High-Rate Charge-Discharge Performance of Composite Materials of β-FeOOH Particles and Carbon Powder Prepared in the Presence of Ti(IV) Ions

2006 ◽  
Vol 320 ◽  
pp. 215-218
Author(s):  
Hideyuki Morimoto ◽  
Kazuhiko Takeno ◽  
Yuuki Uozumi ◽  
Kenichi Sugimoto ◽  
Shinichi Tobishima
Keyword(s):  
Composite Materials ◽  
Electrode Materials ◽  
Active Material ◽  
High Rate ◽  
Cycle Performance ◽  
Carbon Powder ◽  
Energy Storage Devices ◽  
Discharge Current Density ◽  
Discharge Performance ◽  
Charge Discharge

Composite materials of β-FeOOH particles and carbon powder were prepared by hydrolyzing of FeCl3+Ti(SO4)2 (aq.) in which carbon powder was dispersed. β-FeOOH formed in the presence of Ti(IV) ions became amorphous and/or low crystallinity. The composite materials prepared in the presence of Ti(IV) ions worked as lithium intercalation electrodes in nonaqueous electrolytes including lithium ions. The electrodes exhibited a good cycle performance at large charge-discharge current density over 5 mA cm-2 ( 4 A g-1 per weight of active material). The composite materials are one of the promising candidates as electrode materials for energy storage devices, such as hybrid electrochemical supercapacitor, that require high-power operations.

High-Rate Charge-Discharge Performance of Composite Electrodes of FeOOH-Based Amorphous Particles and Carbon Powder

2008 ◽  
Vol 388 ◽  
pp. 33-36
Author(s):  
Hideyuki Morimoto ◽  
Kazuhiko Takeno ◽  
Tsuyoshi Takahashi ◽  
Kensaku Hayashi ◽  
Shinichi Tobishima
Keyword(s):  
Heat Treatment ◽  
Electrode Materials ◽  
High Rate ◽  
Cycle Performance ◽  
Carbon Powder ◽  
Composite Electrodes ◽  
Discharge Current Density ◽  
Discharge Performance ◽  
Amorphous Particles ◽  
Charge Discharge

Composite electrode materials of amorphous FeOOH-based particles and carbon powder were prepared by heat treatment of composite powder obtained by hydrolyzing of mixed aqueous solutions of FeCl3 and Ti(SO4)2 into which electron conducting carbon powder was dispersed. They exhibited high capacities over 150 mAh g-1 and good cycle performance at large charge-discharge current density of 5 mA cm-2 (ca. 1 A g-1). In this case, the heat treatment was effective process to improve the cycle performance.

High-Rate Charge-Discharge Performances of β-FeOOH-Carbon Composite Electrodes

2006 ◽  
Vol 301 ◽  
pp. 139-142 ◽  
Author(s):  
Hideyuki Morimoto ◽  
Kazuhiko Takeno ◽  
Yuuki Uozumi ◽  
Kenichi Sugimoto ◽  
Shinichi Tobishima
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Electrode Material ◽  
Composite Electrode ◽  
Electrode Materials ◽  
Fine Particles ◽  
High Rate ◽  
Carbon Powder ◽  
Discharge Current Density ◽  
Charge Discharge

Composite electrode material of crystalline b-FeOOH and carbon was prepared by hydrolyzing of FeCl3 (aq.) in which carbon powder with various specific surface areas was dispersed. Composite electrode material of b-FeOOH fine particles and Ketjen black (KB:specific surface area 1270 m2 g-1) of high specific surface area exhibited the high capacity over 250 mAh g-1 per b-FeOOH weight and good cycle performances at rapid charge-discharge current density over 5 mA cm-2 (ca. 5.0 A g-1 per b-FeOOH weight) in nonaqueous electrolytes including lithium ions. Composite electrode materials of crystalline b-FeOOH and carbon are one of the promising candidates as electrode materials for energy storage devices that high-power operations are required.

Synthesis of composite electrode materials of FeOOH-based particles/carbon powder and their high-rate charge–discharge performance in lithium cells

2011 ◽  
Vol 196 (15) ◽  
pp. 6512-6516 ◽  
Author(s):  
Hideyuki Morimoto ◽  
Kazuhiko Takeno ◽  
Yuuki Uozumi ◽  
Ken-ichi Sugimoto ◽  
Shin-ichi Tobishima
Keyword(s):  
Composite Electrode ◽  
Electrode Materials ◽  
High Rate ◽  
Carbon Powder ◽  
Discharge Performance ◽  
Charge Discharge ◽  
Lithium Cells

Novel High-Rate Lithium Intercalation Electrode Materials Prepared by LiOH Solution Treatment of TiO2/Carbon Composites

2007 ◽  
Vol 350 ◽  
pp. 199-202 ◽  
Author(s):  
Hideyuki Morimoto ◽  
Kenji Kurita ◽  
Tetsuya Matsuda ◽  
Shinichi Tobishima
Keyword(s):  
Electrode Materials ◽  
Coulombic Efficiency ◽  
Solution Treatment ◽  
High Rate ◽  
Lithium Intercalation ◽  
Carbon Composites ◽  
Composite Electrodes ◽  
Energy Storage Devices ◽  
Discharge Current Density ◽  
Storage Devices

Anatase-type TiO2-based oxide gel /carbon composites were treated chemically with LiOH aqueous solution at 60 °C. The crystalline phase of treated powder was examined by powder x-ray diffraction using CuKα radiation. The main diffraction peaks may be detected as belonging to cubic LiTiO2. High-rate lithium intercalation properties of the samples were estimated in nonaqueous electrolyte including lithium ions. The composite electrodes exhibited high coulombic efficiency over 90% at first cycle and high capacities over 200 mAh g-1 after 200 cycle at large charge-discharge current density of 5.0 mA cm-2 (3.7 A g-1). The composite materials are one of the promising candidates as electrode materials for energy storage devices, such as hybrid capacitor, that require high-power operations.

Synthesis of NiCo2S4@NiMoO4 Nanosheets with Excellent Electrochemical Performance for Supercapacitor

2021 ◽  
Author(s):  
Yucai Li ◽  
Yan Zhao ◽  
Shiwei Song ◽  
Jian wang
Keyword(s):  
Electrode Materials ◽  
High Specific Capacitance ◽  
High Energy ◽  
High Energy Density ◽  
Cycle Performance ◽  
Ni Foam ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Excellent Electrochemical Performance ◽  
Potential Applications

Abstract Core-shell structured NiCo2S4@NiMoO4 is considered to be one of the most promising electrode materials for supercapacitors due to its high specific capacitance and excellent cycle performance. In this work, we report NiCo2S4@NiMoO4 nanosheets on Ni foam by two-step fabricated method. The as-obtained product has high capacitance of 1102.5 F g− 1 at 1 A g− 1. The as-assembled supercapacitor has also a high energy density of 37.6 W h kg− 1 and superior cycle performance with 85% capacitance retention. The electrode materials reported here might exhibits potential applications in future energy storage devices.

scholarly journals Sustainable Anodes for Lithium- and Sodium-Ion Batteries Based on Coffee Ground-Derived Hard Carbon and Green Binders

Energies ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 6216
Author(s):  
Hamideh Darjazi ◽  
Antunes Staffolani ◽  
Leonardo Sbrascini ◽  
Luca Bottoni ◽  
Roberto Tossici ◽  
...  
Keyword(s):  
Food Waste ◽  
Anode Materials ◽  
Active Material ◽  
Added Value ◽  
Hard Carbon ◽  
Great Opportunity ◽  
Discharge Performance ◽  
Coffee Ground ◽  
Li Ion ◽  
Charge Discharge

The reuse and recycling of products, leading to the utilization of wastes as key resources in a closed loop, is a great opportunity for the market in terms of added value and reduced environmental impact. In this context, producing carbonaceous anode materials starting from raw materials derived from food waste appears to be a possible approach to enhance the overall sustainability of the energy storage value chain, including Li-ion (LIBs) and Na-ion batteries (NIBs). In this framework, we show the behavior of anodes for LIBs and NIBs prepared with coffee ground-derived hard carbon as active material, combined with green binders such as Na-carboxymethyl cellulose (CMC), alginate (Alg), or polyacrylic acid (PAA). In order to evaluate the effect of the various binders on the charge/discharge performance, structural and electrochemical investigations are carried out. The electrochemical characterization reveals that the alginate-based anode, used for NIBs, delivers much enhanced charge/discharge performance and capacity retention. On the other hand, the use of the CMC-based electrode as LIBs anode delivers the best performance in terms of discharge capacity, while the PAA-based electrode shows enhanced cycling stability. As a result, the utilization of anode materials derived from an abundant food waste, in synergy with the use of green binders and formulations, appears to be a viable opportunity for the development of efficient and sustainable Li-ion and Na-ion batteries.

scholarly journals MXene-Derived Defect-Rich TiO2@rGO as High-Rate Anodes for Full Na Ion Batteries and Capacitors

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Yongzheng Fang ◽  
Yingying Zhang ◽  
Chenxu Miao ◽  
Kai Zhu ◽  
Yong Chen ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electrode Materials ◽  
Low Cost ◽  
Parent Phase ◽  
High Capacity ◽  
Cycling Performance ◽  
Maximum Energy ◽  
Sodium Ion ◽  
High Rate ◽  
Energy Storage Devices

AbstractSodium ion batteries and capacitors have demonstrated their potential applications for next-generation low-cost energy storage devices. These devices's rate ability is determined by the fast sodium ion storage behavior in electrode materials. Herein, a defective TiO2@reduced graphene oxide (M-TiO2@rGO) self-supporting foam electrode is constructed via a facile MXene decomposition and graphene oxide self-assembling process. The employment of the MXene parent phase exhibits distinctive advantages, enabling defect engineering, nanoengineering, and fluorine-doped metal oxides. As a result, the M-TiO2@rGO electrode shows a pseudocapacitance-dominated hybrid sodium storage mechanism. The pseudocapacitance-dominated process leads to high capacity, remarkable rate ability, and superior cycling performance. Significantly, an M-TiO2@rGO//Na3V2(PO4)3 sodium full cell and an M-TiO2@rGO//HPAC sodium ion capacitor are fabricated to demonstrate the promising application of M-TiO2@rGO. The sodium ion battery presents a capacity of 177.1 mAh g−1 at 500 mA g−1 and capacity retention of 74% after 200 cycles. The sodium ion capacitor delivers a maximum energy density of 101.2 Wh kg−1 and a maximum power density of 10,103.7 W kg−1. At 1.0 A g−1, it displays an energy retention of 84.7% after 10,000 cycles.

Corncob-shaped ZnFe2O4/C nanostructures for improved anode rate and cycle performance in lithium-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (40) ◽  
pp. 31807-31814 ◽  
Author(s):  
Junwei Mao ◽  
Xianhua Hou ◽  
Xinyu Wang ◽  
Guannan He ◽  
Zongping Shao ◽  
...  
Keyword(s):  
Composite Materials ◽  
Lithium Ion Batteries ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
Cycle Performance ◽  
High Rate Capability

The as-prepared corncob-shaped ZnFe2O4/C composite materials serve as anodes in lithium ion batteries and display high rate capability and enhanced recycling durability in comparison with pure ZnFe2O4 materials.

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