scholarly journals Redox Polymers as Electrode-Active Materials for Batteries

2019 ◽  
Vol 01 (01) ◽  
pp. 063-070 ◽  
Author(s):  
Birgit Esser
Keyword(s):  
Cathode Materials ◽  
Renewable Resources ◽  
Rate Capability ◽  
Review Article ◽  
Redox Polymers ◽  
Active Materials ◽  
High Discharge ◽  
Low Toxicity ◽  
New Generation ◽  
Lower Discharge

Organic cathode materials are promising candidates for a new generation of ‘green batteries’, since they have low toxicity and can be produced from renewable resources or from petroleum. This review shows that organic redox polymers can show excellent battery performance regarding cycling stability and rate capability, and attractive specific capacities are accessible. Radical polymers and redox polymers based on heteroaromatics demonstrate superior rate capabilities and cycling stabilities at fast C-rates as well as high discharge potentials of 3–4 V versus Li/Li+, while quinone- or imide-based polymers deliver high specific capacities of up to 260 mAh g−1 with stable cycling at moderate C-rates and lower discharge potentials. This review article highlights the underlying design principles showcasing selected examples of well-performing redox polymers.

An interfacial framework for breaking through the Li-ion transport barrier of Li-rich layered cathode materials

2017 ◽  
Vol 5 (46) ◽  
pp. 24292-24298 ◽  
Author(s):  
Yu Zheng ◽  
Lai Chen ◽  
Yuefeng Su ◽  
Jing Tan ◽  
Liying Bao ◽  
...  
Keyword(s):  
Ion Transport ◽  
Cathode Materials ◽  
Rate Capability ◽  
High Rate ◽  
Layered Crystal ◽  
High Rate Capability ◽  
Transport Barrier ◽  
Layered Cathode Materials ◽  
Li Ion

A spinel structured interfacial framework was derived within a host layered crystal, resulting in excellent high-rate capability of Li-rich materials.

scholarly journals High Discharge Rate Lithium Ion Batteries with the Composite Cathode of LiFePO4/Mesocarbon Nanobead

2010 ◽  
Vol 177 ◽  
pp. 208-210
Author(s):  
Yi Jie Gu ◽  
Cui Song Zeng ◽  
Yu Bo Chen ◽  
Hui Kang Wu ◽  
Hong Quan Liu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Room Temperature ◽  
Discharge Rate ◽  
Rate Capability ◽  
Lithium Ion ◽  
Composite Cathode ◽  
Rate Performance ◽  
High Discharge ◽  
High Discharge Rate ◽  
Lifepo4 Cathode

Olivine compounds LiFePO4 were prepared by the solid state reaction, and the electrochemical properties were studied with the composite cathode of LiFePO4/mesocarbon nanobead. High discharge rate performance can be achieved with the designed composite cathode of LiFePO4/mesocarbon nanobead. According to the experiment results, batteries with the composite cathode deliver discharge capacity of 1087mAh for 18650 type cell at 20C discharge rate at room temperature. The analysis shows that the uniformity of mesocarbon nanobead around LiFePO4 can supply enough change for electron transporting, which can enhance the rate capability for LiFePO4 cathode lithium ion batteries. It is confirmed that lithium ion batteries with LiFePO4 as cathode are suitable to electric vehicle application.

Tris(trimethylsilyl) phosphite (TMSPi) as an electrolyte additive for LiNi0.5Co0.2Mn0.3O2 cathode materials at elevated voltage and temperature

2021 ◽  
Author(s):  
Xiao Yu ◽  
Zhiyong Yu ◽  
Jishen Hao ◽  
Hanxing Liu
Keyword(s):  
Discharge Capacity ◽  
Cathode Materials ◽  
Solid Electrolyte Interphase ◽  
Rate Capability ◽  
Electrochemical Performances ◽  
Initial Discharge Capacity ◽  
Capacity Retention ◽  
Electrolyte Additive ◽  
Interface Impedance ◽  
Initial Discharge

Electrolyte additive tris(trimethylsilyl) phosphite (TMSPi) was used to promote the electrochemical performances of LiNi[Formula: see text]Co[Formula: see text]Mn[Formula: see text]O2 (NCM523) at elevated voltage (4.5 V) and temperature (55[Formula: see text]C). The NCM523 in 2.0 wt.% TMSPi-added electrolyte exhibited a much higher capacity (166.8 mAh/g) than that in the baseline electrolyte (118.3 mAh/g) after 100 cycles under 4.5 V at 30[Formula: see text]C. Simultaneously, the NCM523 with 2.0 wt.% TMSPi showed superior rate capability compared to that without TMSPi. Besides, after 100 cycles at 55[Formula: see text]C under 4.5 V, the discharge capacity retention reached 87.4% for the cell with 2.0 wt.% TMSPi, however, only 24.4% of initial discharge capacity was left for the cell with the baseline electrolyte. A series of analyses (TEM, XPS and EIS) confirmed that TMSPi-derived solid electrolyte interphase (SEI) stabilized the electrode/electrolyte interface and hindered the increase of interface impedance, resulting in obviously enhanced electrochemical performances of NCM523 cathode materials under elevated voltage and/or temperature.

Cu-ion induced self-polymerization of Cu phthalocyanine to prepare low-cost organic cathode materials for Li-ion batteries with ultra-high voltage and ultra-fast rate capability

2021 ◽  
Author(s):  
Haichang Zhang ◽  
Rui Zhang ◽  
Xingjiang Liu ◽  
Fei Ding ◽  
Chunsheng Shi ◽  
...  
Keyword(s):  
High Voltage ◽  
Cathode Materials ◽  
Fast Rate ◽  
Low Cost ◽  
Rate Capability ◽  
Li Ion Batteries ◽  
Practical Application ◽  
Battery Materials ◽  
Li Ion ◽  
Synthesis Routes

High cost, complex synthesis routes and low yield are pressing challenges hindering the practical application of organic battery materials. Herein, copper(II) phthalocyanine (CuPc), one of the most frequently used blue...

Tunneling-assisted highly sensitive and stable lead-free Cs3Bi2I9 perovskite photodetectors for diffuse reflection imaging

2021 ◽  
Author(s):  
Wanjun Li ◽  
Yujin Liu ◽  
Yuxin Gao ◽  
Zhong Ji ◽  
Yong Fu ◽  
...  
Keyword(s):  
Diffuse Reflection ◽  
Lead Free ◽  
Active Materials ◽  
Highly Sensitive ◽  
Low Toxicity ◽  
Reflection Imaging

Lead-free perovskites exhibit low toxicity and have been investigated as new active materials for photoconversion applications.

Preparation and Characterization of High-Voltage Cathode Material LiNi0.5Mn1.5O4 for Lithium Ion Batteries

2019 ◽  
Vol 953 ◽  
pp. 121-126
Author(s):  
Zhe Chen ◽  
Quan Fang Chen ◽  
Sha Ne Zhang ◽  
Guo Dong Xu ◽  
Mao You Lin ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Synthesis Method ◽  
Rate Capability ◽  
Lithium Ion ◽  
Diffusion Path ◽  
High Energy ◽  
High Energy Density ◽  
Charge Discharge

High energy density and rechargeable lithium ion batteries are attracting widely interest in renewable energy fields. The preparation of the high performance materials for electrodes has been regarded as the most challenging and innovative aspect. By utilizing a facile combustion synthesis method, pure nanostructure LiNi0.5Mn1.5O4 cathode material for lithium ion batteries were successfully fabricated. The crystal phase of the samples were characterized by X-Ray Diffraction, and micro-morphology as well as electrochemistry properties were also evaluated using FE-SEM, electrochemical charge-discharge test. The result shows the fabricated LiNi0.5Mn1.5O4 cathode materials had outstanding crystallinity and near-spherical morphologies. That obtained LiNi0.5Mn1.5O4 samples delivered an initial discharge capacity of 137.2 mAhg-1 at the 0.1 C together with excellent cycling stability and rate capability as positive electrodes in a lithium cell. The superior electrochemical performance of the as-prepared samples are owing to nanostructure particles possessing the shorter diffusion path for Li+ transport, and the nanostructure lead to large contact area to effectively improve the charge/discharge properties and the rate property. It is demonstrated that the as-prepared nanostructure LiNi0.5Mn1.5O4 samples have potential as cathode materials of lithium-ion battery for future new energy vehicles.

A sulfur–eugenol allyl ether copolymer: a material synthesized via inverse vulcanization from renewable resources and its application in Li–S batteries

2017 ◽  
Vol 1 (9) ◽  
pp. 1818-1822 ◽  
Author(s):  
Alexander Hoefling ◽  
Dan Thien Nguyen ◽  
Young Joo Lee ◽  
Seung-Wan Song ◽  
Patrick Theato
Keyword(s):  
Cathode Materials ◽  
Renewable Resources ◽  
Elemental Sulfur ◽  
Polymeric Materials ◽  
Allyl Ether

Polymeric materials based on abundant elemental sulfur and renewable eugenol show enhanced cyclability as cathode materials in Li–S batteries.

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