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Carbon Potassium Ion Batteries - Europe PMC

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Last Updated: 06 August 2022

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Reversible Oxygen-Rich Functional Groups Grafted 3D Honeycomb-Like Carbon Anode for Super-Long Potassium Ion Batteries.

-1 after 10,000 cycles and ultra-long cycle time of over 18 months at 100 mA g -1, the OFGC electrode with steady structure and rich functional groups can greatly contribute to capacity expansion and the development of a solid electrolyte interphase film with high reversible capacity and the production of a long lasting cycle time over 18 months. Full cells made by Prussian blue cathode have a high energy density of 113 Wh kg-1 after 800 cycles, and the light-emitting diodes lamp and ear thermometer are running.

Source link: https://europepmc.org/article/MED/35861905


Sb-Doped metallic 1T-MoS 2 nanosheets embedded in N-doped carbon as high-performance anode materials for half/full sodium/potassium-ion batteries.

Due to its high conductivity, which can increase electron transfer, Metal 1T phase molybdenum disulfide is being increasingly considered as a promising anode. We've developed a robust Sb-doped metallic 1T phase molybdenum sulfide with a few-layered nanosheet structure herein, using a simple calcination process. 1T-MoS 2 -Sb has demonstrated a reversible capacity of 493 mA g -1 at 0. 1 A g -1 after 100 cycles and is known for its long-term results as well as good rate capability. It's one of the best results of a MoS 2 -based full cell for SIBs, and it's displayed a superior capacity of 242 mA g -1 over 100 cycles. This simple plan will give new insight into developing T-phase advanced anode materials for SIBs/PIBs.

Source link: https://europepmc.org/article/MED/35851800


N-doped pinecone-based carbon with a hierarchical porous pie-like structure: a long-cycle-life anode material for potassium-ion batteries.

nitrogen-doped PC was prepared by carbonization in molten ZnCl 2 with urea as a nitrogen source in this research. A project based on synergistic results between N doping and ZnCl 2 molten salt was used to produce a hierarchically porous pie-like NPC with abundant defects and active locations, increase K+ adsorption, promote K+ intercalation/diffusion, and minimize the effects of volume expansion.

Source link: https://europepmc.org/article/MED/35919586


Amorphous Tellurium-Embedded Hierarchical Porous Carbon Nanofibers as High-Rate and Long-Life Electrodes for Potassium-Ion Batteries.

Because of its inherent electrical conductivity and ultra-high theoretical volumetric capacity, Tellurium is a promising electrode active material for potassium-ion batteries. At 14C and ultra-long life for 4500 cycles at 7C, the free-standing Te@HPCNFs electrode renders an outstanding K-ion storage service with a high-rate capacity of 1294. 4 mAh cm -3, and full batteries coupled with a KSn alloy anode also exhibit excellent cycling durability, with good cyclability. Such a superior result results result comes from HPCNF's space confinement to load amorphous Te in the micropores for accommodating the volume increase, where interconnected conductive frameworks and residual hierarchical pores enable fast ion/electron diffusion kinetics. The conversion of Te from the electrode is effectively blocked, according to in situ UV-vis absorption spectra, and ex situ X-ray photoelectron spectroscopy results reveal the conversion of Te into K 5 Te 3 and K 2 Te.

Source link: https://europepmc.org/article/MED/35810453


Boron-Doped Pine-Cone Carbon With 3D Interconnected Porosity for Use as an Anode for Potassium-Ion Batteries With Long Life Cycle.

Potassium-ion batteries have drew widespread interest as an alternative to lithium-ion batteries due to their low cost and abundance of potassium. To ensure structural stability and good electrochemical performance, it is therefore necessary to ensure structural stability and high electrochemical stability. In ZnCl 2 molten-salt by calcination at high temperatures, this research provided boron-doped pine-cone carbon with 3D interconnected hierarchical porous.

Source link: https://europepmc.org/article/MED/35873058


Insight into a Nitrogen-Doping Mechanism in a Hard-Carbon-Microsphere Anode Material for the Long-Term Cycling of Potassium-Ion Batteries.

Due to the cost-effectiveness of potassium deposits and the relatively low redox potential of K+ /K, one of the alternatives to lithium-ion batteries has piqued considerable attention. In addition, the nitrogen-doping N-SHC powder exhibits excellent cycling long-term stability, where the N-SHC electrode maintains a high reversibility capacity at 200 mAh g -1 with a capacity retention of 81% after 600 cycles. DFT estimates estimate the change in K ions' absorption energy and diffusion barriers at different N-doping effects.

Source link: https://europepmc.org/article/MED/35744314


Recent Progress of Carbon-Based Anode Materials for Potassium Ion Batteries.

With the increasing demand for clean energy, rechargeable batteries with K+, carriers have attracted a lot of attention due to their advantages of expandability and low cost. The key to the manufacture of potassium ion batteries is high-performance anode materials, which are essential to their success and availability. In recent years, this article examines the latest findings on carbon based anode materials' use in recent years. Lastly, the future growth and outlook of advanced carbons for next-generation PIBs are suggested.

Source link: https://europepmc.org/article/MED/35701096


Synthesis of KVPO 4 F/Carbon Porous Single Crystalline Nanoplates for High-Rate Potassium-Ion Batteries.

KVPO 4 F is a potential high energy density cathode material for potassium-ion batteries, with high theoretical capacity and operating voltage.

Source link: https://europepmc.org/article/MED/35671041

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions