N/O Dual‐Doped Environment‐Friendly Hard Carbon as Advanced Anode for Potassium‐Ion Batteries

Cui, Rong; Xu, Bo; Dong, Hou; Yang, Chun Cheng; Jiang, Qing

doi:10.1002/advs.201902547

Cited by 222 publications

(158 citation statements)

References 56 publications

Supporting

Mentioning

143

Contrasting

Order By: Relevance

“…[112] The NCS electrode provided porous structure and exhibited surface-driven K + storage mechanism with the capacitive feature (take place on the surface region and no obvious plateau region), thus obtaining high-power PIBs with a high rate capability of 154 mAh g −1 at 72 C. Controlling microstructure (interlayers, defects, heteroatom-doping) of hard carbon is regarded as an effective strategy for improving K + storage. Jiang and co-workers [113] prepared three N/O dual-doped porous hard carbon anodes (NOHC-600, NOHC-800, NOHC-1000) with rich K + adsorption sites, and the d 002 were 0.419, 0.411 and 0.398 nm for NOHC-600, NOHC-800 and NOHC-1000, respectively. Defects and heteroatom-doping provided rich K + adsorption site, and expanded interlayers prompt rapid K + intercalation/ deintercalation.…”

Section: Hard Carbonmentioning

confidence: 99%

Carbon Anode Materials: A Detailed Comparison between Na‐ion and K‐ion Batteries

Zhang

Wang

et al. 2021

Advanced Energy Materials

185

138

View full text Add to dashboard Cite

distribution make it difficult to meet the demand of large-scale energy storage device with low cost and high performance. [1,2] Sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs), as "post Li-ion batteries," share similar operation principles and battery device to LIBs. [3-8] In recent years, they have drawn great attention due to obvious advantages such as high sodium/potassium abundance, even distribution and low cost, which are ideal candidates for high-performance secondary batteries in large-scale storage systems. With the continuous development of clean energy technology (including wind energy, solar energy, biomass energy, geotherm energy and water energy) and increasing proportion of clean power generation in the total power generation (the installed capacity of wind energy and solar energy may reach 7059 GW accounting for 49.21% in 2040), smart management of intermittent electricity is increasingly important. [9,10] The generated intermittent electricity needs to be regulated by a smart grid, which can be stored in high-performance SIBs/PIBs during low demand periods and released during peak demand periods, such as electricity supply of slow electric vehicles, residences, manufactories and remote area (Figure 1). [11-13] In some remote mountainous areas, there is no electricity transmission line and therefore SIBs/PIBs energy storage system can provide a continuous electricity supply as a power source. When electricity power is in short supply or out of power, SIBs/PIBs energy storage systems can provide considerable power to keep manufactory running or to power residences. Considering obvious advantages of carbon-based materials, such as abundant sources, low cost and chemical inertness, they show enormous potential as anode materials of SIBs and PIBs. [14-17] Carbon-based materials have different structures (graphite, graphene, hard carbon and soft carbon) and morphologies (0D, 1D, 2D, and 3D, here D represents dimension), [15,18-21] which makes it possible to control these factors of carbon-based materials to meet the demand of highly efficient Na + /K + storage. Graphite delivers two different Na + /K + storage behaviors with theoretical capacities of 35 mAh g −1 (Na + intercalation) and 279 mAh g −1 (K + intercalation), and the high theoretical capacity indicates that graphite is a potential candidate for PIBs. [22,23] Due to high specific surface area and abundant defects, graphene materials (except for pristine single-layered As novel "post lithium-ion batteries," sodium-ion batteries/potassium-ion batteries (SIBs/PIBs) are emerging and show bright prospect in large-scale energy storage applications due to abundant Na/K resources. Further benefits of this technology include, its low cost, chemical inertness and safety. Extensive research findings have demonstrated that carbon-based materials are promising candidates for both SIBs and PIBs. Although the two alkali-ion batteries have similar internal components and electrochemical reaction mechanisms, in carbon-based materials the stora...

show abstract

Section: Hard Carbonmentioning

confidence: 99%

Carbon Anode Materials: A Detailed Comparison between Na‐ion and K‐ion Batteries

Zhang

Wang

et al. 2021

Advanced Energy Materials

185

138

View full text Add to dashboard Cite

show abstract

“…[6,7] In pursuit of novel alternatives to conventional LIBs, room temperature potassium-sulfur (K-S) battery has become a research hotspot due to their advantages of wide availability, great energy, efficiency, and safety. [8,9] Earth-abundant element potassium (2.09 wt%) exhibits a low reduction potential (E°(K + /K) = −2.93 V), [10][11][12][13] which delivers a high operating voltage and improved gravimetric capacity compared with sodium ion batteries. Additionally, the weak Lewis acidity of K + endows them with large mobility in the electrolyte and at the interface.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Insights, Developing Strategies, and Perspectives toward Advanced Potassium–Sulfur Batteries

Yuan

Zhu

Feng

et al. 2020

Small

View full text Add to dashboard Cite

The boosting demand for high-capacity energy storage systems requires innovative battery technologies with low-cost and sustainability. The advancement of potassium-sulfur (K-S) batteries have been triggered recently due to abundant resource and cost effectiveness. However, the functional performance of K-S batteries is fundamentally restricted by the vague understanding of K-S electrochemistry and the imperfect cell components or architectures, facing the issues of low cathode conductivity, intermediate shuttle loss, poor anode stability, electrode volume fluctuation, etc. Inspired by considerable research efforts on rechargeable metal-sulfur batteries, the holistic K-S system can be stabilized and promoted through various strategies on rational physical regulation and chemical engineering. In this review, first an attempt is made to address the electrochemical kinetic concept of K-S system on the basis of the emerging studies. Then, the classification of performance-improving strategies is thoroughly discussed in terms of specific battery component and prospective outlooks in materials optimization, structure innovations, as well as relevant electrochemistry are provided. Finally, the critical perspectives and challenges are discussed to demonstrate the forward-looking developmental directions of K-S batteries. This review not only endeavors to provide a deep understanding of the electrochemistry mechanism and rational designs for high-energy K-S batteries, but also encourages more efforts in their large-scale practical realization.

show abstract

“…Obviously, Bi/CeO x shows the smallest radius of the semicircle ( Figure S27), demonstrating its lowest chargetransfer resistance and enhanced electrocatalytic kinetic. [35,41,44] Meanwhile, the worst performance on CeO x ( Figure S27) implies that the interactions between Bi and CeO x could greatly enhance the electroconductivity and accelerate the charge transfer on Bi/CeO x . Therefore, the fastest rate of charge transfer is achieved over the Bi/CeO x , the adsorbed CO 2 could obtain e À more easily to form CO 2 * À intermediate, and the efficiency of catalytic reactions will be enhanced.…”

Section: Angewandte Chemiementioning

confidence: 99%

Boosting Production of HCOOH from CO₂ Electroreduction via Bi/CeO_x

Duan

Zhou

et al. 2021

Angewandte Chemie

Self Cite

View full text Add to dashboard Cite

Formic acid (HCOOH) is one of the most promising chemical fuels that can be produced through CO 2 electroreduction. However, most of the catalysts for CO 2 electroreduction to HCOOH in aqueous solution often suffer from low current density and limited production rate. Herein, we provide a bismuth/cerium oxide (Bi/CeO x) catalyst, which exhibits not only high current density (149 mA cm À2), but also unprecedented production rate (2600 mmol h À1 cm À2) with high Faradaic efficiency (FE, 92 %) for HCOOH generation in aqueous media. Furthermore, Bi/CeO x also shows favorable stability over 34 h. We hope this work could offer an attractive and promising strategy to develop efficient catalysts for CO 2 electroreduction with superior activity and desirable stability. Excessive CO 2 emission has brought about severe problems related to resources, environment, and climate. Thus, converting CO 2 into valuable chemical fuels attract more and more research attention. [1] Among the various conversion approaches, electrochemical reduction of CO 2 in aqueous media is more favorable because it can make better use of electricity generated from sustainable sources without producing any additional CO 2. [1-5] Nevertheless, low activity, selectivity and stability of catalysts are still the big challenges for CO 2 electroreduction. Therefore, developing efficient electrocatalysts for CO 2 reduction is highly desired. As one of the most attractive CO 2 reduction products, formic acid (HCOOH) is widely identified as a desirable hydrogen carrier. [6-10] Up to now, many metallic catalysts, including Cd, Hg, Pd, Pb, In, Sn and Bi are found to be effective to form HCOOH (or formate) through CO 2 electroreduction. [11-29] However, the activities are still very low even using the toxic or noble metals. As well as we know, the current density and production rate (in H-type reaction cell) by far are less than 80 mA cm À2 , and 1500 mmol h À1 cm À2 , respectively. [11-29] On the other side, high applied potentials and current density always lead to the low Faradaic efficiency (FE) due to the severe competitive hydrogen evolution reaction (HER). [25] Therefore, achieving a low-cost, eco

show abstract

N/O Dual‐Doped Environment‐Friendly Hard Carbon as Advanced Anode for Potassium‐Ion Batteries

Cited by 222 publications

References 56 publications

Carbon Anode Materials: A Detailed Comparison between Na‐ion and K‐ion Batteries

Carbon Anode Materials: A Detailed Comparison between Na‐ion and K‐ion Batteries

Electrochemical Insights, Developing Strategies, and Perspectives toward Advanced Potassium–Sulfur Batteries

Boosting Production of HCOOH from CO₂ Electroreduction via Bi/CeO_x

Contact Info

Product

Resources

About

N/O Dual‐Doped Environment‐Friendly Hard Carbon as Advanced Anode for Potassium‐Ion Batteries

Cited by 222 publications

References 56 publications

Carbon Anode Materials: A Detailed Comparison between Na‐ion and K‐ion Batteries

Carbon Anode Materials: A Detailed Comparison between Na‐ion and K‐ion Batteries

Electrochemical Insights, Developing Strategies, and Perspectives toward Advanced Potassium–Sulfur Batteries

Boosting Production of HCOOH from CO2 Electroreduction via Bi/CeOx

Contact Info

Product

Resources

About

Boosting Production of HCOOH from CO₂ Electroreduction via Bi/CeO_x