ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Liu-Yang Sun,Lie Yang,Jing Li,R. Lakshmi Narayan,Xiao-Hui Ning
Iron oxide , a promising anode material for lithium ion batteries, has a high theoretical specific capacity but exhibits poor cycling performance and rate capability. To resolve these issues, 150 nm sized carbon coated, hollow Fe 3 O 4 nanoellipsoids are designed in this study. Owing to the relatively high utilization ratio of Fe 3 O 4 and the buffer provided by the carbon layer, this composite has enhanced lithium ion storage properties and long cycle life. From half-cell measurements, the capacity is found to be in excess of 400 mAh g −1 even after 1000 cycles at 5 A g −1 . And then, a facile and practical strategy is used to gain a relatively high compressed density (∼1.87 g cm −3 ), so the volumetric capacity of the Fe 3 O 4 @C electrode can be further enhanced by subjecting it to compression. In the full cell test, the Fe 3 O 4 @C electrode has a specific capacity of 400 mAh g −1 and volumetric capacity of 749 mAh cm −3 after 100 cycles. The improvement in cycling stability can be attributed to minimal volume expansion and the stability of the solid-electrolyte interphase (SEI) layer, over the nanoparticles . Finally, the evolution of solid-electrolyte interphase layer is indirectly monitored and the progressive loss of active lithium is quantitatively measured.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Chen Zhao,Cheng Zheng,Qian Yao,Chenghui Zhang,Jian Yang
High-quality solid electrolyte interphases (SEI) are important to advanced sodium-ion batteries, particularly on anode materials. Their large structure strain/stress usually aggravates the rupture and dissolution of the SEI, then degrades the electrochemical performance. Here, sodium vinylsulfonate (SVS) is reported as a model to achieve the polymer incorporation into the SEI by in situ electrochemical polymerization. The sulfonate group in SVS activates the vinyl group and interacts with the other components, enabling the polymer to be a robust and flexible backbone of the SEI. This enhances the mechanical properties and reduces the SEI dissolution, improving the electrochemical performance of anode materials. Using commercial tin microparticles (µ-Sn) as an example, they exhibit a capacity of 516.3 mAh g −1 after 2000 cycles at 4 A g −1 , a record-high performance at high rates. This strategy is also successful in the cases of µ-Bi and µ-Sb. These results are obtained based on commercial microparticles without carbon coating. So, it is believed that it is a new and simple way to improve the electrochemical performance of Na-ion batteries.
研究领域:
电化学
·
能量存储与转换
·
材料科学
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2024
·
IF 5.4
Peng Zhang,Jian-Hua Cao,Wei-Hua Liang,Yue Li,Ya-Kun Wang,Da-Yong Wu
Solid electrolytes are generated through in situ polymerization within batteries, which is one of the most promising methods for achieving solid-state lithium metal batteries with good interfacial contact, high safety, and high performance. Poly-1,3-dioxolane (PDOL), although a good in situ solidified electrolyte for lithium stability, has poor applicability in high-voltage battery systems. In order to improve the interfacial compatibility between PDOL and both the cathode and anode of high-voltage batteries. we herein design a sacrificial additive, diethyl (2,2,2-trifluoroethyl) phosphite (DETFPi), with a lower lowest unoccupied molecular orbital (LUMO) and higher highest occupied molecular orbital (HOMO) energy, through methods of calculation. After being loaded into the battery, DETFPi-DOL is in situ polymerized to form DETFPi-PDOL electrolyte. The Li||DETFPi-PDOL||Li symmetric battery operates stably for 2000 h at 0.5 mA cm–2, with an overpotential of only 16 mV. XPS analysis shows that an SEI layer with high LiF content is formed on the surface of the lithium anode after cycling, which promotes the uniform deposition of lithium ions and inhibits the growth of lithium dendrites. After 300 cycles, the NCM811||DETFPi-PDOL||Li battery exhibits a remaining capacity of 154.8 mAh g–1 (81%) within the 3.0–4.35 V range, meanwhile demonstrating excellent rate performance. Moreover, a uniform CEI layer containing pentavalent phosphorus and low LiF content is formed on the surface of the cathode after battery cycling. Finally, due to the improvement of the cathode interface, the increase of interfacial impedance of the battery after 300 cycles is reduced to half that of the PDOL battery.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Hong Tan,Pan Wang,Guocai Yuan,Huan Yang,Jiang Ye,Kai Lu,Gang Chen,Biyou Peng,Qinyong Zhang
The advancement of aqueous zinc-ion batteries (AZIBs) is impeded by challenges encompassing cathodic and anodic aspects, such as limited capacity and dendrite formation, constraining their broader utilization. Herein, pyrrole, an economically viable and readily accessible compound, is proposed as a versatile electrolyte additive to address these challenges. Experiments and DFT calculations reveal that pyrrole and its derivatives preferentially adsorb onto zinc foil, facilitating the formation of a pyrrole-based solid electrolyte interphase (SEI), which effectively guides uniform Zn 2+ deposition through strong attraction force and suppresses hydrogen evolution reactions and parasitic reactions. On the cathode side, the additive promotes the formation of a durable cathode electrolyte interphase (CEI) enriched with poly-pyrrole (Ppy) analogues. Such layer significantly contributes to extra capacity of both polyaniline (PANI) and MnO 2 cathodes by leveraging the electrochemical reactivity of Ppy towards Zn 2+ and improves their cyclic stability. Consequently, a dendrite-free Zn anode is realized with an extended cyclic lifespan surpassing 6000 h in Zn//Zn cell, coupled with an average Coulombic efficiency of 99.7 % in Cu//Zn cell. Moreover, the PANI//Zn and MnO 2 //Zn full cells demonstrate enhanced capacities along with improved cycling stability. This work provides a new additive strategy towards concurrent stabilization of cathode and Zn anode in AZIBs.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Yaxin Wang,Xuelong Liao,Wei Wang,Shan Chen,Jialei Chen,Huan Wang
The loose and randomly oriented byproduct (i.e., Zn4(OH)6SO4·xH2O, ZHS) in situ formed on the zinc (Zn) surface is recognized to be the primary cause for dendritic Zn growth and side reactions. Switching the detrimental passivation film into a dense and kinetically favorable solid electrolyte interphase (SEI) is a straightforward strategy to tackle these issues faced by Zn metal anodes but remains largely unexplored. Herein, a new polymer film directly grown on Zn metal through room-temperature plasma-enhanced chemical vapor deposition is proposed to induce the lateral growth of ZHS nanosheets and decrease the Zn2+ desolvation barrier, thereby forming a beneficial composite SEI for suppressing Zn dendrite growth and surface corrosion. As a result of the joint effect, we realize an impressively stable cycling behavior in symmetric cell over 3400 h at 2 mA cm–2. Moreover, full cells also demonstrate prolonged lifespans. This work opens a new avenue for stabilizing Zn metal batteries by turning detrimental ZHS into a favorable interlayer.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
Science Advances
·
2025
·Vol. 11
·期 27
·
IF 12.5
Chutao Wang,Kun Wang,Hongbin Ni,Congcong Du,Xiaoting Yin,Jingmin Fan,Ruming Yuan,Yuxin Tang,Jiawei Yan,Mingsen Zheng,Quanfeng Dong
Direct metal anodes are plating/stripping processes without a supporting framework and bulk ion conductivity; they are the electrodes susceptible to collapse and limiting the electrochemical reaction to the two-dimensional surface. The focus of this era is mostly on building a solid electrolyte interface (SEI). However, simply building protective layers cannot address essential issues; a thorough transformation of the metal electrode bulk is critical. We propose a reconstructed sodium metal anode (RSMA) by implanting an activatable ion-conductive network to the bulk. NaPF 6 will be activated with an electrolyte to conduct ions and form an anion-derived SEI. Conductive polymers become the supporting skeleton; thus, the RSMA has a metal-bulk storage matrix and an expanded three-dimensional plating/stripping mechanism and permits the homogeneous deposition/dissolution of Na + in high dimensions. Last, RSMA symmetric cells were stably cycled for 2700 hours and achieved a 100% depth of discharge. RSMA||PB cells can achieve 10-coulomb cycling and a proof-of-concept pouch cell energy density of 367 watt-hours per kilogram.
研究领域:
电化学
·
储能技术
·
材料科学
·
电池技术
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Kangshuai Zhu,Jing Yang,Yuxuan Li,Tongle Xu,Qinmin Pan
Solid polymer electrolytes (SPEs) have attracted significant attention in next-generation solid-state batteries (SSBs). However, SPEs-based SSBs suffer from performance fading and safety concerns at high temperatures caused by the thermal instability and degradation of their electrode/electrolyte interfaces. Herein, a poly(vinylene carbonate-co-methyl acrylate)-based solid polymer electrolyte (PVC-MA-SPE) with a highly self-adaptive structure is designed. The resulting PVC-MA-SPE exhibits an ionic conductivity of 4.93 × 10 −4 S cm −1 at 120 °C and high adhesion to electrodes. At zero pressure, solid-state Li|PVC-MA-SPE|LFP batteries maintain 152.6 mAh g −1 discharge capacity and 95.4% capacity retention after 150 cycles at 1C and 120 °C. The mechanism for the improved performance is attributed to the strong intermolecular interaction of the poly(vinylene carbonate-co-methyl acrylate) (PVC-MA) network with volatile molecules. Importantly, the PVC-MA network not only enables the SPE to tightly contact with electrodes, but also contributes to forming thermally stable SEI/CEI enriched in flexible polymeric components and LiF. These properties result in enhanced interfacial stability at high temperature. This work presents a novel approach to enhance the intrinsic safety of solid-state batteries at high temperatures.
研究领域:
材料科学
·
储能
·
电化学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
Joule
·
2024
·
IF 38.6
Qiaonan Zhu,Dandan Yu,Jiangchun Chen,Liwei Cheng,Mengyao Tang,Yingyu Wang,Yuting Li,Jie Yang,Hua Wang
High-energy cryogenic batteries have been pursued throughout the past decades. Anode-free batteries offer a promising avenue to boost energy density because they comprise weightless anodes. However, their low-temperature operation is challenged by poor metal plating/stripping reversibility and unstable solid electrolyte interphase (SEI). Herein, the first low-temperature anode-free sodium battery is fabricated by simultaneous surface modification of the current collector and electrolyte design. The plasma-treated current collector (p-Al@C) possesses a sodiophilic N-doped carbon surface, enabling uniform sodium nucleation and growth; meanwhile, the optimized weak-solvation electrolyte facilitates Na + desolvation and the formation of a B/F inorganic-contained SEI. Na||p-Al@C half cells exhibit an ultrahigh average Coulombic efficiency of 99.88%, and p-Al@C||Na 3 V 2 (PO 4 ) 3 batteries achieve an energy density of 250 Wh kg −1 cathode + anode at −40°C. More interestingly, Ah-level anode-free pouch cells deliver a remarkable energy density of 110 Wh kg −1 entire cell at −40°C. This work represents a critical step for low-temperature sodium batteries.
研究领域:
储能
·
电化学
·
电池技术
·
材料科学
·
低温电池
✓ 已验证
DOI
高影响因子
ACS Nano
·
2023
·
IF 17.1
Weibo Huang,Yan Wang,Linze Lv,Xiang Li,Yueyue Wang,Wei Zheng,Honghe Zheng
The silicon (Si) anode is widely recognized as the most prospective next-generation anode. To promote the application of Si electrodes, it is imperative to address persistent interface side reactions caused by the huge volume expansion of Si particles. Herein, we introduce beneficial groups of the optimized binder and electrolyte on the Si surface by a co-dissolution method, realizing a “trinity” functional layer composed of azodicarbonamide and 4-nitrobenzenesulfonyl fluoride (AN). The “trinity” functional AN interfacial layer induces beneficial reductive decomposition reactions of the electrolyte and forms a hybrid solid–electrolyte interphase (SEI) skin layer with uniformly distributed organic/inorganic components, which can enhance the mechanical strength of the overall electrode, restrain harmful electrolyte depletion reactions, and maintain efficient ion/electron transport. Hence, the optimized Si@AN11 electrode retains 1407.9 mAh g–1 after 500 cycles and still delivers 1773.5 mAh g–1 at 10 C. In stark contrast, Si anodes have almost no reserved capacity at the same test conditions. Besides, the LiNi0.5Co0.2Mn0.3O2//Si@AN11 full-cell maintains 141.2 mAh g–1 after 350 cycles. This work demonstrates the potential of developing multiple composite artificial layers to modulate the SEI properties of various next-generation electrodes.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Chencheng Xu,Jiangmin Jiang,Shuang Li,Zhan Wang,Gaoyu Zhou,Yaxin Chen,Xiangkai Kong,Quanchao Zhuang,Zhicheng Ju
Graphite (Gr) is a low-cost, highly stable anode material for lithium-ion batteries (LIBs). However, the Gr anode has the disadvantage of low initial coulombic efficiency (ICE) due to the loss of active lithium caused by the formation of solid electrolyte interface (SEI). Chemical pre-lithiation is an effective method to compensate for the loss of active lithium, but the redox potential of traditional chemical pre-lithiation reagents is higher than the Li + insertion potential of Gr (≈0.2 V vs Li/Li + ), which leads to the inability of lithiation reaction. In this work, a methoxybiphenyl lithium chemical pre-lithiation system is designed by molecular tailoring engineering, density functional theory (DFT) and experimental investigations demonstrate the system's reduced redox potential (0.075–0.142 V vs Li/Li + ) and a suitable Li + binding energy. The results demonstrate that the ICE of Gr anode chemically pre-lithiated for 4 min is 103.32 % and the process is stable and efficient by using the molecularly tailored chemical pre-lithiation reagent. In practical applications, the lithium-ion full-battery assembled with LiFePO 4 (pGr||LFP) exhibits high ICE (93.05 %) and energy density (321.7 Wh kg −1 ). The novel methoxybiphenyl lithium chemical pre-lithiation system prepared by molecular tailoring engineering provides a promising approach for chemical pre-lithiation engineering.
研究领域:
材料科学
·
电化学
·
储能技术
·
化学工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2025
·
IF 6.4
Yuhui Weng,Xingyu Sun,Siying Li,Zhuoying Wu,Ziwei Chen,Yongqun Ma,Zefan Zheng,Feng Lin,Ming Zhang,Kejun Zhang,Min Ling,Keli Yang,Chengdu Liang,Jun Chen
High-capacity silicon (Si)-based anodes have been recognized as particularly promising candidates for high-energy-density lithium-ion batteries (LIBs). Rational design and tailoring of an artificial interface for Si anodes can effectively mitigate volume expansion, suppress detrimental side reactions, and enhance lithium-ion (Li+) diffusion kinetics—three critical factors widely acknowledged as fundamental prerequisites for enabling long-term cycling stability and fast-charging capabilities. Therefore, we introduced an organic/inorganic composite interface design strategy combining high elasticity and ion-conductive properties. Lithium metasilicate (LMS) not only functions as an effective protective layer and Li+ conductor but also inhibits lithium hexafluorophosphate (LiPF6) hydrolysis to suppress the generation of corrosive hydrofluoric acid (HF). When integrated with carboxyl-rich polyacrylic acid (PAA), the nanocomposite coating layer demonstrates high elasticity to accommodate volume expansion, establishes continuous Li+ diffusion pathways, and promotes the formation of a robust lithium fluoride (LiF)-rich artificial solid-electrolyte interphase (SEI). Consequently, the as-developed Si@PL-10 electrode demonstrates significantly enhanced cycling performance (2297 mAh g−1 after 200 cycles at 1 A g−1) and high-rate capability (1854 mAh g−1 at 6 A g−1). This work provides valuable insights for designing scalable multifunctional coatings for high-performance Si anodes.
研究领域:
储能技术
·
材料科学
·
电化学
·
纳米技术
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Jianwei Zhang,Yunyun Zhong,Shuanjin Wang,Dongmei Han,Min Xiao,Luyi Sun,Yuezhong Meng
Lithium (Li) as one of the most promising anode materials for the next-generation batteries was unfortunately plagued by the inevitable Li dendrite growth and the dynamically destroy/reconstruction of the unstable native solid electrolyte interphase (SEI) layer, which can severely affect the specific capacity and lifespan of lithium batteries, limiting the practical application of the Li anode. In this work, we designed a single ion conducting artificial polymer SEI layer on the surface of the Li anode. The fabricated SEI layer shows high ionic conductivity and lithium transference number, which is beneficial for inducing homogeneous Li deposition, effectively suppressing the nucleation and growth of dendrite. Moreover, the uniform and stable SEI layer with a well-designed network structure can availably protect the Li anode from directly contacting with the electrolyte, reducing the related side reactions and effectually limit the additional consumption of the active Li and electrolyte. The symmetric Li cells can cycle stably over 1200 h without short-circuit at the current/capacity densities of 1 (1 mAh/cm2) and 5 mA/cm2 (5 mAh/cm2). The assembled LiFePO4/LPEDV-Li cells exhibit high capacity retention up to 81.3% after 2400 cycles at the high rate of 8 C. Therefore, the designed artificial SEI layer with excellent properties presents a high application potential in stabilizing the Li anode.
研究领域:
材料科学
·
电化学
·
电池技术
·
能源存储
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）