Nanomaterials
·
2022
·Vol. 12
·期 22
·4041
·
IF 5.719
Tao Zhang,Yan Liu,Guihuan Chen,Hengjun Liu,Yuanyuan Han,Shuhao Zhai,Leqing Zhang,Yuanyuan Pan,Qinghao Li,Qiang Li
Transition metal fluoride (TMF) conversion cathodes, with high energy density, are recognized as promising candidates for next-generation high-energy Li/Na-ion batteries (LIBs/SIBs). Unfortunately, the poor electronic conductivity and detrimental active material dissolution of TMFs seriously limit the performance of TMF-LIBs/SIBs. A variety of FeF3-based composites are designed to improve their electrochemical characteristics. However, the storage mechanism of the conversion-type cathode for Li+and Na+co-storage is still unclear. Here, the storage mechanism of honeycomb iron (III) fluoride and carbon (FeF3@C) as a general cathode for LIBs/SIBs is analyzed by kinetics. In addition, the FeF3@C cathode shows high electrochemical performance in a full-cell system. The results show that the honeycomb FeF3@C shows excellent long-term cycle stability in LIBs (208.3 mA h g−1at 1.0 C after 100 cycles with a capacity retention of 98.1%). As a cathode of SIBs, the rate performance is unexpectedly stable. The kinetic analysis reveals that the FeF3@C cathode exhibit distinct ion-dependent charge storage mechanisms and exceptional long-durability cyclic performance in the storage of Li+/Na+, benefiting from the synergistic contribution of pseudocapacitive and reversible redox behavior. The work deepens the understanding of the conversion-type cathode in Li+/Na+storage.Keywords:full-cell;kinetic analysis;metal fluorides;storage mechanism
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
Nanoscale
·
2022
·Vol. 14
·期 24
·8640-8648
·
IF 8.307
Tao Chen,Changyu Yang,Xuewen Hu,Qicheng Zhang,An Cai,Huibin Liu,Yang Li,Wenchao Peng,Fengbao Zhang,Xiaobin Fan
Aqueous rechargeable zinc-ion batteries (ZIBs) are emerging in grid energy storage due to zinc abundance and intrinsic safety. However, developing suitable cathode materials with satisfactory stability and rate capacity remains a great challenge. Herein, a structure of layered MXene derived nanoporous VOx wrapped with graphene nanosheets (rGO–VOx) is constructed as a cathode for ZIBs. The incorporation of two typical 2D materials imparts composites with shortened diffusion pathways and increased electrical conductivity. Thus, the rGO–VOx cathode exhibits a remarkable rate capability of 196 mA h g−1 at 8 A g−1 and long-term stability with 90% retention after over 1200 cycles at 5 A g−1 in an aqueous coin cell. The Zn storage mechanism is also systematically investigated. The layered V2O5 transforms into layered ZnxV2O5·nH2O with larger interspacing upon cycling. NaV6O15 and the in situ formed ZnxV2O5·nH2O co-contribute to the subsequent insertion and extraction process.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Rong Han,Yusong Pan,Chao Du,Yanlei Xiang,Yuanqing Wang,Hongwu Zhu,Chengjie Yin
Aqueous zinc ion batteries (AZIB) have become a research hotspot for energy storage systems (ESS) in recent years due to some advantages such as their low risk and low cost. However, the structural collapse during charging and discharging affects the reversibility of the battery , which is a very serious blow to manganese-based materials and will affect their subsequent development in batteries. Therefore, β-MnO 2 cathode materials doped by the rare earth element europium (Eu) were prepared by a simple hydrothermal method . Compared with β-MnO 2 , Eu-doped MnO 2 possessed a high specific capacity of 409 mA h g −1 at 0.2 A g −1 . The initial specific capacity of Eu-doped MnO 2 at 1 A g −1 was 200.23 mA h g −1 and the maximum discharge specific capacity of 254 mA h g −1 was reached at 128 cycles. The energy storage mechanism of the electrodes was investigated by ex-situ XRD and ex-situ XPS tests. It was found that Eu element doping to β-MnO 2 not only maintains the stability of the crystal structure during redox reaction, but also promotes the embedding reaction of H + /Zn 2+ . The combination of rare earth elements Eu and MnO 2 is a new direction in the development path of aqueous zinc ion batteries.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2022
·
IF 18.027
Daping Qiu,Biao Zhang,Teng Zhang,Tong Shen,Zijing Zhao,Yanglong Hou
The sulfur doping strategy has been attracting extensive interest in potassium-ion battery carbon anodes for the dual potential of improving the capacity and kinetics of carbon anodes. Understanding the doping and potassium storage mechanism of sulfur is crucial to guide the structural design and optimization of high-performance sulfur-doped carbon anodes. Herein, presenting a laboratory-synthesized sulfur-doped hard carbon (SHC) with a sulfur content of 6.4 at. % as an example, we clarify the sulfur doping mechanism and reveal the role of sulfur in potassium storage. The high sulfur content of SHC stems from the selective substitution of sulfur for carbon and the residual trace of sulfur molecular fragments after sulfurization. As a result, thanks to the multifaceted roles of doped sulfur in potassium storage, about twice as much capacity, rate capability, and cycling stability is achieved for SHC against S-free hard carbon at the same test conditions. Furthermore, potassium-ion hybrid capacitors assembled based on an SHC anode demonstrate high energy/power density (139 Wh kg–1/7.3 kW kg–1), along with an extraordinary cycling stability.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Guanhua Zhang,Xiaojing Li,Donghai Wei,Huihuang Yu,Jinghua Ye,Song Chen,Wen Zhang,Jian Zhu,Xidong Duan
As a representative two-dimensional layered material, In 2 Se 3 attracts an increasing research interest because of the virtue of high theoretical lithium-ion storage capacity. However, the development of In 2 Se 3- based anode is primarily confined by the poor electronic conductivity and inevitable volume variations. Moreover, the lithium − ion storage mechanism of In 2 Se 3 - based electrode is still not clear. Here, we report a facile construction strategy for metal-organic frameworks (MOFs)-derived In 2 Se 3 nanocrystals encapsulated in porous nitrogen − doped carbon conductive matrix (In 2 Se 3 /PNC). The In 2 Se 3 /PNC with porous structure and rich N − doped carbon affords highly efficient channels for rapid transportation of ions and electrons. Meanwhile, as the heterogeneous structure provides sufficient void space to relieve the internal mechanical stress during the repeated charge–discharge processes. Thus, the optimized In 2 Se 3 /PNC − 800 (annealed at 800 °C) electrode exhibits a capacity as high as 1038 mAh/g at 200 mA g −1 , remarkable cycling stability over 2000 cycles and a comparable high-rate capability. Moreover, the reaction mechanism of the In 2 Se 3 with Li + is revealed through in-situ XRD and density functional theory (DFT) simulations. This study may present broad opportunities for reliable construction of high-capacity selenium-based composites for energy storage.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Xianlu Lu,Dongdong Zhang,Jiang Zhong,Lin Wang,Lan Jiang,Qiao Liu,Gang Shao,Dingfa Fu,Jie Teng,Weiyou Yang
Among the families of modern energy storage devices, the potassium-ion batteries (PIBs) are emerging as a shining star with desired high energy density and interesting commercial application prospect. However, they still encounter the big question with intrinsically bad cycle stability, especially under high-temperature working conditions. In this work, we report the progress on exploring high-temperature PIBs with ultrahigh stability, based on metal organic framework-5 (MOF-5) as anode materials. At the fixed working temperature of 62.5 °C, the as-constructed PIBs have initial discharge and charge specific capacities of respective ∼ 1183 and 210 mA h g −1 at a current density of 200 mA g −1 , and hold a specific capacity of 160 mA h g −1 with a low decay of 0.15% per cycle over 150 cycles. Even at a high current density of 500 mA g −1 , they deliver a reversible specific capacity of 56 mA h g −1 with a tiny decay of 0.018% per cycle over 3000 cycles, which is the state-of-the-art one among those of high-temperature PIBs ever reported. The energy storage mechanism based on C O bond as the redox center is proposed.
研究领域:
材料科学
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能源存储技术
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Peiyan Liu,Meiri Wang,Jing Li,Hongtao Cui,Tao Zeng,Shubin Yang,Huan Wang,Yuanyuan Liu
Rechargeable aqueous Zn//MnO 2 batteries are the promising alternatives to lithium-ion batteries owing to their high safety, high energy density, low cost, and environmental friendliness. However, the unstable MnO 2 cathode causes poor practical energy density and serious capacity fading. To overcome this issue, herein, a unique 2D nanosheets self-supported 3D δ -MnO 2 microflower hierarchical architecture is rationally designed and synthesized by taking advantage of its microwave-absorbing characteristics. The 2D nanosheets with high surface area could expose numerous active sites for ions/electrons transfer. Also, the 3D assembled structure acting as building blocks would ensure structural stability for long-life cycles. Benefiting from these synergistic merits, the δ -MnO 2 microflowers deliver a high capacity of 287.6 mA h g −1 at 0.5 C, an excellent rate capability of 202.7 mA h g −1 at 5 C, and a superior cycling retention of 76.5% over 1000 cycles at 10 C. Furthermore, a storage mechanism of H + /Zn 2+ co-insertion accompanied by the deposition of zinc sulfate hydroxide hydrate is clarified by the aid of ex-situ XRD and SEM technologies. This work provides a new pathway for developing high capacity and long lifespan ZIBs.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Yilong Xu,Fei Shao,Yongfeng Huang,Xudong Huang,Fuyi Jiang,Feiyu Kang,Wenbao Liu
Vanadium-based oxides hold immense promise as cathode materials for aqueous zinc-ion batteries (AZIBs); however, their practical implementation faces a significant hurdle: a prolonged activation period is typically required to achieve peak performance. This activation process, which often requires hundreds of cycles, arises from the complex behavior of mixed-valence vanadium systems. In this paper, we propose a solution based on an elegant and simple electrical activation strategy. By applying a carefully designed precycling charging protocol to NH 4 + -intercalated vanadium oxide (VON), we achieved activation speeds, reaching peak capacity within just several to 25 cycles—even under high current densities. The electrochemically activated material (E-VON) demonstrates performance metrics: delivering a high specific capacity of 359.1 mAh g −1 at 0.1 A g −1 , maintaining a rate capability of 155.5 mAh g −1 at 10 A g −1 , and showing cycling stability. The electrical activation process enhances ion transport within the VON structure and triggers a Zn 2+ /H + coinsertion mechanism during cycling. This mechanism is intricately linked to the reversible formation and dissolution of a basic zinc sulfonate by-product, offering new insights into charge storage processes within vanadium-based AZIB cathodes. Our comprehensive characterization revealed how this activation strategy fundamentally transforms the structure and electrochemical behavior of materials, providing a practical pathway to overcome the longstanding limitations of traditional vanadium oxide cathodes. This study focuses on rapidly activating cathode materials, advancing the development of high-performance AZIBs.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Feiyue Zhai,Xiayu Zhu,Wenfeng Zhang,Gaoping Cao,Huimin Zhang,Yalan Xing,Yu Xiang,Shichao Zhang
Recently, spinel high-entropy oxide (HEO) anode materials have garnered extensive attention for high-energy lithium-ion batteries due to their high specific capacity. Many studies have explored its energy storage mechanism, but few have paid attention to its characteristics in long cycle life. In this work, the whole life cycling performance of (FeCoNiCrMn)-HEO is presented and investigated for the first time. Distinct capacity trends are studied to divide the cycling life into three stages: activation, upgradation, and degradation. Ex situ morphological characterizations are conducted to reveal that the driving force of stage change is continuous particle fragmentation. As a result, refined particles promote conversion reaction reversibility and induce extra interfacial capacity, achieving 2831 mAh g −1 at 825 cycles. Density functional theory (DFT) calculations provide a deeper insight into the high entropy effect on the ultra-high extra interfacial capacity. However, continuous refinement brings about huge electrolyte interface-derived layers, which are also responsible for pre-decay and post-collapse. The view of the evolution of the lithium storage mechanism is explicitly presented and experimentally verified by high-energy ball milling and fluorinated vinyl carbonate (FEC). These above results can give practical solutions to design high specific capacity and long-life cycle stability HEO anode in the future.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 37
·21209-21218
·
IF 12.732
Xiaojing Liu,Xinyue Hu,Shuang Hou,Wei He,Zhifu Liang,Lingyu Meng,Qing Guo,Tiezhong Liu,Qiang Ru,Lingzhi Zhao
Owing to the merits of high cost-effectiveness and satisfying eco-efficiency, rechargeable zinc ion batteries (ZIBs) are feasible electrical energy storage systems for improving grid reliability. However, viable cathode materials usually suffer from sluggish kinetics and limited stability. Herein, this article reports a facile recrystallization/reduction strategy to make anion-deficient Na2V6O16 nanobelt (denoted as ANVO), in which the coexistence of nanostructure and oxygen vacancy facilitates Zn2+ reaction kinetics for a superior high specific capacity of 458 mA h g−1 at 500 mA g−1. DFT calculation demonstrates that the oxygen vacancy can strengthen V–O bonds and narrow the band gap to improve the electrical conductivity. The in-depth analysis of the storage mechanism is also revealed by in situ XRD. The ultra-thin Na2V6O16 nanobelts (∼10 nm thickness) harvest prominent long-term reliability and gain favorable zinc storage ability even at a large current density of 10 000 mA g−1 after 5000 cycles, suggesting its great potential for ZIBs. This work not only provides fresh insight into the design of deficiency-modified sodium vanadate cathodes but also broadens the scope for understanding its electrochemical properties and energy-storage mechanism in rechargeable zinc-ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Rui Sun,Xincheng Guo,Siyang Dong,Caihong Wang,Lingxing Zeng,Shengjun Lu,Yufei Zhang,Haosen Fan
In the last decades, aqueous zinc-ions batteries (AZIBs) have attained enormous attention owing to their environmental friendliness , the abundant resources of Zn and the safety of aqueous electrolytes . However, the sluggish zinc-ions diffusion rate results in poor electrochemical properties . Therefore, seeking an appropriate cathode material is a brilliant method to deal with this problem. In this work, the heterostructure of Zn 3 V 3 O 8 and ZnO encapsulating into 3D interpenetrating carbon network (Zn 3 V 3 O 8 @ZnO@NC) is prepared to serve as cathode material for AZIBs. Benefiting from the structural stability of the cross-stacked structure and outstanding electrochemical conductivity of the 3D interpenetrating carbon network, the electrode material delivers remarkable cyclic stability (120.5 mA h g −1 at 5 A g −1 after 2000 cycles). The discharge capacity only reduces 33.3 mAh g −1 with the current density increase from 0.5 A g −1 to 3 A g −1 (216.3 mA h g −1 and 183 mA h g −1 at 0.5 A g −1 and 3 A g −1 , respectively), revealing a super-stable rate performance. Besides, the zinc ion storage mechanism of Zn 3 V 3 O 8 @ZnO@NC was revealed via ex-situ XRD and XPS characterizations. The results reveal that Zn 3 V 3 O 8 @ZnO@NC was transformed into Zn 3 (OH) 2 V 2 O 7 ·2H 2 O (ZOVO) during the first charge process between 1.2 and 1.4 V and the transformation is completed after the two cycles. After the second cycle, the Zn 2+ storage is provided only by the de(intercalation) of Zn 2+ in ZOVO.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Minhui Zheng,Yang Liu,Qiang Ru,Jun Zhang,Zikang Pan,Yuqing Gao,Francis Chi-Chung Ling,Li Wei
The mesh-like hard carbon loaded SbPO 4 (SbPO 4 /NTC) was harvested and employed as anode material for sodium ion batteries. Profiting from prominent capacitance, porous structure, and sufficient buffering space, the composite realizes high electrochemical kinetics for sodium ion storage. The SbPO 4 /NTC composite gains impressive battery properties, such as high discharge capacity of 413.7 mAh g −1 under 0.5 A g −1 after 200 cycles and conspicuous rate performance of 365.7 mAh g −1 even at 6 A g −1 . In addition, the composite demonstrates a wide operation-temperature window with favorable capacities of 194.3–397.6 mAh g −1 from −10 °C to 60 °C at 0.1 A g −1 . The phase transition and sodium storage mechanism are elucidated by density functional theory (DFT) calculation. Therefore, the SbPO 4 /NTC composite has a great potential for high-efficient sodium ion storage.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）