Activated carbon from the graphite with increased rate capability for the potassium ion battery

Tai, Zhixin; Zhang, Qing; Liu, Huan; Dou, Shi Xue

doi:10.1016/j.carbon.2017.07.041

Cited by 263 publications

(160 citation statements)

References 17 publications

Supporting

Mentioning

157

Contrasting

Order By: Relevance

“…Figure 7a and Table 4 show that increasing the biochar-to-KOH ratio increases the atomic percentages of O (from 16.6% to 24.2%) and decreases the atomic percentages of C (80% to 70.7%). Similar trends were confirmed by Tai et al [46] for synthesizing activated carbon from graphite using different KOH ratios. The atomic percentage of Si also slightly increased (from 2.3% to 4.2%) with increasing ratios.…”

Section: Resultssupporting

confidence: 87%

High-Surface-Area Mesoporous Activated Carbon from Hemp Bast Fiber Using Hydrothermal Processing

Hossain

et al. 2018

View full text Add to dashboard Cite

Synthesis of activated carbon from waste biomass is of current interest towards sustainability. The properties of biomass-derived activated carbon largely depend on the carbonization process. This study reports the preparation of mesoporous activated carbon with extremely high surface area from hemp bast fiber using hydrothermal processing. Hot water processing (390-500 • C) followed by activation using KOH and NaOH was investigated at different mass ratios. The described approach was found to enhance the mesoporosity (centered at 3.0 to 4.5 nm) of the hemp-derived activated carbon (HAC) from activation [confirmed by BJH (Barrett-Joyner-Halenda) pore size distribution and TEM (transmission electron microscopy) imaging]. BET (Brunauer-Emmett-Teller) results showed that the product has an extremely high surface area (2425 m 2 /g) while the surface functional groups (-OH, -COOH, C=C/C-C) were confirmed by FTIR (Fourier transform infrared spectroscopy) and further quantified by XPS (X-ray photoelectron spectroscopy). Increasing KOH concentration was found to enhance the surface area with a maximum biochar-to-KOH (g/g) ratio of 1:3. The crystallite domain size of HAC was determined using Raman spectroscopy of different wavelengths. The procedure described in this study is an environmentally friendly scalable route for the mass production of activated carbon using hemp fiber.

show abstract

Section: Resultssupporting

confidence: 87%

High-Surface-Area Mesoporous Activated Carbon from Hemp Bast Fiber Using Hydrothermal Processing

Hossain

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Figure 7a and Table 4 show that increasing the biochar to KOH ratio increases the atomic percentages of O (from 16.6 to 24.2%) and decreases the atomic percentages of C (80 to 70.7%). Similar trends were confirmed by Tai et al [43] for synthesizing activated carbon from graphite using different KOH ratios. The atomic percentage of Si also slightly increased (from 2.3 to 4.2%) with increasing ratios.…”

Section: Resultssupporting

confidence: 87%

High Surface Area Mesoporous Activated Carbon from Hemp Bast Fibre Using Hydrothermal Processing

Hossain¹,

Wu²,

Xu³

et al. 2018

Preprint

View full text Add to dashboard Cite

Synthesis of activated carbon from waste biomass is of current interest towards sustainability.The properties of biomass derived activated carbon largely depends on the carbonization process. This study reports preparing extremel high surface area mesoporous activated carbon from hemp bast fibre using hydrothermal processing. Processing in hot water (390-500 o C), then activation using KOH and NaOH was investigated at different loading ratios. The described approach was found to enhance the mesoporosity (centered at 3.0 to 4.5 nm) of the hemp derived activated carbon (HAC) from activation (confirmed by BJH pore size distribution and TEM imaging). BET results showed that the product has an extremely high surface area (2425 m 2 /g) while the surface functional groups (-OH, COOH, C=C/C-C) were confirmed and quantified by XPS and FTIR results. Increasing KOH concentration was found to enhance the surface area with an optimum biochar to KOH ratio of 1:3. The crystallite domain size of HAC was determined using Raman spectroscopy of different wavelengths. The procedure described in this study is an environmentally friendly scalable route for the mass production of activated carbon using hemp fiber.

show abstract

“…Therefore, sodium‐ion batteries (SIBs) and potassium‐ion batteries (PIBs), with analogical energy storage behavior to LIBs, have sparked significant attention and are considered as promising alternatives to LIBs, ascribed to their competitive cost, appropriate redox potential, along with inexhaustible sodium/potassium reserves, which can be more able to meet the urgent demands of large‐scale energy storage markets . However, the radius of Na + /K + is larger than that of Li + , which might account for high diffusion barriers and severe volume variations, leading to cyclic instability and inferior rate capability . Therefore, designing various anode composites that can provide fast kinetics and admirable charge/discharge capacities is fast becoming a pressing task.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Ultra‐Small Few‐Layer Nanostructured MoSe₂ Embedded on N, P Co‐Doped Bio‐Carbon for High‐Performance Half/Full Sodium‐Ion and Potassium‐Ion Batteries

Ling

Kang

Luo

et al. 2019

Chemistry A European J

View full text Add to dashboard Cite

Sodium/potassium‐ion batteries (SIBs/PIBs) arouse intensive interest on account of the natural abundance of sodium/potassium resources, the competitive cost and appropriate redox potential. Nevertheless, the huge challenge for SIBs/PIBs lies in the scarcity of an anode material with high capacity and stable structure, which are capable of accommodating large‐size ions during cycling. Furthermore, using sustainable natural biomass to fabricate electrodes for energy storage applications is a hot topic. Herein, an ultra‐small few‐layer nanostructured MoSe2 embedded on N, P co‐doped bio‐carbon is reported, which is synthesized by using chlorella as the adsorbent and precursor. As a consequence, the MoSe2/NP‐C‐2 composite represents exceedingly impressive electrochemical performance for both sodium‐ion batteries (SIBs) and potassium‐ion batteries (PIBs). It displays a promising reversible capacity (523 mAh g−1 at 100 mA g−1 after 100 cycles) and impressive long‐term cycling performance (192 mAh g−1 at 5 A g−1 even after 1000 cycles) in SIBs, which are some of the best properties of MoSe2‐based anode materials for SIBs to date. To further probe the great potential applications, full SIBs pairing the MoSe2/NP‐C‐2 composite anode with a Na3V2(PO4)3 cathode also exhibits a satisfactory capacity of 215 mAh g−1 at 500 mA g−1 after 100 cycles. Moreover, it also delivers a decent reversible capacity of 131 mAh g−1 at 1 A g−1 even after 250 cycles for PIBs.

show abstract

Activated carbon from the graphite with increased rate capability for the potassium ion battery

Cited by 263 publications

References 17 publications

High-Surface-Area Mesoporous Activated Carbon from Hemp Bast Fiber Using Hydrothermal Processing

High-Surface-Area Mesoporous Activated Carbon from Hemp Bast Fiber Using Hydrothermal Processing

High Surface Area Mesoporous Activated Carbon from Hemp Bast Fibre Using Hydrothermal Processing

Facile Synthesis of Ultra‐Small Few‐Layer Nanostructured MoSe₂ Embedded on N, P Co‐Doped Bio‐Carbon for High‐Performance Half/Full Sodium‐Ion and Potassium‐Ion Batteries

Contact Info

Product

Resources

About

Activated carbon from the graphite with increased rate capability for the potassium ion battery

Cited by 263 publications

References 17 publications

High-Surface-Area Mesoporous Activated Carbon from Hemp Bast Fiber Using Hydrothermal Processing

High-Surface-Area Mesoporous Activated Carbon from Hemp Bast Fiber Using Hydrothermal Processing

High Surface Area Mesoporous Activated Carbon from Hemp Bast Fibre Using Hydrothermal Processing

Facile Synthesis of Ultra‐Small Few‐Layer Nanostructured MoSe2 Embedded on N, P Co‐Doped Bio‐Carbon for High‐Performance Half/Full Sodium‐Ion and Potassium‐Ion Batteries

Contact Info

Product

Resources

About

Facile Synthesis of Ultra‐Small Few‐Layer Nanostructured MoSe₂ Embedded on N, P Co‐Doped Bio‐Carbon for High‐Performance Half/Full Sodium‐Ion and Potassium‐Ion Batteries