors

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Junwei Li ◽  
Xiang Hu ◽  
Guobao Zhong ◽  
Yangjie Liu ◽  
Yaxin Ji ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Density Functional ◽  
High Energy ◽  
Potassium Ion ◽  
High Energy Density ◽  
Capacitance Performance ◽  
Hybrid Capacitors ◽  
Co Doped ◽  
Macroporous Carbon

AbstractPotassium-ion hybrid capacitors (PIHCs) tactfully combining capacitor-type cathode with battery-type anode have recently attracted increasing attentions due to their advantages of decent energy density, high power density, and low cost; the mismatches of capacity and kinetics between capacitor-type cathode and battery-type anode in PIHCs yet hinder their overall performance output. Herein, based on prediction of density functional theory calculations, we find Se/N co-doped porous carbon is a promising candidate for K+ storage and thus develop a simple and universal self-sacrifice template method to fabricate Se and N co-doped three-dimensional (3D) macroporous carbon (Se/N-3DMpC), which features favorable properties of connective hierarchical pores, expanded interlayer structure, and rich activity site for boosting pseudocapacitive activity and kinetics toward K+ storage anode and enhancing capacitance performance for the reversible anion adsorption/desorption cathode. As expected, the as-assembled PIHCs full cell with a working voltage as high as 4.0 V delivers a high energy density of 186 Wh kg−1 and a power output of 8100 W kg−1 as well as excellent long service life. The proof-of-concept PIHCs with excellent performance open a new avenue for the development and application of high-performance hybrid capacitors.

Candle soot: onion-like carbon, an advanced anode material for a potassium-ion hybrid capacitor

2019 ◽  
Vol 7 (15) ◽  
pp. 9247-9252 ◽  
Author(s):  
Jiangtao Chen ◽  
Bingjun Yang ◽  
Hongxia Li ◽  
Pengjun Ma ◽  
Junwei Lang ◽  
...  
Keyword(s):  
Anode Material ◽  
High Performance ◽  
Potassium Ion ◽  
Candle Soot ◽  
Hybrid Capacitors

Onion-like carbon obtained from candle soot behaves as a high-performance anode for potassium-ion hybrid capacitors.

A metal–organic framework-derived pseudocapacitive titanium oxide/carbon core/shell heterostructure for high performance potassium ion hybrid capacitors

2020 ◽  
Vol 8 (32) ◽  
pp. 16302-16311 ◽  
Author(s):  
Hongxia Li ◽  
Jiangtao Chen ◽  
Li Zhang ◽  
Kunjie Wang ◽  
Xu Zhang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Titanium Oxide ◽  
High Performance ◽  
Metal Organic Framework ◽  
Potassium Ion ◽  
Core Shell ◽  
Carbon Cathode ◽  
Metal Organic ◽  
Carbon Core ◽  
Hybrid Capacitors

A high performance potassium-ion hybrid capacitor is constructed by coupling a MOF-derived pseudocapacitive TiO2/C@NPSC heterostructure anode with a MOF-derived activated carbon cathode.

Fast potassium storage in Ba0.5Ti2(PO4)3/C nanospheres for high-performance potassium-ion hybrid capacitors

2022 ◽  
Vol 518 ◽  
pp. 230771
Author(s):  
Jing Dai ◽  
Chenke Zhao ◽  
Nian Yang ◽  
He Wang ◽  
Li Liu ◽  
...  
Keyword(s):  
High Performance ◽  
Potassium Ion ◽  
Hybrid Capacitors

scholarly journals Homologous Strategy to Construct High-Performance Coupling Electrodes for Advanced Potassium-Ion Hybrid Capacitors

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Ying Xu ◽  
Jiafeng Ruan ◽  
Yuepeng Pang ◽  
Hao Sun ◽  
Chu Liang ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Electrochemical Performance ◽  
High Performance ◽  
Large Scale ◽  
High Capacity ◽  
Rate Capability ◽  
High Energy ◽  
Potassium Ion ◽  
Koh Activation ◽  
Hybrid Capacitors

Abstract Potassium-ion hybrid capacitors (PIHCs) have been considered as promising potentials in mid- to large-scale storage system applications owing to their high energy and power density. However, the process involving the intercalation of K+ into the carbonaceous anode is a sluggish reaction, while the adsorption of anions onto the cathode surface is relatively faster, resulting in an inability to exploit the advantage of high energy. To achieve a high-performance PIHC, it is critical to promote the K+ insertion/desertion in anodic materials and design suitable cathodic materials matching the anodes. In this study, we propose a facile “homologous strategy” to construct suitable anode and cathode for high-performance PIHCs, that is, unique multichannel carbon fiber (MCCF)-based anode and cathode materials are firstly prepared by electrospinning, and then followed by sulfur doping and KOH activation treatment, respectively. Owing to a multichannel structure with a large interlayer spacing for introducing S in the sulfur-doped multichannel carbon fiber (S-MCCF) composite, it presents high capacity, super rate capability, and long cycle stability as an anode in potassium-ion cells. The cathode composite of activated multichannel carbon fiber (aMCCF) has a considerably high specific surface area of 1445 m2 g−1 and exhibits outstanding capacitive performance. In particular, benefiting from advantages of the fabricated S-MCCF anode and aMCCF cathode by homologous strategy, PIHCs assembled with the unique MCCF-based anode and cathode show outstanding electrochemical performance, which can deliver high energy and power densities (100 Wh kg−1 at 200 W kg−1, and 58.3 Wh kg−1 at 10,000 W kg−1) and simultaneously exhibit superior cycling stability (90% capacity retention over 7000 cycles at 1.0 A g−1). The excellent electrochemical performance of the MCCF-based composites for PIHC electrodes combined with their simple construction renders such materials attractive for further in-depth investigations of alkali-ion battery and capacitor applications.

scholarly journals Designing g‐C 3 N 4 /N‐Rich Carbon Fiber Composites for High‐Performance Potassium‐Ion Hybrid Capacitors

2020 ◽  
Author(s):  
Qing Shen ◽  
Pengjie Jiang ◽  
Hongcheng He ◽  
Yanhong Feng ◽  
Yong Cai ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
High Performance ◽  
Fiber Composites ◽  
Potassium Ion ◽  
Carbon Fiber Composites ◽  
Hybrid Capacitors
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