Browsing by Author "Liang, Hao-Jie"
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- PublicationOpen AccessAn advanced cathode composite design for co-utilization of cations and anions in lithium batteries(2021)
;Wang, Xiao-Tong; ;Guo, Jin-Zhi ;Gu, Zhen-Yi; ;Sun, Zhong-Hui ;Li, Wen-Hao ;Liang, Hao-JieWu, Xing-LongAnions in the electrolyte are usually ignored in conventional "rocking-chair" batteries because only cationic de-/intercalation is considered. An ingenious scheme combining LiMn0.7Fe0.3PO4 (LMFP@C) and graphite as a hybrid cathode for lithium-ion batteries (LIBs) is elaborately designed in order to exploit the potential value of anions for battery performance. The hybrid cathode has a higher conductivity and energy density than any of the individual components, allowing for the co-utilization of cations and anions through the de-/intercalation of Li+ and PF6− over a wide voltage range. The optimal compound with a weight mix ratio of LMFP@C: graphite= 5: 1 can deliver the highest specific capacity of nearly 140 mA h/g at 0.1 C and the highest voltage plateau of around 4.95 V by adjusting the appropriate mixing ratio. In addition, cyclic voltammetry was used to investigate the electrode kinetics of Li+ and PF6- diffusion in the hybrid compound at various scan rates. In situ X-ray diffraction is also performed to further demonstrate the structural evolution of the hybrid cathode during the charge/discharge process.WOS© Citations 67Scopus© Citations 74 345 29 - PublicationMetadata onlyDefect engineering unveiled: Enhancing potassium storage in expanded graphite anode(Elsevier, 2024)
;Zhang, Kai-Yang ;Liu, Han-Hao ;Su, Meng-Yuan ;Yang, Jia-Lin ;Wang, Xiao-Tong; ;Gu, Zhen-Yi ;Zheng, Shuo-Hang ;Heng, Yong-Li ;Liang, Hao-Jie ;Wang, Yinglin ;Li, ShuyingWu, Xing-LongExpanded graphite (EG) stands out as a promising material for the negative electrode in potassium-ion batteries. However, its full potential is hindered by the limited diffusion pathway and storage sites for potassium ions, restricting the improvement of its electrochemical performance. To overcome this challenge, defect engineering emerges as a highly effective strategy to enhance the adsorption and reaction kinetics of potassium ions on electrode materials. This study delves into the specific effectiveness of defects in facilitating potassium storage, exploring the impact of defect-rich structures on dynamic processes. Employing ball milling, we introduce surface defects in EG, uncovering unique effects on its electrochemical behavior. These defects exhibit a remarkable ability to adsorb a significant quantity of potassium ions, facilitating the subsequent intercalation of potassium ions into the graphite structure. Consequently, this process leads to a higher potassium voltage. Furthermore, the generation of a diluted stage compound is more pronounced under high voltage conditions, promoting the progression of multiple stage reactions. Consequently, the EG sample post-ball milling demonstrates a notable capacity of 286.2 mAh g-1 at a current density of 25 mA g−1, showcasing an outstanding rate capability that surpasses that of pristine EG. This research not only highlights the efficacy of defect engineering in carbon materials but also provides unique insights into the specific manifestations of defects on dynamic processes, contributing to the advancement of potassium-ion battery technology.2 - PublicationMetadata onlyProspects and perspectives on advanced materials for sodium-ion batteries(Elsevier, 2023)
;Gu, Zhen-Yi ;Wang, Xiao-Tong ;Heng, Yong-Li ;Zhang, Kai-Yang ;Liang, Hao-Jie ;Yang, Jia-Lin; ;Wang, Peng-Fei ;You, Ya ;Du, FeiWu, Xing-LongWOS© Citations 5Scopus© Citations 12 6 - PublicationMetadata onlyWaste utilization of crab shell: 3D hierarchical porous carbon towards high-performance Na/Li storage(2021)
;Wang, Xiao-Tong ;Yu, Hai-Yue ;Liang, Hao-Jie ;Gu, Zhen-Yi ;Nie, Ping ;Wang, Hao-Yu ;Guo, Jin-Zhi; Wu, Xing-LongThe reuse of waste biomass has received more and more attention in recent years due to resource and environmental problems. The development of green, environmentally friendly and cost-effective electrode materials for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs) is currently the focus of research as key electrochemical energy storage systems. Herein, a facile strategy is adopted to prepare 3D hierarchical porous carbon anodes for LIBs/SIBs by taking advantage of waste crab shells and iron p-toluenesulfonate. The results show that the reversible specific capacity of the prepared anode could reach 703.2 mAh g−1 in LIBs and 283.2 mAh g−1 in SIBs when the current density is 0.05 A g−1. In addition, the contributions of pseudocapacitance, the kinetic characteristics and the storage mechanisms of lithium/sodium ions are investigated through cyclic voltammetry (CV) and galvanostatic intermittent titration techniques (GITTs). Due to the unique structure, the obtained material displays an excellent electrochemical performance, which lays the foundation for the improvement in the performance of waste biomass in LIBs/SIBs.WOS© Citations 6Scopus© Citations 6 18