A polyimide anode with high capacity and superior cyclability for aqueous Na-ion batteries

2015 ◽  
Vol 51 (24) ◽  
pp. 5097-5099 ◽  
Author(s):  
Wenwen Deng ◽  
Yifei Shen ◽  
Jiangfeng Qian ◽  
Hanxi Yang
Keyword(s):  
Low Cost ◽  
High Capacity ◽  
Rate Capability ◽  
Environmentally Benign ◽  
Capacity Retention ◽  
Redox Active ◽  
Molecular Unit

A redox-active and water-insoluble polyimide can reversibly bind 2 Na+ ions per molecular unit, demonstrating a high capacity of 130 mA h g−1, a strong rate capability at 10 C rate and excellent capacity retention of 91.2% over 1000 cycles, offering a low cost and environmentally benign anode for aqueous Na-ion batteries.

scholarly journals Hydrothermal Synthesis of Li2MnO3-Stabilized LiMnO2 as a Cathode Material for Li-Ion Battery

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Ngoc Hung Vu ◽  
Van-Duong Dao ◽  
Hong Ha Thi Vu ◽  
Nguyen Van Noi ◽  
Dinh Trinh Tran ◽  
...  
Keyword(s):  
Cathode Material ◽  
High Performance ◽  
Low Cost ◽  
High Capacity ◽  
Environmentally Benign ◽  
Li Ion Battery ◽  
Cycle Stability ◽  
Capacity Retention ◽  
Li Ion ◽  
Potential Strategy

Herein, we reported the composite structure of LiMnO2 and Li2MnO3 as a low-cost and environmentally benign cathode material. This composite with the main phase of LiMnO2 (90%) was synthesized by hydrothermal method at 220°C from LiOH and Mn(CH3COO)2 precursors. The obtained nanosized LiMnO2-LiMnO3 cathode material exhibits a high capacity of 265 mAh g-1 at C/10. The incorporation of Li2MnO3 into the LiMnO2 phase could stabilize the structure, leading to the improved cycle stability of the cathode. The capacity retention of the cathode was 93% after 80 cycles at C/2. Our results facilitate a potential strategy for developing high-performance cathode materials based on the Li-Mn-O system.

Sulfur–nitrogen co-doped porous carbon nanosheets to control lithium growth for a stable lithium metal anode

2019 ◽  
Vol 7 (31) ◽  
pp. 18267-18274 ◽  
Author(s):  
Mei Chen ◽  
Jianhui Zheng ◽  
Ouwei Sheng ◽  
Chengbin Jin ◽  
Huadong Yuan ◽  
...  
Keyword(s):  
Porous Carbon ◽  
High Capacity ◽  
Rate Capability ◽  
Lithium Metal ◽  
Capacity Retention ◽  
Carbon Nanosheets ◽  
Metal Anode ◽  
Co Doping ◽  
Lithium Metal Anode ◽  
Co Doped

Based on S, N co-doping, a full cell exhibits high capacity retention and excellent rate capability.

scholarly journals An Alternative Synthesis Route of LiFePO4-Carbon Composites for Li-Ion Cathodes

2013 ◽  
Vol 2013 ◽  
pp. 1-6
Author(s):  
Yongbing Lou ◽  
Jingjing Zhang ◽  
Lin Zhu ◽  
Lixu Lei
Keyword(s):  
Low Cost ◽  
Specific Capacity ◽  
Rate Capability ◽  
Cycling Performance ◽  
Environmentally Benign ◽  
Capping Agent ◽  
Discharge Performance ◽  
Peg 400 ◽  
Dispersive Effect ◽  
Good Crystallinity

LiFePO4-Carbon (LFP/C) composites with high purity and good crystallinity were prepared by an improved environmentally benign and low-cost solvothermal method. Capping agent polyvinylpyrrolidone (PVP) and polyethylene glycol (PEG-400) showed no significant dispersive effect during the synthesis. These capping agents were converted into networking carbons after annealing, which consequently improved the charge and discharge performance. It was able to deliver a high initial discharge specific capacity of 154.1 mAh g−1for sample prepared with PVP and 145.6 mAh g−1for sample prepared with PEG-400 while having great capacity retention. The rate capability and cycling performance of LFP/C samples prepared with PVP or PEG-400 at high current rates were significantly improved compared to the LFP/C sample prepared without a capping agent.

Sn4+xP3@ Amorphous Sn-P Composites as Anodes for Sodium-Ion Batteries with Low Cost, High Capacity, Long Life, and Superior Rate Capability

2014 ◽  
Vol 26 (24) ◽  
pp. 4037-4042 ◽  
Author(s):  
Weijie Li ◽  
Shu-Lei Chou ◽  
Jia-Zhao Wang ◽  
Jung Ho Kim ◽  
Hua-Kun Liu ◽  
...  
Keyword(s):  
Low Cost ◽  
High Capacity ◽  
Rate Capability ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Long Life

Uniform GeO2 dispersed in nitrogen-doped porous carbon core–shell architecture: an anode material for lithium ion batteries

2015 ◽  
Vol 3 (43) ◽  
pp. 21722-21732 ◽  
Author(s):  
Duc Tung Ngo ◽  
Hang T. T. Le ◽  
Ramchandra S. Kalubarme ◽  
Jae-Young Lee ◽  
Choong-Nyeon Park ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
High Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Germanium Oxide ◽  
Volume Changes ◽  
Capacity Retention ◽  
Nitrogen Doped ◽  
Carbon Core

Germanium oxide (GeO2), which possesses great potential as a high-capacity anode material for lithium ion batteries, has suffered from its poor capacity retention and rate capability due to significant volume changes during lithiation and delithiation.

A low-cost bromine-fixed additive enables a high capacity retention zinc-bromine batteries

2021 ◽  
Author(s):  
Pengcheng Xu ◽  
Tianyu Li ◽  
Qiong Zheng ◽  
Huamin Zhang ◽  
Yanbin Yin ◽  
...  
Keyword(s):  
Low Cost ◽  
High Capacity ◽  
Capacity Retention

scholarly journals LAYERED O3-NaFe0.5Co0.5O2 AS HIGH CAPACITY AND LOW- COST MATERIAL FOR SODIUM ION BATTERIES

2019 ◽  
Vol 57 (2) ◽  
pp. 198 ◽  
Author(s):  
Nguyen Van Hoang ◽  
Huynh Le Thanh Nguyen ◽  
Tran Van Man ◽  
Le My Loan Phung ◽  
Nguyen Dinh Quan
Keyword(s):  
Low Cost ◽  
High Capacity ◽  
Reversible Capacity ◽  
Argon Atmosphere ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Capacity Retention ◽  
Voltage Plateau ◽  
Excellent Cycling Stability ◽  
Discharge Curves

O3-NaFe0.5Co0.5O2 layered cathode material was synthesized by solid state reaction at 900 oC followed by a quenching step in argon atmosphere. The chemical composition and morphology of synthesized material were analyzed by Atomic Absorption Spectroscopy (AAS) and Scanning Electron Microscopy (SEM). The electrochemical properties were evaluated by Cyclic Voltammetry (CV) and charge-discharge cycling. The material NaFe0.5Co0.5O2 shows the sloped discharge curves with high flat voltage plateau and excellent cycling stability. The reversible capacity of about 120 mAh/g at rate C/10 and good capacity retention after 100 cycles were obtained.

FLUX SYNTHESIS OF Na0.44MnO2 NANORIBBONS AND THEIR ELECTROCHEMICAL PROPERTIES FOR Na-ION BATTERIES

2013 ◽  
Vol 06 (02) ◽  
pp. 1350012 ◽  
Author(s):  
LIWEI ZHAO ◽  
JIANGFENG NI ◽  
HAIBO WANG ◽  
LIJUN GAO
Keyword(s):  
Cyclic Voltammetry ◽  
Electrochemical Impedance Spectroscopy ◽  
Electrochemical Properties ◽  
Electrochemical Impedance ◽  
High Capacity ◽  
Rate Capability ◽  
Cycling Performance ◽  
Capacity Retention ◽  
Flux Synthesis ◽  
Promising Electrode Material

Well-crystallized Na0.44MnO2 is readily synthesized via a facile NaCl -flux reaction at 850°C for 5 h. The Na0.44MnO2 material exhibits a well-defined nanoribbon structure with dimension of 50–100 nm in thickness and 200–500 nm in width. Electrochemical properties of as-prepared Na0.44MnO2 are thoroughly investigated on assembled nonaqueous Na0.44MnO2 // Na cells using cyclic voltammetry, galvanostatic test, and electrochemical impedance spectroscopy. The results show that the Na0.44MnO2 nanoribbon material can deliver a high capacity of 106 mAh g-1 with stable cycling performance over 40 cycles. In addition, it exhibits a favorable rate capability, delivering a capacity of 90 mAh g-1 at a rate of 1 C. The high capacity retention combined with acceptable rate capability makes the Na0.44MnO2 a promising electrode material for advanced Na -ion batteries.

Mesoporous CoFe2O4 octahedra with high-capacity and long-life lithium storage properties

RSC Advances ◽  
2016 ◽  
Vol 6 (1) ◽  
pp. 18-22 ◽  
Author(s):  
Jinxue Guo ◽  
Xiaohong Zhang ◽  
Yanfang Sun ◽  
Xiao Zhang
Keyword(s):  
Sol Gel ◽  
High Capacity ◽  
Rate Capability ◽  
Reversible Capacity ◽  
Lithium Storage ◽  
Capacity Retention ◽  
Long Life ◽  
Storage Properties ◽  
Good Rate Capability ◽  
Cycling Life

Mesoporous CoFe2O4 octahedra have been synthesized through sol–gel method, and their large and stable reversible capacity, high capacity retention, good rate capability, and ultralong cycling life have also been demonstrated.

Layer-by-layer assembly modification to prepare firmly bonded Si–graphene composites for high-performance anodes

RSC Advances ◽  
2016 ◽  
Vol 6 (6) ◽  
pp. 4835-4842 ◽  
Author(s):  
Wenhui Zhang ◽  
Lin Wu ◽  
Lijuan Du ◽  
Lu Yue ◽  
Rongfeng Guan ◽  
...  
Keyword(s):  
High Performance ◽  
Retention Rate ◽  
High Capacity ◽  
Rate Capability ◽  
Cycling Performance ◽  
Thermal Reduction ◽  
Layer By Layer ◽  
Capacity Retention ◽  
Graphene Composite ◽  
New Si

A new Si–graphene composite was fabricated by a facile LBL technique followed by thermal reduction, which exhibited excellent cycling performance and rate capability as an anode, showing a high capacity retention rate of 92.0% over 100 cycles.

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