An exceptionally large energy cathode with the K–SO4–Cu conversion reaction for potassium rechargeable batteries

2021 ◽  
Author(s):  
Yongseok Lee ◽  
Jung-Keun Yoo ◽  
Hyunyoung Park ◽  
Wonseok Ko ◽  
Jungmin Kang ◽  
...  
Keyword(s):  
Rechargeable Batteries ◽  
Large Energy ◽  
Electrochemical Performances ◽  
Operating Voltage ◽  
Conversion Reaction ◽  
Average Operating

A nano-sized CuSO4/carbon (N-CSO/C) composite achieves outstanding electrochemical performances with a high average operating voltage of ∼2.8 V (vs. K+/K).

Synthesis and Electrochemical Behaviour of Ramsdellite LiCrTiO4

2002 ◽  
Vol 756 ◽  
Author(s):  
F. García-Alvarado ◽  
M. Martín-Gil ◽  
A. Kuhn
Keyword(s):  
High Temperature ◽  
Open Circuit Voltage ◽  
Electrochemical Behaviour ◽  
Specific Capacity ◽  
Rechargeable Batteries ◽  
Open Circuit ◽  
The Other ◽  
Operating Voltage ◽  
Lithium Rechargeable Batteries ◽  
Average Operating

ABSTRACTA ramsdellite with composition LiCrTiO4 has been obtained by heating the spinel of same composition to high temperature. The new ramsdellite has been investigated in view of its possible use as an electrode material in lithium rechargeable batteries. Lithium can be partially extracted from ramsdellite LiCrTiO4 and further intercalated into, by contrast to the spinel of same composition. The average operating voltage during lithium extraction is 4 Volts vs. lithium, and the process produces a specific capacity of 90 mAh/g at 0.1 mA/cm2. On the other hand, upon reduction from open circuit voltage, lithium can be reversibly intercalated into the ramsdellite polymorph at ca. 1.5 V vs. lithium yielding a rechargeable capacity of 110 mAh/g at 0.1 mA/cm2.

scholarly journals Advanced Anode Materials of Potassium Ion Batteries: from Zero Dimension to Three Dimensions

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Jiefeng Zheng ◽  
Yuanji Wu ◽  
Yingjuan Sun ◽  
Jianhua Rong ◽  
Hongyan Li ◽  
...  
Keyword(s):  
Anode Materials ◽  
Carbon Materials ◽  
Rechargeable Batteries ◽  
Potassium Ion ◽  
Three Dimensions ◽  
Electrochemical Performances ◽  
Ionic Transfer ◽  
Transfer Path ◽  
Effective Strategies ◽  
Stress Changes

Abstract Potassium ion batteries (PIBs) with the prominent advantages of sufficient reserves and economical cost are attractive candidates of new rechargeable batteries for large-grid electrochemical energy storage systems (EESs). However, there are still some obstacles like large size of K+ to commercial PIBs applications. Therefore, rational structural design based on appropriate materials is essential to obtain practical PIBs anode with K+ accommodated and fast diffused. Nanostructural design has been considered as one of the effective strategies to solve these issues owing to unique physicochemical properties. Accordingly, quite a few recent anode materials with different dimensions in PIBs have been reported, mainly involving in carbon materials, metal-based chalcogenides (MCs), metal-based oxides (MOs), and alloying materials. Among these anodes, nanostructural carbon materials with shorter ionic transfer path are beneficial for decreasing the resistances of transportation. Besides, MCs, MOs, and alloying materials with nanostructures can effectively alleviate their stress changes. Herein, these materials are classified into 0D, 1D, 2D, and 3D. Particularly, the relationship between different dimensional structures and the corresponding electrochemical performances has been outlined. Meanwhile, some strategies are proposed to deal with the current disadvantages. Hope that the readers are enlightened from this review to carry out further experiments better.

High specific capacity and excellent stability of interface-controlled MWCNT based anodes in lithium ion battery

2011 ◽  
Vol 1313 ◽  
Author(s):  
Indranil Lahiri ◽  
Sung-Woo Oh ◽  
Yang-Kook Sun ◽  
Wonbong Choi
Keyword(s):  
Electrode Materials ◽  
Specific Capacity ◽  
High Energy ◽  
Rechargeable Batteries ◽  
Operating Voltage ◽  
Li Ion Batteries ◽  
High Specific Capacity ◽  
Capacity Degradation ◽  
Li Ion ◽  
Very High

ABSTRACTRechargeable batteries are in high demand for future hybrid vehicles and electronic devices markets. Among various kinds of rechargeable batteries, Li-ion batteries are most popular for their obvious advantages of high energy and power density, ability to offer higher operating voltage, absence of memory effect, operation over a wider temperature range and showing a low self-discharge rate. Researchers have shown great deal of interest in developing new, improved electrode materials for Li-ion batteries leading to higher specific capacity, longer cycle life and extra safety. In the present study, we have shown that an anode prepared from interface-controlled multiwall carbon nanotubes (MWCNT), directly grown on copper current collectors, may be the best suitable anode for a Li-ion battery. The newly developed anode structure has shown very high specific capacity (almost 2.5 times as that of graphite), excellent rate capability, nil capacity degradation in long-cycle operation and introduced a higher level of safety by avoiding organic binders. Enhanced properties of the anode were well supported by the structural characterization and can be related to very high Li-ion intercalation on the walls of CNTs, as observed in HRTEM. This newly developed CNT-based anode structure is expected to offer appreciable advancement in performance of future Li-ion batteries.

Electrochemical performances of cobalt oxide–carbon nanotubes electrodes via different methods as negative material for alkaline rechargeable batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (90) ◽  
pp. 73410-73415 ◽  
Author(s):  
Yanan Xu ◽  
Yanyin Dong ◽  
Xiaofeng Wang ◽  
Yijing Wang ◽  
Lifang Jiao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Cobalt Oxide ◽  
Rechargeable Batteries ◽  
Electrochemical Performances ◽  
Negative Materials ◽  
Negative Material ◽  
First Time

Co3O4/CNTs samples are synthesized via different methods and investigated as negative materials for alkaline rechargeable batteries for the first time.

β-NaVP2O7 as a Superior Electrode Material for Na-Ion Batteries

2019 ◽  
Author(s):  
Oleg Drozhzhin ◽  
Ilya Tertov ◽  
Anastasia Alekseeva ◽  
Dmitry A. Aksyonov ◽  
Keith Stevenson ◽  
...  
Keyword(s):  
Electrode Material ◽  
Low Voltage ◽  
Discharge Rate ◽  
Rate Capability ◽  
Reversible Capacity ◽  
Operating Voltage ◽  
Sodium Cations ◽  
Ion Storage ◽  
Average Operating ◽  
Voltage Region

<p>Herein, we present a novel <i>β</i>-polymorph of sodium vanadium pyrophosphate NaVP<sub>2</sub>O<sub>7</sub> with the KAlP<sub>2</sub>O<sub>7</sub>-type structure obtained via hydrothermal synthesis and further thermal dehydration of a hydrophosphate intermediate. <i>β</i>-NaVP<sub>2</sub>O<sub>7</sub> demonstrates attractive electrochemical behavior as a Na-ion positive electrode (cathode) material with practically achieved reversible capacity of 104 mAh/g at C/10 current density, average operating voltage of 3.9 V vs. Na/Na<sup>+ </sup>and only 0.5% volume change between the charged and discharged states. Electrode material exhibits excellent C-rate capability and cycling stability, providing the capacity of 90 mAh/g at 20C discharge rate and < 1% capacity loss after 100 charge-discharge cycles. At low voltage region (≈1.5 V vs. Na/Na<sup>+</sup>), <i>β</i>-NaVP<sub>2</sub>O<sub>7</sub> reversibly intercalates additional sodium cations leading to unprecedented overall Na-ion storage ability exceeding 250 mAh/g within the 1.5 – 4.4 V vs. Na/Na<sup>+</sup> voltage region. This material is one of only a few materials that exhibits reversible sodium ion storage capabilities over such a large potential window. </p>

Polymorphic Consideration in Conversion Reaction-Based MnO2 Anode Materials for Next-Generation Li Rechargeable Batteries

2020 ◽  
Vol MA2020-02 (2) ◽  
pp. 376-376
Author(s):  
Hyunwoo KIM ◽  
Woosung Choi ◽  
Jaesang Yoon ◽  
Eunkang Lee ◽  
Won-Sub Yoon
Keyword(s):  
Anode Materials ◽  
Rechargeable Batteries ◽  
Next Generation ◽  
Conversion Reaction

Phosphorus-based materials for high-performance rechargeable batteries

2017 ◽  
Vol 4 (9) ◽  
pp. 1424-1444 ◽  
Author(s):  
Xinyu Qin ◽  
Bingyi Yan ◽  
Jia Yu ◽  
Jie Jin ◽  
Yao Tao ◽  
...  
Keyword(s):  
High Performance ◽  
Rechargeable Batteries ◽  
Electrochemical Performances ◽  
Materials Properties ◽  
Materials Used

A review of P based materials used in LIB/NIB and their synthesis strategies, tailored materials properties and different electrochemical performances.

scholarly journals Improving the Electrochemical Performances of Supercapacitors through Modification of the Particle Size Distribution of the Carbon Electrode

2021 ◽  
Vol 927 (1) ◽  
pp. 012044
Author(s):  
Sutarsis ◽  
Jeng-Kuei Chang
Keyword(s):  
Particle Size ◽  
Activated Carbon ◽  
Functional Groups ◽  
Carbon Composite ◽  
High Rate ◽  
Electrochemical Performances ◽  
Operating Voltage ◽  
Carbon Electrode ◽  
Surface Areas ◽  
Wide Range

Abstract The effect of a synergetic mixture of large and small activated carbon composite particles on the performance of organic electrolyte-based EDLCs was examined in this work. Different surface areas, pore volumes, particle size distributions, and concentrations of surface functional groups were observed in bi-modal particle sizes of activated carbon composites. Using galvanostatic cycling, the cell capacitance of an activated carbon composite rose with an increase in the fraction of big particles (C8) over a wide range of rates. Due to their moderate specific surface areas, a relatively low fraction of smaller particle size, low concentration of oxygen functional groups, low contact resistance, and high ionic conductivity, the 0.25C4+0.75C8 carbon electrode composite has a high specific capacitance, high retention of high rate discharge, and long cycle life when compared to other composites and single carbon electrodes (C4, C8, and C12). The leakage current and gas evolution may be suppressed to an operating voltage of 3.0 V with an appropriate fraction of large and small particle composition on the carbon electrode, boosting the carbon cells’ reliability and stability.

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