A Simple and Low‐Cost Method to Synthesize Cr‐Doped α‐Fe 2 O 3 Electrode Materials for Lithium‐Ion Batteries

2019 ◽  
Vol 6 (3) ◽  
pp. 856-864 ◽  
Author(s):  
Huan Liu ◽  
Shao‐hua Luo ◽  
Dong‐xu Zhang ◽  
Dong‐bei Hu ◽  
Ting‐Feng Yi ◽  
...  
2014 ◽  
Vol 2 (45) ◽  
pp. 19383-19395 ◽  
Author(s):  
M. Kalapsazova ◽  
R. Stoyanova ◽  
E. Zhecheva ◽  
G. Tyuliev ◽  
D. Nihtianova

The capability of sodium deficient nickel manganese oxides to participate in reactions of Li+intercalation and Na+/Li+exchange allows their use as low-cost electrode materials in lithium cells.


Recycling ◽  
2020 ◽  
Vol 5 (4) ◽  
pp. 26
Author(s):  
Jonas Henschel ◽  
Maximilian Mense ◽  
Patrick Harte ◽  
Marcel Diehl ◽  
Julius Buchmann ◽  
...  

The lithium-ion battery is the most powerful energy storage technology for portable and mobile devices. The enormous demand for lithium-ion batteries is accompanied by an incomplete recycling loop for used lithium-ion batteries and excessive mining of Li and transition metals. The hyperaccumulation of plants represents a low-cost and green technology to reduce environmental pollution of landfills and disused mining regions with low environmental regulations. To examine the capabilities of these approaches, the hyperaccumulation selectivity of Alyssum murale for metals in electrode materials (Ni, Co, Mn, and Li) was evaluated. Plants were cultivated in a conservatory for 46 days whilst soils were contaminated stepwise with dissolved transition metal species via the irrigation water. Up to 3 wt% of the metals was quantified in the dry matter of different plant tissues (leaf, stem, root) by means of inductively coupled plasma-optical emission spectroscopy after 46 days of exposition time. The lateral distribution was monitored by means of micro X-ray fluorescence spectroscopy and laser ablation-inductively coupled plasma-mass spectrometry, revealing different storage behaviors for low and high metal contamination, as well as varying sequestration mechanisms for the four investigated metals. The proof-of-concept regarding the phytoextraction of metals from LiNi0.33Co0.33Mn0.33O2 cathode particles in the soil was demonstrated.


Author(s):  
Han Yeu Ling ◽  
Hao Chen ◽  
Shanqing Zhang ◽  
Zhenzhen Wu ◽  
Luke Hencz ◽  
...  

Sustainable, non-toxic, and low-cost bio-derived materials (BDMs) have interesting structures, complex compositions, and unique functional groups and have been used as electrode materials, separators, interlayers, and binders in lithium ion...


Author(s):  
Kei Kubota ◽  
Masahiro Miyazaki ◽  
Eun Jeong Kim ◽  
Hiroaki Yoshida ◽  
Prabeer Barpanda ◽  
...  

Sodium-ion batteries can be designed as a low-cost alternative to lithium-ion batteries, where various layered transition metal oxides are frontrunner positive electrode materials. Owing to the inexpensive and abundant Mn...


Molecules ◽  
2022 ◽  
Vol 27 (2) ◽  
pp. 396
Author(s):  
Jie Wang ◽  
Qin Hu ◽  
Wenhui Hu ◽  
Wei Zhu ◽  
Ying Wei ◽  
...  

Iron oxides are potential electrode materials for lithium-ion batteries because of their high theoretical capacities, low cost, rich resources, and their non-polluting properties. However, iron oxides demonstrate large volume expansion during the lithium intercalation process, resulting in the electrode material being crushed, which always results in poor cycle performance. In this paper, to solve the above problem, iron oxide/carbon nanocomposites with a hollow core–shell structure were designed. Firstly, an Fe2O3@polydopamine nanocomposite was prepared using an Fe2O3 nanocube and dopamine hydrochloride as precursors. Secondly, an Fe3O4@N-doped C composite was obtained by means of further carbonization treatment. Finally, Fe3O4@void@N-Doped C-x composites with core–shell structures with different void sizes were obtained by means of Fe3O4 etching. The effect of the etching time on the void size was studied. The electrochemical properties of the composites when used as lithium-ion battery materials were studied in more detail. The results showed that the sample that was obtained via etching for 5 h using 2 mol L−1 HCl solution at 30 °C demonstrated better electrochemical performance. The discharge capacity of the Fe3O4@void@N-Doped C-5 was able to reach up to 1222 mA g h−1 under 200 mA g−1 after 100 cycles.


2021 ◽  
Author(s):  
Sheng Lei ◽  
Yanying Dong ◽  
Yu Dou ◽  
Xiaofang Zhang ◽  
Qing Zhang ◽  
...  

The sustainable development of lithium-ion batteries (LIBs) urges electrode materials being low-cost, richly sourced, environmentally benign, and with recycling capability. Polyimides (PIs) as a promising alternative to transition-metal-based cathodes for...


Author(s):  
Shaohua Lu ◽  
Weidong Hu ◽  
Xiaojun Hu

Due to their low cost and improved safety compared to lithium-ion batteries, sodium-ion batteries have attracted worldwide attention in recent decades.


Crystals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 47
Author(s):  
Yiqiu Xiang ◽  
Ling Xin ◽  
Jiwei Hu ◽  
Caifang Li ◽  
Jimei Qi ◽  
...  

Extensive use of fossil fuels can lead to energy depletion and serious environmental pollution. Therefore, it is necessary to solve these problems by developing clean energy. Graphene materials own the advantages of high electrocatalytic activity, high conductivity, excellent mechanical strength, strong flexibility, large specific surface area and light weight, thus giving the potential to store electric charge, ions or hydrogen. Graphene-based nanocomposites have become new research hotspots in the field of energy storage and conversion, such as in fuel cells, lithium-ion batteries, solar cells and thermoelectric conversion. Graphene as a catalyst carrier of hydrogen fuel cells has been further modified to obtain higher and more uniform metal dispersion, hence improving the electrocatalyst activity. Moreover, it can complement the network of electroactive materials to buffer the change of electrode volume and prevent the breakage and aggregation of electrode materials, and graphene oxide is also used as a cheap and sustainable proton exchange membrane. In lithium-ion batteries, substituting heteroatoms for carbon atoms in graphene composite electrodes can produce defects on the graphitized surface which have a good reversible specific capacity and increased energy and power densities. In solar cells, the performance of the interface and junction is enhanced by using a few layers of graphene-based composites and more electron-hole pairs are collected; therefore, the conversion efficiency is increased. Graphene has a high Seebeck coefficient, and therefore, it is a potential thermoelectric material. In this paper, we review the latest progress in the synthesis, characterization, evaluation and properties of graphene-based composites and their practical applications in fuel cells, lithium-ion batteries, solar cells and thermoelectric conversion.


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