AI Article Synopsis
- The study examined how graphene nanoplatelets and reduced graphene oxide affect the performance of valve-regulated lead-acid batteries used in electric bikes.
- Results indicated that batteries with graphene additives showed significantly better low-temperature performance, charge acceptance, and large-current discharge performance, with a cycle life improvement of more than 52%, increasing from 250 to 380 cycles.
- The addition of graphene did not notably increase water loss in the batteries, likely because graphene aids in improving charge/discharge processes and prevents lead sulfate crystal growth.
Article Abstract
The effects of both graphene nanoplatelets and reduced graphene oxide as additives to the negative active material in valve-regulated lead-acid batteries for electric bikes were investigated. Low-temperature performance, charge acceptance, cycle performance, and water loss were investigated. The test results show that the low-temperature performance, charge acceptance, and large-current discharge performance of the batteries with graphene additives were significantly improved compared to the control battery, and the cycle life under 100% depth of discharge condition was extended by more than 52% from 250 to 380 cycles. Meanwhile, the amount of water loss from the batteries with graphene changed only slightly compared with the control cells. The excellent performance of the batteries can be ascribed to the graphene promoting the negative-plate charge and discharge processes and suppressing the growth of lead sulfate crystals.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6644489 | PMC |
| http://dx.doi.org/10.1021/acsomega.8b00353 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Enhanced K-storage kinetics for N-doped carbon via controllable dedoping strategy.
Chemistry
January 2025
Nanjing University of Aeronautics and Astronautics, School of Materials Science and Engineering, 29 Yudao St., 210016, Nanjing, CHINA.
As a potential alternative to next-generation LIBs, carbonous materials have garnered significant attention as anode materials for potassium-ion batteries due to their low cost and environmental friendliness. However, carbonaceous materials cannot fulfill the demand of anode for PIBs, due to volume expansion and poor stability during charging/discharging process. It is well-known that N doping can provide active sites for K-storage, and expand the layer distance between graphite layers.
View Article and Find Full Text PDFLarge-Scale Compatible Roll-to-Roll Coating of Paper Electrodes and Their Compatibility as Lithium-Ion Battery Anodes.
Nanomaterials (Basel)
January 2025
Department of Engineering, Mathematics and Science Education, Mid Sweden University, SE-851 70 Sundsvall, Sweden.
A recyclability perspective is essential in the sustainable development of energy storage devices, such as lithium-ion batteries (LIBs), but the development of LIBs prioritizes battery capacity and energy density over recyclability, and hence, the recycling methods are complex and the recycling rate is low compared to other technologies. To improve this situation, the underlying battery design must be changed and the material choices need to be made with a sustainable mindset. A suitable and effective approach is to utilize bio-materials, such as paper and electrode composites made from graphite and cellulose, and adopt already existing recycling methods connected to the paper industry.
View Article and Find Full Text PDFHigh Capacity and Ultralong Lifespan Aqueous Lithium-Bromine Batteries Realized by Low-Cost Concentrated Electrolyte Coupled with Dependable Lithium Titanium Phosphate.
ACS Appl Mater Interfaces
January 2025
Shaanxi Key Laboratory of Energy Chemical Process Intensification, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China.
Aqueous halogen batteries are gaining recognition for large-scale energy storage due to their high energy density, safety, environmental sustainability, and cost-effectiveness. However, the limited electrochemical stability window of aqueous electrolytes and the absence of desirable carbonaceous hosts that facilitate halogen redox reactions have hindered the advancement of halogen batteries. Here, a low-cost, high-concentration 26 m Li-B-C-O aqueous solution incorporating lithium bromide (LiBr), lithium chloride (LiCl), and lithium acetate (LiOAc) was developed for aqueous batteries, which demonstrated an expanded electrochemical stability window of .
View Article and Find Full Text PDFUnconventional Photocapacitor Utilizing Metal-Organic Dye Capable of Operating in Low Intensity Light.
ACS Appl Mater Interfaces
January 2025
Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar 388120, Gujarat, India.
The development of devices capable of storing energy harnessed from photons is on the rise, owing to the increasing global energy demand for smart systems. The majority of reports in this field cover the use of integrated type devices, which houses a separate photovoltaic module and supercapacitor or battery. Herein, we are reporting a photocapacitor with a simple two-electrode design, capable of operating without a conventional electrolyte or metal ions.
View Article and Find Full Text PDFCerium oxide nanoparticles decorated on graphene oxide nanosheets as battery-type cathode material for supercapacitors.
J Colloid Interface Sci
January 2025
Department of Physics, Malaviya National Institute of Technology Jaipur, Rajasthan 302017 India. Electronic address:
Designing advanced materials that effectively mitigate the poor cycle life of battery-type electrodes with high specific capacities is crucial for next-generation energy storage systems. Herein, graphene oxide-ceria (GO-CeO) nanocomposite synthesized via a facile wet chemical route is explored as cathode for high-performance supercapacitors. The morphological analysis suggests fine ceria (CeO) nanoparticles dispersed over ultrathin graphene oxide (GO) sheets while structural studies reveal face-centered cubic phase of CeO in the nanocomposite.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!