Fast-Charging Nonaqueous Potassium-Ion Batteries Enabled by Rational Construction of Oxygen-Rich Porous Nanofiber Anodes

2021 ◽  
Author(s):  
Sheng-yang Li ◽  
Hong-li Deng ◽  
Zong-lin Chu ◽  
Tao Wang ◽  
Lei Wang ◽  
...  
Keyword(s):  
Potassium Ion ◽  
Fast Charging ◽  
Porous Nanofiber ◽  
Rational Construction

scholarly journals PEDOT-Coated Red Phosphorus Nanosphere Anodes for Pseudocapacitive Potassium-Ion Storage

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1732
Author(s):  
Dan Zhao ◽  
Qian Zhao ◽  
Zhenyu Wang ◽  
Lan Feng ◽  
Jinying Zhang ◽  
...  
Keyword(s):  
Surface Engineering ◽  
Electronic Conductivity ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Average Diameter ◽  
Potassium Ion ◽  
Red Phosphorus ◽  
Fast Charging ◽  
Potential Alternative ◽  
High Theoretical Capacity

Potassium-ion batteries (KIBs) have come up as a potential alternative to lithium-ion batteries due to abundant potassium storage in the crust. Red phosphorus is a promising anode material for KIBs with abundant resources and high theoretical capacity. Nevertheless, large volume expansion, low electronic conductivity, and limited K+ charging speed in red phosphorus upon cycling have severely hindered the development of red phosphorus-based anodes. To obtain improved conductivity and structural stability, surface engineering of red phosphorus is required. Poly(3,4-ethylenedioxythiophene) (PEDOT)-coated red phosphorus nanospheres (RPNP@PEDOT) with an average diameter of 60 nm were synthesized via a facile solution-phase approach. PEDOT can relieve the volume change of red phosphorus and promote electron/ion transportation during charge−discharge cycles, which is partially corroborated by our DFT calculations. A specific capacity of 402 mAh g−1 at 0.1 A g−1 after 40 cycles, and a specific capacity of 302 mAh g−1 at 0.5 A g−1 after 275 cycles, were achieved by RPNP@PEDOT anode with a high pseudocapacitive contribution of 62%. The surface–interface engineering for the organic–inorganic composite of RPNP@PEDOT provides a novel perspective for broad applications of red phosphorus-based KIBs in fast charging occasions.

Rational Construction of Nitrogen‐Doped Hierarchical Dual‐Carbon for Advanced Potassium‐Ion Hybrid Capacitors

2020 ◽  
Vol 10 (15) ◽  
pp. 1904045 ◽  
Author(s):  
Jiafeng Ruan ◽  
Fangjie Mo ◽  
Ziliang Chen ◽  
Miao Liu ◽  
Shiyou Zheng ◽  
...  
Keyword(s):  
Potassium Ion ◽  
Nitrogen Doped ◽  
Rational Construction ◽  
Hybrid Capacitors

Pseudo-Capacitance Reinforced Modified Graphite for Fast-Charging Potassium-Ion Batteries

Carbon ◽  
2021 ◽  
Author(s):  
Fu Yuan ◽  
Yu Lei ◽  
Huwei Wang ◽  
Xiaojing Li ◽  
Junyang Hu ◽  
...  
Keyword(s):  
Potassium Ion ◽  
Fast Charging

Rational Construction of Advanced Potassium Ion Diffusion and Storage Matrix

2020 ◽  
pp. 2005933
Author(s):  
Jianjiang He ◽  
Tiantian Lu ◽  
Kun Wang ◽  
Xin Wang ◽  
Xiaodong Li ◽  
...  
Keyword(s):  
Potassium Ion ◽  
Ion Diffusion ◽  
Rational Construction ◽  
And Storage

Rational construction of K0.5V2O5 nanobelts/CNTs flexible cathode for multi-functional potassium ion batteries

Nanoscale ◽  
2021 ◽  
Author(s):  
Xin Li ◽  
Chenfei Zhuang ◽  
Junmin Xu ◽  
Liang Li ◽  
Tingting Xu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Redox Potential ◽  
Low Cost ◽  
Potassium Ion ◽  
Electrochemical Energy Storage ◽  
Rational Construction ◽  
Storage Technologies ◽  
Electrochemical Energy

Potassium ion battery (KIB) is one of the emerging electrochemical energy storage technologies due to the abundance, low cost, and low redox potential of K. One of the most promising...

Myrsinane and related diterpenes from Euphorbia falcata with selective potassium ion channel activity

Planta Medica ◽  
2015 ◽  
Vol 81 (16) ◽  
Author(s):  
A Vasas ◽  
P Orvos ◽  
L Tálosi ◽  
P Forgo ◽  
G Pinke ◽  
...  
Keyword(s):  
Ion Channel ◽  
Potassium Ion ◽  
Channel Activity ◽  
Potassium Ion Channel

DNA Inspirited Rational Construction of Nonconventional Luminophores with Efficient and Color-Tunable Afterglow

2020 ◽  
Author(s):  
Yunzhong Wang ◽  
Saixing Tang ◽  
Yating Wen ◽  
Shuyuan Zheng ◽  
Bing Yang ◽  
...  
Keyword(s):  
Rational Design ◽  
Room Temperature ◽  
Double Helix ◽  
Mechanical Grinding ◽  
Room Temperature Phosphorescence ◽  
Color Tunable ◽  
Potential Applications ◽  
Rational Construction ◽  
Double Helix Structure ◽  
Made In

<div>Persistent room-temperature phosphorescence (p-RTP) from pure organics is attractive </div><div>due to its fundamental importance and potential applications in molecular imaging, </div><div>sensing, encryption, anticounterfeiting, etc.1-4 Recently, efforts have been also made in </div><div>obtaining color-tunable p-RTP in aromatic phosphors5 and nonconjugated polymers6,7. </div><div>The origin of color-tunable p-RTP and the rational design of such luminogens, </div><div>particularly those with explicit structure and molecular packing, remain challenging. </div><div>Noteworthily, nonconventional luminophores without significant conjugations generally </div><div>possess excitation-dependent photoluminescence (PL) because of the coexistence of </div><div>diverse clustered chromophores6,8, which strongly implicates the possibility to achieve </div><div>color-tunable p-RTP from their molecular crystals assisted by effective intermolecular </div><div>interactions. Here, inspirited by the highly stable double-helix structure and multiple </div><div>hydrogen bonds in DNA, we reported a series of nonconventional luminophores based on </div><div>hydantoin (HA), which demonstrate excitation-dependent PL and color-tunable p-RTP </div><div>from sky-blue to yellowish-green, accompanying unprecedentedly high PL and p-RTP </div><div>efficiencies of up to 87.5% and 21.8%, respectively. Meanwhile, the p-RTP emissions are </div><div>resistant to vigorous mechanical grinding, with lifetimes of up to 1.74 s. Such robust, </div><div>color-tunable and highly efficient p-RTP render the luminophores promising for varying </div><div>applications. These findings provide mechanism insights into the origin of color-tunable </div><div>p-RTP, and surely advance the exploitation of efficient nonconventional luminophores.</div>

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