scholarly journals Development of a Li-Ion Capacitor Pouch Cell Prototype by Means of a Low-Cost, Air-Stable, Solution Processable Fabrication Method

2021 ◽  
Author(s):  
Dhrubajyoti Bhattacharjya ◽  
Maria Arnaiz ◽  
Maria Canal Rodriguez ◽  
Silvia Martin ◽  
Tandra Panja ◽  
...  
Keyword(s):  
Low Cost ◽  
Stable Solution ◽  
Accelerated Aging ◽  
Positive Electrode ◽  
Fabrication Method ◽  
Active Electrode ◽  
Energy Storage Technology ◽  
Li Ion ◽  
Solution Processable ◽  
High Specific Energy

Abstract Due to the dual advantage of capacitive and faradaic charge storage mechanisms, Li-ion capacitors (LICs) are regarded as promising energy storage technology for many high-power applications. However, the high cost and intricacy of indispensable pre-lithiation step in LIC fabrication are the major stumbling block against its widespread commercial interest. In this regard, operando pre-lithiation through incorporating lithium-containing sacrificial salt in the positive electrode holds high potential to solve this issue. Herein, we present an industrially compatible fabrication method based on a solution-processable positive electrode consisting of an activated carbon mixed with a low-cost, air-stable dilithium squarate as sacrificial salt. Through careful optimization of electrode design, laboratory-scale cells are up-scaled to pouch cell prototypes. Fabricated LIC pouch cells deliver high specific energy (i.e. max. 58 Wh kg-1AM) and power (i.e. max. 8190 W kg-1AM) with respect to active electrode mass. Moreover, cycle life and floating tests performed at room temperature show capacitance retention of 83 % after 80000 charge-discharge cycles and 100 % retention after 1000 floating hours at 3.8 V. However, the accelerated aging tests at 70 ºC induce fast device failure. Post-mortem analyses reveal different ageing mechanisms for cycled and floated LIC pouch cells.

scholarly journals Intensification of Pseudocapacitance by Nanopore Engineering on Waste-Bamboo-Derived Carbon as a Positive Electrode for Lithium-Ion Batteries

Materials ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 2733
Author(s):  
Jong Chan Hyun ◽  
Jin Hwan Kwak ◽  
Min Eui Lee ◽  
Jaewon Choi ◽  
Jinsoo Kim ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Nanoporous Carbon ◽  
Positive Electrode ◽  
High Rate ◽  
Active Electrode ◽  
Voltage Range ◽  
High Specific Energy

Nanoporous carbon, including redox-active functional groups, can be a promising active electrode material (AEM) as a positive electrode for lithium-ion batteries owing to its high electrochemical performance originating from the host-free surface-driven charge storage process. This study examined the effects of the nanopore size on the pseudocapacitance of the nanoporous carbon materials using nanopore-engineered carbon-based AEMs (NE-C-AEMs). The pseudocapacitance of NE-C-AEMs was intensified, when the pore diameter was ≥2 nm in a voltage range of 1.0~4.8 V vs Li+/Li under the conventional carbonate-based electrolyte system, showing a high specific capacity of ~485 mA·h·g−1. In addition, the NE-C-AEMs exhibited high rate capabilities at current ranges from 0.2 to 4.0 A·g−1 as well as stable cycling behavior for more than 300 cycles. The high electrochemical performance of NE-C-AEMs was demonstrated by full-cell tests with a graphite nanosheet anode, where a high specific energy and power of ~345 Wh·kg−1 and ~6100 W·Kg−1, respectively, were achieved.

Green water-based binders for LiFePO4/C cathode in Li-ion batteries: a comparative study

2021 ◽  
Author(s):  
Xiaojing Zhang ◽  
xinyi Ge ◽  
Zhigang Shen ◽  
Han Ma ◽  
Jingshi Wang ◽  
...  
Keyword(s):  
Comparative Study ◽  
Polyvinylidene Fluoride ◽  
Low Cost ◽  
Green Water ◽  
Li Ion Batteries ◽  
Environmental Friendliness ◽  
Water Based ◽  
Li Ion

Compared with environmentally harmful binder polyvinylidene fluoride (PVDF) in Li-ion batteries (LIBs), water-based binders have many advantages, such as low cost, rich sources and environmental friendliness. In this study, various...

Novel low-cost, high-energy-density (>700 Wh kg−1) Li-rich organic cathodes for Li-ion batteries

2021 ◽  
Vol 415 ◽  
pp. 128509
Author(s):  
Qihang Yu ◽  
Wu Tang ◽  
Yang Hu ◽  
Jian Gao ◽  
Ming Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Li Ion

Organic electrode materials for non-aqueous, aqueous, and all-solid-state Na-ion batteries

2021 ◽  
Author(s):  
Kathryn Holguin ◽  
Motahareh Mohammadiroudbari ◽  
Kaiqiang Qin ◽  
Chao Luo
Keyword(s):  
Solid State ◽  
High Performance ◽  
Electrode Materials ◽  
Low Cost ◽  
Li Ion Batteries ◽  
Organic Electrode ◽  
Li Ion

Na-ion batteries (NIBs) are promising alternatives to Li-ion batteries (LIBs) due to the low cost, abundance, and high sustainability of sodium resources. However, the high performance of inorganic electrode materials...

Effect of Li Source on Charge/Discharge Performance of LiFePO4

2012 ◽  
Vol 509 ◽  
pp. 51-55
Author(s):  
Hong Quan Liu ◽  
Fei Xiang Hao ◽  
Yi Jie Gu ◽  
Yun Bo Chen
Keyword(s):  
Low Cost ◽  
Utilization Efficiency ◽  
Ion Diffusion ◽  
Diffusion Distance ◽  
Pore Characteristics ◽  
Discharge Performance ◽  
High Theoretical Capacity ◽  
Low Toxicity ◽  
Li Ion ◽  
Potential Plateau

LiFePO4 has been considered as the most promising positive electrode due to its low cost, high theoretical capacity, stability and low toxicity, all highly required in vehicle applications. In this work, LiFePO4 compound was synthesized by the solid carbothermic reduction reactions with different Li resource. The pure LiFePO4 phase was confirmed for all samples by analysis of the XRD results. The different morphologies were obtained due to different Li resources. The potential plateau of all samples is in the range from 3V to 4V. The sample (LiCO3 as the Li resource) has a higher discharge capacity of 118mAhg−1 at 0.2C 20% greater than that of the sample (LiOH as the Li resource). The reason comes maybe from nano pore characteristics, which reduce Li ion diffusion distance, and increase the utilization efficiency of material.

Recovery Value Metals from Mixed Spent Li-Ion Batteries

2014 ◽  
Vol 540 ◽  
pp. 267-271
Author(s):  
Xin Liu ◽  
Lin Yan Li ◽  
Fan Yun Zeng ◽  
Xue Jun Wang ◽  
Sheng Ming Xu
Keyword(s):  
Solvent Extraction ◽  
Raw Materials ◽  
Low Cost ◽  
Rapid Development ◽  
Li Ion Batteries ◽  
Active Materials ◽  
Solid Ratio ◽  
Li Ion ◽  
Leaching Condition ◽  
Addition Amount

With the rapid development and wide application of Li-ion batteries, cathode materials containing value metals Co, Ni and Mn are blended by several kind of metal oxide presently for pursuing high safe stability and low cost. The composition of spent Li-ion batteries has become complicated and optimum leaching condition varied. In this paper, leaching process for the mixture of pure LiCoO2and Li (Ni1/3Co1/3Mn1/3)O2was studied. With an increase in component of LiCoO2in mixed materials, the optimum leaching condition varied as: temperature from 60°C to 90°C, H2O2addition amount from 0.54 to 0.75ml/g and liquid-solid ratio from 10 to 20. According to this result, a real mixed spent batteries materials was recovered by being leached in 2M H2SO4at temperature of 90°C, liquid-solid ratio 20 and 0.6ml/g H2O2added. The leaching efficiencies of Co, Ni, Mn, Li were 96.88%, 93.71%, 92.12%, 99.43% respectively. Cu, Al and Fe in solution were removed by precipitation and solvent extraction. Finally, Ni, Co, Mn were extracted by D2EHPA for separating with Na+and other impurities, which is used as a raw materials for preparation of cathode active materials in batteries.

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