Advanced Energy Materials
·
2024
·Vol. 14
·期 27
·2401221
·
IF 24.4
Chengyi Lu,Lei Liu,Song He,Boxin Li,Zhuzhu Du,Hongfang Du,Xuefei Wang,Shaowei Zhang,Wei Ai
The search for advanced electrode materials to solve slow ion diffusion and poor conductivity issues has spurred the development of fast-charging sodium-ion batteries (SIBs). Herein, a 2D metallic anode, KCu 4 S 3 , is reported expertly crafted using a KSCN molten salt approach, laying the foundation for fast-charging SIBs. It is found that the mixed metal-valence states within this compound provide substantial advantages, particularly in enhancing the high-rate capability and ensuring long-term durability. The mechanism that appears to facilitate these benefits can be traced to the formation of NaCu 2 S 2 intermediate, which assist in electron transfer during Na + (de)intercalation. In situ observations confirm the sodiation products of NaCu 2 S 2 and sodium polysulfide can recover to the original phase upon desodiation. Such distinctive characteristics endow KCu 4 S 3 with remarkable electrochemical performances, including an impressive capacity of 355 mAh g −1 at 20 A g −1 and 100% capacity retention within 3000 cycles. Moreover, the full cell exhibits a high energy density of 332 Wh kg −1 and retains 92% of its capacity across 150 cycles at 1 A g −1 . This work opens new horizons in the field of fast-charging materials, making a significant step forward in shaping the future of SIBs.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
·
2023
·
IF 5.3
Yuqing Gao,Xiaobo Chen,Xing Zhao,Lin Lan,Jun Zhang,Yao Cheng,Qiang Ru
A facile fabricating tactic of high-energy ball milling coupled with cold quenching is adopted to design an amorphous Se4P4/graphene (Se4P4/G) hybrid anode for potassium ion batteries (PIBs). Benefiting from the promoted electron transfer and effective volume constraint caused by the graphene matrix, the novel Se4P4/G anode realized a prominent K-storage and long-time durability, such as a high initial capacity of 931.23/870.3 mAh g–1 at 50 mAh g–1, and sustainable capacity of 296.67/293.33 mAh g–1 at 1 A g–1 for 1800 cycles. DFT theoretical calculation revealed that the Se4P4/G interface could facilitate the electron transfer and reduce the band gap, which boosted the potassium storage. The Se4P4/G with high efficient storage and long-term durability would be one of the attractive anode materials for PIBs, and ongoing efforts are currently directed to commercialize scientific research, which provides a new idea to yield the high-power potassium phosphide for PIBs in the future.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
Energy Storage Materials
·
2023
·
IF 20.4
Yu Wu,Wenjie Zhang,Yalun Li,Xuning Feng,Zhuang Ma,Dongsheng Ren,Languang Lu,Gui-Liang Xu,Khalil Amine,Minggao Ouyang
Ethylene carbonate (EC) plays a crucial role in current electrolytes for batteries . However, EC reacts exothermically with the electrode to trigger thermal runaway and undergoes continuous oxidative decomposition at high voltages, hindering it application for next-generation batteries . Here we report a simple and effective strategy to design sulfolane(SL)-based electrolyte with reshaped anions-dominated solvation structure, forming highly stable inorganic-dominated electrode-electrolyte interphases that efficiently stabilize nickel-rich cathode and graphite anode. Compared with the conventional electrolyte, practical pouch-type LiNi 0.8 Co 0.1 Mn 0.1 O 2 |Graphite cell with SL-based electrolyte significantly improve self-generated heat T 1 and thermal runaway triggering T 2 by 9.6 and 42.0 °C, respectively. More surprisingly, the pouch cell with SL-based electrolyte exhibits outstanding capacity retention of 88 % after 1000 cycles charged up to 4.5 V. The study brings new insights for unlocking advanced electrolyte candidates to build next-generation practical safer high-energy batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2018
·Vol. 28
·期 29
·1801989
·
IF 13.325
Lei Liu,Yu Chen,Yihao Xie,Peng Tao,Qinyi Li,Chenglin Yan
Carbon-based materials are considered to be one of the most promising materials for negative electrodes of the future, because of their good chemical stability, high electrical conductivity, and environmental benignity. However, to date, the underlying principles of K-ion storage in carbonaceous anodes remain elusive, which greatly hinders the development of such a category of anodes. Herein, the ultrastable K-ion storage of carbonaceous anode through systematic analyses, including comprehensive electrochemical characterizations, kinetics calculations, and structural/compositional evolution mechanism studies, is theoretically elucidated and experimentally verified. Specifically, it is found that the uniquely envelope-like nitrogen-doped carbon nanosheets with high pseudocapacitive could bring ultrastable storage of potassium ions, delivering a high initial reversible capacity of 367 mAh g −1 at a current density of 50 mA g −1 and retain 70.5 and 75.6% at current densities of 500 and 1000 mA g −1 after 1000th cycle, respectively. This study could enlighten researchers on further progress in the field of carbonaceous K-ion battery negative electrode with a long cycle life.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Zhongzheng Qin,Xin Zhou,Yongyuan Hu,Jian Pei,Gang Chen
V 2 O 3 is a promising candidate for sodium-ion batteries (SIBs) anode. Compared with common rhombohedral V 2 O 3 , cubic V 2 O 3 is a unique metastable phase with ordered oxygen vacancies and high energy state, but lacks study in the field of electrochemical energy storage. Herein, a metastable cubic V 2 O 3 embedded in N-doped carbon nanosheets (c-V 2 O 3 @NC) is synthesized by a simple molten salt method with urea assisted. Ab initio molecular dynamics calculations demonstrate that cubic V 2 O 3 possesses reduced Na + diffusion activation energy. Benefiting from the novel metastable structure and multiple modifications, the c-V 2 O 3 @NC shows enhanced ion diffusion kinetics, robust structure and improved conductivity. As a consequence, the c-V 2 O 3 @NC exhibits high specific capacity, ultralong cycle life and ultrahigh rate capability (274 mAh g −1 even after 3000 cycles at 5 A g −1 ) as anode material for SIBs. This work shows a feasible synthesis and synchronous modification for metastable materials to electrical energy storage applications.
研究领域:
材料科学
·
电化学能源存储
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Yangyang Wang,Xue Wang,Bingcheng Ge,Jianxin Guo,Carlos Fernandez,Qiuming Peng
The Li–CO2 battery is a potential energy storage device that not only possesses a theoretical energy density as high as 1876 W h kg–1 but also alleviates the consumption of fossil resources by converting the greenhouse gas CO2 into electric energy. However, some technique bottlenecks, such as high overpotential, low recyclability, and low energy density, severely prohibit its application rhythm. Here, we prepare a binder-free MXene–MnO2 composite film using vacuum-assisted filtration and in situ reduction, which can be used as a freestanding cathode for Li–CO2 batteries. This MXene–MnO2 film electrode bestows good cycle stability (∼220 cycles), high specific capacity, and lower overpotential (∼0.89 V) in Li–CO2 batteries. Both experimental tests and first-principles calculations reveal that the enhanced electrochemical properties are associated with three aspects. First, the MXene–MnO2 film offers a high electrical conductivity and porous structure, which provide fast transport channels for electrons and ions. Then, the replacement of Mn by Ti increases the adsorption of Li ions, which facilitates the rapid decomposition of Li2CO3. Finally, the synergistic effect of MXene and MnO2 exposes a large number of active sites, which increases the capacity of Li–CO2 batteries. Therefore, this self-supporting strategy on the MXene composite paves a way to develop high-performance Li–CO2 batteries.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-8
·
IF 15.7
Sun Wenlu,He Yulu,Fang Lei,Zeng Jinrong,Tang Enli,Hu Tingping,Zhang Hui,Lu Derong,Hu Chenji,Quan Zhilong,Kong Huabin,Chen Hongwei
Enhancing the durability of electrodes under high-power conditions is crucial for advancing high-power secondary batteries. Despite numerous optimization strategies proposed to mitigate electrode structural degradation, the performance of common electrodes inevitably deteriorates under high currents over extended cycling life. In this study, we report a capacity refreshing strategy for a porous organic framework electrode operating under high power conditions. By intermittently applying low currents, deactivated ions trapped within the framework can be effectively released, thus refreshing the electrode’s capacity. Importantly, this capacity refreshing can be periodically repeated. The framework electrode thus achieves an extended cycle life of over 60,000 cycles at 20 C (6 A/g) with a specific power of 28 kW/kg (based on active material). This strategy represents an alternative concept for designing organic electrodes that combine high power and long cycle life.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Gangyong Li,Siping Li,Zhi Li,Chen Li,Zhaodi Wang,Huan Li,Rui Chen,Miao Zhou,Bao Zhang,Zhaohui Hou
Rechargeable aluminum batteries (RABs) are promising alternatives to lithium-ion batteries in large-scale energy storage applications owing to the abundance of their raw materials and high safety. However, achieving high energy density and long cycling life simultaneously holds great challenges for RABs, especially for high capacity transition metal selenide (TMS)-based positive materials suffering from structural collapse and dissolution in acidic ionic liquid electrolyte. Herein, Se-doped carbon encapsulated Cu 2 Se with yolk-shell structure (YS/Se-C@Cu 2 Se) is rationally constructed to address such issues. Electrochemical and spectroscopic analyses as well as density functional theory calculations show that the highly conductive Se–C shell enhances the electrochemical reaction kinetics of the electrode and provides strong adsorption for the soluble Cu and Se species. Benefiting from these merits, the optimal YS/Se-C@Cu 2 Se cathode manifests a high specific capacity of 1024.2 mAh/g at 0.2 A/g, a superior rate capability of 240.5 mAh/g at 3.2 A/g, and a long-term cycling stability over 2500 cycles. This work offers a feasible approach to the design and construction of low-cost and efficient TMS-based positive materials for realizing practically usable RABs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2014
·
IF 4.086
Zhimin Ren,Zhiyu Wang,Chao Chen,Jia Wang,Xinxin Fu,Chenyao Fan,Guodong Qian
ABSTRACT In this paper we report a novel architecture of three-dimension (3D) carbon framework to encapsulate tetrahedron ZnO nanocrystals that serves as an anode material for lithium-ion batteries (LIBs). The ZnO@C composites are prepared via a simple internal-reflux method combined with subsequent calcination in argon. The amorphous carbon is formed on the surface of the ZnO crystals by in situ carbonization of the surfactant, which leads to a strong connection between the carbon framework and the active materials and guarantees faster charge transfer on the electrode. The ZnO crystal calcined at 500°C (ZnO@C-5) possesses regular tetrahedron shape with a side length of 150-200 nm and all of them are uniformly anchored among the network of amorphous carbon. The developed ZnO@C structures not only improve the electronic conductivity of the electrode, but they also offer a larger volume expansion of ZnO during cycling. As a result, the ZnO@C-5 demonstrates a higher reversible capacity, ultralong cycle life and better rate capability than that of the ZnO@C-7 and pure ZnO crystals. After 300 cycles, the ZnO@C-5 demonstrates a high capacity of 518 mAhg −1 at a current density of 110.7 mAg −1 . Moreover, this simple approach prepared the 3D composites architecture could shed light on the design and synthesis of other transition metal oxides for energy storage.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
2D Materials
·
2023
·Vol. 10
·期 2
·024006
·
IF 5.5
Haishan Xu,Han Zhang,Yifan Wang,Chen Tang,Tianyu Xiao,Zhi Xu,Hong Li,Fugui Xu,Yiyong Mai
Li-S batteries have received much attention due to their high energy density, low cost and environmental friendliness. However, the poor conductivity of sulfur and the 'shuttle effect' of polysulfides still impede their practical applications. In this study, thin layered MXene nanosheets sandwiched by conductive poly(m-phenylenediamine) with in-plane cylindrical mesochannels (mPmPD/MXene) are constructed as sulfur hosts for the cathode materials of Li–S batteries. The polar active sites on MXene and mesoporous conductive PmPD polymers synergistically alleviate the polysulfide shuttling through chemisorption and physical confinement; the high metallic conductivity of MXene and conductive PmPD ensure the transport of electrons and promote the redox kinetics; the in-plane cylindrical mesochannels on mPmPD/MXene provide hosting space for high sulfur loading (∼71 wt%) and facilitate smooth electrolyte transport in the internal space of the cathode. Profiting from these advantages, the Li–S battery based on the mPmPD/MXene cathode exhibits a capacity decay of 0.0593% after 800 cycles at 1 C (53% capacity retention). The optimized battery shows stable cycling performance even at high sulfur loading (6.8 mg cm−2) with 5.6 mAh cm−2 capacity remained after 60 cycles at 0.1 C. This study provides insights for the rational design of 2D heterostructures with in-plane mesochannels for high-performance Li-S batteries.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Ying Ji,Nian Wang,Yujiao Guo,Junming Guo,Mingwu Xiang,Xiaofang Liu,Wei Bai,Hongli Bai
Spinel LiMn 2 O 4 has been identified as a cathode material with extensive application potential for Li-ion batteries. However, during cycling, the Jahn−Teller effect and Mn dissolution have a substantial impact on its specific capacity and cycle span. Herein, combining Fe and Cr elements co-doping with single crystal truncated octahedron morphology is proposed to solve these problems. The Fe−Cr co-doping markedly restrains the Jahn−Teller effect, and promotes the development of crystal and selective growth of crystal surfaces in spinel LiMn 2 O 4 . The high exposure (111) surfaces of the truncated octahedron reduce the dissolution of Mn, and a tiny proportion of (110) and (100) surfaces increase the diffusion channels of Li + . HAADF-STEM characterization indicates that the Fe and Cr elements largely replace the Mn atoms at the octahedral 16d site. Because of these advantages, the optimal LiFe 0.05 Cr 0.08 Mn 1.95- x O 4 (LFCMO-8) delivers excellent electrochemical performance with 119.6 mAh·g −1 discharge capacity and 78.1% capacity retention after 500 cycles at 1 C. At comparatively higher current densities of 20 C and 30 C, the superior capacity retention ratios of 79.8% and 87.3% are still achieved after 2000 cycles. Even at 40 C, the LFCMO-8 sample can still reach 98.8% capacity retention rate after 2000 cycles. After 1000 cycles at 5 C, the LFCMO-8 sample still maintained a capacity retention of 45.4% at high temperature (55 °C). ICP-OES test combined with a V-shaped tube device indicates that the Mn dissolution of LCFMO-8 only accounted for 11.8% of LiFe 0.05 Mn 1.95 O 4 (LFMO). This study serves as a meaningful reference for the preparation of high-performance LiMn 2 O 4 cathode materials.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Kang Xia,Zhengyin Yao,Pengfei Zhao,Zhen Liu,Shuo Zhao,Zheng Peng,Peng Zhang
The challenge of high-rate charging remains a critical barrier for the widespread adoption of lithium-ion batteries (LIBs). In this study, we address this issue by employing a novel binder, poly(methyl methacrylate)-grafted-natural rubber (PMMA- g -NR), for lithium iron phosphate (LFP) cathodes. This amphiphilic binder not only improves ionic and electronic conductivities but also prevents macro-phase segregation of LFP and conductive carbon, ensuring uniform distribution. The unique microphase morphology, governed by the “like dissolves like” principle, enriches conductive carbon in NR domains and LFP particles in PMMA domains, enhancing the synergy between the ionic and electronic transport pathways. The resulting LFP||Li cells exhibit exceptional rate performance, maintaining 64% capacity retention after 1200 cycles at 10C. Furthermore, the binder’s excellent elasticity preserves electrode integrity during repeated cycling. This work highlights the critical role of binder design in advancing high-rate charging capabilities, offering a scalable solution to improve the fast-charging performance and longevity of LIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）