Liquid phase oxidation enables stable soft carbon anodes for potassium-ion batteries
Abstract Soft carbon has been recognized as a promising anode material for potassium-ion batteries (PIBs), due to low cost, high conductivity and low voltage platform. However, their practical application is hampered by slow storage kinetics and unsatisfactory cycle life. In this work, pitch-derived...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Springer
2024-03-01
|
| Series: | Carbon Research |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s44246-024-00106-3 |
| _version_ | 1797266560278069248 |
|---|---|
| author | Junjun Yao Chang Liu Yaming Zhu Ying Sun Daming Feng Yali Yao Quanxing Mao Tianyi Ma |
| author_facet | Junjun Yao Chang Liu Yaming Zhu Ying Sun Daming Feng Yali Yao Quanxing Mao Tianyi Ma |
| author_sort | Junjun Yao |
| collection | DOAJ |
| description | Abstract Soft carbon has been recognized as a promising anode material for potassium-ion batteries (PIBs), due to low cost, high conductivity and low voltage platform. However, their practical application is hampered by slow storage kinetics and unsatisfactory cycle life. In this work, pitch-derived needle coke, a typical soft carbon, was incorporated with oxygenated functional groups through liquid phase oxidation by using H2O2 oxidant. When used as anode materials for PIBs, the oxidized needle coke delivers a high reversible capacity of 322.7 mAh g−1, significantly superior to that of the needle coke (237.9 mAh g−1). The enhanced electrochemical performance can be attributed to the abundant oxygenated functional groups and resultant defects on the surface of oxidized needle coke, which not only serve as extra active sites for potassium storage, but also provide sufficient pathways for K+ migration across the adjacent carbon layers. Moreover, the expanded interlayer spacing derived from H2O2 oxidation facilitates rapid K+ intercalation and deintercalation. This work offers an effective modification strategy for the fabrication of high-performance pitch-based soft carbon anodes for PIBs. Graphical Abstract |
| first_indexed | 2024-04-25T01:02:38Z |
| format | Article |
| id | doaj.art-4fc7f092338b4802bb3c3cb3bc04a746 |
| institution | Directory Open Access Journal |
| issn | 2731-6696 |
| language | English |
| last_indexed | 2024-04-25T01:02:38Z |
| publishDate | 2024-03-01 |
| publisher | Springer |
| record_format | Article |
| series | Carbon Research |
| spelling | doaj.art-4fc7f092338b4802bb3c3cb3bc04a7462024-03-10T12:23:07ZengSpringerCarbon Research2731-66962024-03-013111110.1007/s44246-024-00106-3Liquid phase oxidation enables stable soft carbon anodes for potassium-ion batteriesJunjun Yao0Chang Liu1Yaming Zhu2Ying Sun3Daming Feng4Yali Yao5Quanxing Mao6Tianyi Ma7Institute of Clean Energy Chemistry, Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials of Liaoning Province, College of Chemistry, Liaoning UniversityInstitute of Clean Energy Chemistry, Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials of Liaoning Province, College of Chemistry, Liaoning UniversityInstitute of Chemical Engineering, University of Science and Technology LiaoningInstitute of Clean Energy Chemistry, Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials of Liaoning Province, College of Chemistry, Liaoning UniversityInstitute of Clean Energy Chemistry, Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials of Liaoning Province, College of Chemistry, Liaoning UniversityInstitute for the Development of Energy for African Sustainability (IDEAS), University of South AfricaInstitute of Clean Energy Chemistry, Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials of Liaoning Province, College of Chemistry, Liaoning UniversitySchool of Science, RMIT UniversityAbstract Soft carbon has been recognized as a promising anode material for potassium-ion batteries (PIBs), due to low cost, high conductivity and low voltage platform. However, their practical application is hampered by slow storage kinetics and unsatisfactory cycle life. In this work, pitch-derived needle coke, a typical soft carbon, was incorporated with oxygenated functional groups through liquid phase oxidation by using H2O2 oxidant. When used as anode materials for PIBs, the oxidized needle coke delivers a high reversible capacity of 322.7 mAh g−1, significantly superior to that of the needle coke (237.9 mAh g−1). The enhanced electrochemical performance can be attributed to the abundant oxygenated functional groups and resultant defects on the surface of oxidized needle coke, which not only serve as extra active sites for potassium storage, but also provide sufficient pathways for K+ migration across the adjacent carbon layers. Moreover, the expanded interlayer spacing derived from H2O2 oxidation facilitates rapid K+ intercalation and deintercalation. This work offers an effective modification strategy for the fabrication of high-performance pitch-based soft carbon anodes for PIBs. Graphical Abstracthttps://doi.org/10.1007/s44246-024-00106-3Needle cokeSoft carbonLiquid phase oxidationHydrogen peroxidePotassium-ion batteries |
| spellingShingle | Junjun Yao Chang Liu Yaming Zhu Ying Sun Daming Feng Yali Yao Quanxing Mao Tianyi Ma Liquid phase oxidation enables stable soft carbon anodes for potassium-ion batteries Carbon Research Needle coke Soft carbon Liquid phase oxidation Hydrogen peroxide Potassium-ion batteries |
| title | Liquid phase oxidation enables stable soft carbon anodes for potassium-ion batteries |
| title_full | Liquid phase oxidation enables stable soft carbon anodes for potassium-ion batteries |
| title_fullStr | Liquid phase oxidation enables stable soft carbon anodes for potassium-ion batteries |
| title_full_unstemmed | Liquid phase oxidation enables stable soft carbon anodes for potassium-ion batteries |
| title_short | Liquid phase oxidation enables stable soft carbon anodes for potassium-ion batteries |
| title_sort | liquid phase oxidation enables stable soft carbon anodes for potassium ion batteries |
| topic | Needle coke Soft carbon Liquid phase oxidation Hydrogen peroxide Potassium-ion batteries |
| url | https://doi.org/10.1007/s44246-024-00106-3 |
| work_keys_str_mv | AT junjunyao liquidphaseoxidationenablesstablesoftcarbonanodesforpotassiumionbatteries AT changliu liquidphaseoxidationenablesstablesoftcarbonanodesforpotassiumionbatteries AT yamingzhu liquidphaseoxidationenablesstablesoftcarbonanodesforpotassiumionbatteries AT yingsun liquidphaseoxidationenablesstablesoftcarbonanodesforpotassiumionbatteries AT damingfeng liquidphaseoxidationenablesstablesoftcarbonanodesforpotassiumionbatteries AT yaliyao liquidphaseoxidationenablesstablesoftcarbonanodesforpotassiumionbatteries AT quanxingmao liquidphaseoxidationenablesstablesoftcarbonanodesforpotassiumionbatteries AT tianyima liquidphaseoxidationenablesstablesoftcarbonanodesforpotassiumionbatteries |