ADVANCED MATERIALS
·
2024
·Vol. 36
·期 35
·2406632
·
IF 27.4
Yuhang Yin,Fei Yan,Shuyang Li,Yufan Chen,Dingcheng Guo,Jie Zhao,Dalin Sun,Fang Fang,Yun Song
As the core component of all-solid-state batteries, current solid-state electrolytes fail to simultaneously meet multiple demands, such as their own high performance, the chemical, electrochemical and mechanical compatibility of electrode interface. A fresh perspective is rather desired to guide the development of novel solid electrolytes with comprehensive performance. Herein, this work proposes a novel strategy to synthesize solid electrolytes extracted from cathode-electrolyte interphase (CEI), which is inspired by peach trees secreting peach gum to prevent further damage. A proof-of-concept, using LiBH 4 -Se and LiBH 4 -S as prototypes, confirms that as-synthesized electrolytes inherited and improved up the advantages of LiBH 4 with unexpected compatibility toward multiple cathodes. It is believed that the family of new electrolytes will be continuously expanded under the guidance of this CEI-derived concept.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2018
·
IF 6.945
Lei Cao,Xinghai Zhou,Zhenhuan Li,Kunmei Su,Bowen Cheng
Nitrogen and fluorine co-doped hierarchical honeycomb-like carbon nanofibers (N F-CNFs-950) are prepared by electro-blown spinning technology and high temperature calcination . It possesses large specific surface area, micro/meso/macro hierarchical through-pore structure, high pyridine-N and graphite-N content. These characteristics make it exhibit an outstanding alkaline electrocatalytic oxygen reduction reaction (ORR) activity (half wave potential of 0.833 V vs reversible hydrogen electrode and current density of 5.48 mA cm −2 ). In particular, the introduction of the ionic C F/N F successfully avoids the inactivation of pyridine N in the carbon skeleton due to protonation in the acidic electrolyte. And the ionic C F/N F activated pyridine N work synergistically with graphite N to promote N F-CNFs-950 to exhibit an acidic ORR activity (half wave potential of 0.606 V vs reversible hydrogen electrode and current density of 5.58 mA cm −2 ) that is only second to commercial Pt/C. Importantly, the N F-CNFs-950 catalyst exhibits much better methanol tolerance and electrochemical stability in both alkaline and acidic environments.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Energy Chemistry
·
2024
·
IF 14
Kun Shi,Changsong Yu,Dawei Zheng,Zeheng Yang,Weixin Zhang
The immerging three dimensional (3D) metal-organic framework (MOF)-reinforced composite solid-state electrolytes have attracted great interest because of the enhanced ionic conductivity and mechanical properties. However, the defective spatial arrangement of MOFs restricted by fabrication methodology leads to insufficient lithium ion transport in electrolytes. Herein, a 3D interconnected MOF framework tailored for all-solid-state electrolytes is rationally designed by a universal polydopamine (PDA)-engineered “double-sided tape” strategy. The PDA serves as a double-sided tape, firmly adhering on the special single-layer Nylon grid as well as offering uniform nucleation sites to anchor the metal nodes to ensure continuous growth of well-ordered MOFs. Benefiting from the Lewis acid feature of MOFs and its cage effect toward TFSI − , a fast and homogeneous lithium ion transport can be achieved through the internal channels within neighboring MOFs and the continuous MOFs/polymer interfaces both along the short-range circumferential boundary of Nylon fiber. The resultant composite electrolytes exhibit high lithium ion conductivity and prominent mechanical properties, rendering excellent cyclic stability whether used in coin or pouch cells. This work demonstrates a widely applicable “double-sided tape” strategy for controllable spatial arrangement of MOF nanoparticles on optional substrates, which provides a scalable approach to rationally construct desired lithium ion pathways within composite electrolytes.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
DOI
高影响因子
Advanced Materials Interfaces
·
2020
·Vol. 7
·期 20
·2000830
·
IF 4.948
Sajid Hussain Siyal,Muhammad Sufyan Javed,Ashique Hussain Jatoi,Jin-Le Lan,Yunhua Yu,Muhammad Saleem,Xiaoping Yang
Lithium–metal batteries (LiMBs) are promising energy storage devices due to the high capacity and minimum negative electrochemical potential. Nevertheless, their concrete applications remain disturbed by unbalanced electrolyte–electrode interfaces, limited electrochemical window, and high risk. Herein, a novel strategy to obtain dual ceramic-based electrolytes that possesses a great potential in energy storages and higher level of energy densities in LiMBs. Dual-ceramic (lithium aluminum titanium phosphate -lithium lanthanum titanium oxide (LATP-LLTO)) gel polymer electrolyte (DCGPE) film developed via the curable system aims to prepare flexible Li + interpenetrating network film to integrate the two ceramic structures with polyethylene oxide (PEO) to yield the free-standing electrolytes film for better battery safety and desired interfacial stability. The DCGPEs films present a satisfactory electrochemical performance, including good ionic conductivity, large transference number, and wide electrochemical stability window at room temperature. Most importantly, the fundamental function of LATP and LLTO is to support building a stable solid-electrolyte-interphase and limits the growth of dendrites. Thus, prepared dual ceramic-based electrolytes effectively render to inhibit lithium dendrite growth in a symmetrical cell Li//PEO + 10% LATP + 15% LLTO//Li test during charge/discharge at a current density of 2 and 0.25 mA cm −2 above 2400 h without short-circuiting occurrence at room temperature. Besides, the battery assembled of LiFePO 4 /PEO + 10% LATP + 20% LLTO/Li exhibits superior cyclic stability with high Coulombic efficiency. This study recommends that the binary network structures of Li-ion conductor help to design a prime solution of promising electrolyte for high-performance LiMBs applications.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2018
·
IF 6.945
Zhenyao Wei,Shaojie Chen,Junye Wang,Zhihao Wang,Zhihua Zhang,Xiayin Yao,Yonghong Deng,Xiaoxiong Xu
A large-size, bipolar-stacked and high-safety solid-state lithium battery with integrated electrolyte and cathode is fabricated conveniently via solvent-free UV-cure. Firstly, a series of new solid polymer electrolytes are synthesized through UV-cure, and exhibit a maximum conductivity of 1.29 × 10 −4 S cm −1 (60 °C), a wide electrochemical window (0–5.1 V) and excellent compatibility with Li. Secondly, solid-state LiFePO 4 /Li cell with integrated electrolyte and electrode is fabricated and delivers a high capacity of 113.3 mAh g −1 after the 100 th cycle, and the capacity retention is 90.2%. The outstanding cell performance is ascribed to the integrated electrolyte/cathode design which is beneficial for the interfacial impedance decreasing. Finally, a 5 cm × 8 cm size battery with integrated electrolyte/cathode is assembled conveniently, and it presents the 80.55% retention of discharge capacity at the 200 th cycle and high-safety. It can be well work under the conditions of bending, cutting, on the fire and even after nail penetration. Remarkably, the bipolar-stacked battery is also fabricated, and the open circuit voltage is as high as 6.33 V. Consequently, this work develops a series of new solid polymer electrolytes and proposes an advanced cell construction design for solid-state lithium batteries which is very suitable for the large-scale preparation.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2020
·
IF 8.247
Xinpeng Han,Jie Sun
Red phosphorus (RP) has recently gained great attention for high-energy-density fast-charging lithium-ion batteries (LIBs) due to its high theoretical specific capacity (2596 mA h g −1 ) and safe lithiation voltage (ca. 0.7 V vs. Li + /Li). Here, we adopt a new electrolyte system, the thermally stable lithium bis(fluorosulfonyl)imide (LiFSI) in the mixed solvents of intrinsically flame-retardant triethyl phosphate (TEP) and fluoroethylene carbonate (FEC) as a solid electrolyte interface (SEI)-forming additive, resulting in an enhanced electrochemical performance for the application of P anode. LiFSI avoids the side effect of fluorination that is prone to occur at the surface of P particles in commonly used lithium hexafluorophosphate (LiPF 6 )-based electrolyte. As a result, combining the ternary synergy of LiFSI, TEP and FEC, a favorable and stable lithium fluoride (LiF) and non-Li x PF y based SEI is constructed on the RP anode through the preferential reduction of the Li + solvation structure, and subsequent reduction deposition of FSI − anion and FEC solvent. This stable SEI plays a critical role in alleviating the huge volumetric expansion of P, decreasing the reactivity of P anode within electrolyte during cycling process and thus enhancing the fast-charging performance of P anode.
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
CHINESE JOURNAL OF CATALYSIS
·
2022
·
IF 12.92
Qixian Xie,Dan Ren,Lichen Bai,Rile Ge,Wenhui Zhou,Lu Bai,Wei Xie,Junhu Wang,Michael Grätzel,Jingshan Luo
Nickel iron layered double hydroxide (NiFe LDH) is one of the best oxygen evolution reaction (OER) catalysts in alkaline electrolytes. However, it performs poorly in neutral electrolytes, and the detailed mechanism is still unclear. Herein, we introduce electrochemical measurements, operando surface enhanced Raman spectroscopy and operando 57 Fe Mössbauer spectroscopy to elucidate the mechanism of NiFe LDH for OER process in different pH electrolytes. Our results show that even though there exist Ni 3+ and Fe 4+ species, the NiFe LDH based electrocatalysts still show worse OER performance in neutral electrolytes than in alkaline conditions. Combining the electrochemical measurements with spectroscopic investigations, we demonstrated that the rate-determining step (RDS) of OER on NiFe LDH based electrocatalysts is from *O to *OOH in alkaline medium while *OH formation is the RDS in neutral conditions. Our work provides new insights into elucidating the OER mechanism in different pH electrolytes.
研究领域:
电化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Tingzhi Deng,Qiwei Han,Huanhuan Liu,Ji Hu,Jing Wang,Xinyue Huang,Qiuxiao Lu,Zhipeng Wang,Binghua Zhou
Lithium metal has attracted extensive attention as a promising anode material for high-performance lithium batteries. However, an unstable and fragile solid electrolyte interphase (SEI) could be formed by the side reactions between Li metal and liquid electrolytes and induce the formation of dendritic growth. Here, we propose a facile strategy to fabricate fluorine- and nitrogen-donating gel polymer electrolytes (FN-GPEs) via the polymerization of hexafluorobutyl methacrylate (HFBMA) and triazole-based methacrylate (TBMA). A uniform porous structure is formed through the regulation of the ratio of HFBMA and TBMA in the polymer matrix, which is beneficial for absorbing the liquid electrolyte and enhancing the ionic conductivity. More significantly, the FN-GPEs containing abundant fluorinated and nitrided chains could form a stable SEI in situ with the components of LiF and Li3N. This facile strategy can achieve the complementary advantages of LiF- and Li3N-based SEI protective layers and significantly enhance the interfacial stability. Consequently, the FN-GPEs exhibit high porosity, high ionic conductivity, enhanced Li-ion transference number, and a wide electrochemical window, which endow the Li/Li symmetrical cells with excellent cyclic stability, and the LiFePO4/Li batteries show good long-term cycling stability. This work provides a new avenue to construct a stable SEI in situ on Li metal via molecular design to achieve high-performance LMBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Yinshuang Pang,Qingxue Lai,Haobo Xia,Wanying Zhang,Hong Chen,Ran Chen,Zixia Lin,Jing Zheng
Covalent-organic-framework (COF) materials with a designable periodic framework have been expected as a kind of promising anode material for potassium ion batteries (PIBs). However, these materials suffer seriously from low capacity, poor rate performance, and slow reaction kinetics during the K-storage process, significantly limiting their widespread applications. Herein, a three-dimensional (3D) COF material denoted as CN-COF with a high N content and defined configuration as well as a graphite-like layer stacking structure was developed as a promising anode to realize efficient 3D K-storage performance with enhanced interfacial stability and reaction kinetics via an electrolyte chemistry compatibility strategy. Particularly, a uniform and stable solid-electrolyte interphase (SEI) with rich inorganic components was controllably formed in the optimized high-concentration THF-based electrolyte (HTE), ensuring satisfactory cycling stability as well as rapid diffusion kinetics. As a result, the synthesized CN-COF material in this optimized electrolyte delivered a high reversible capacity of 385.8 mAh/g at 50 mA/g, and a well-maintained 95.3 mAh/g after 1500 cycles at 500 mA/g. This work provides innovative design and manipulation of the K-storage mechanism via the synergistic effect between nanostructure design and electrolyte chemistry for advanced K-storage materials.
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 ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Siyu Yi,Zhen Yang,Siru He,Zhongsheng Wang,Yuejiao Chen,Libao Chen
Additives provide a cost-effective and practical strategy to advance battery technology development. In light of the incompatibility between commercial carbonate electrolytes and lithium metal anodes, coupled with the capacity degradation of lithium metal batteries (LMBs) under low-temperature conditions, this study examines the effect of oxygen content in the molecular structure of sulfur-based additives. Through systematic oxygen content modulation, the bond order was effectively tuned, promoting the dissociation of sulfur-containing moieties and enabling precise control of the electrolyte/electrode interface. The rationally designed sulfur-containing additive, dimethyl sulfate (DMS), demonstrates significant enhancement in battery electrochemical performance across both ambient and low-temperature conditions. DMS facilitates the formation of a robust solid electrolyte interphase (SEI) layer on the anode surface, effectively suppressing parasitic reactions and improving cycling stability. At subzero temperatures, it significantly enhances ionic transport kinetics, leading to improved capacity retention and rate capability. This study provides fundamental insights into electrolyte additive engineering, presenting a promising strategy for advancing the performance and stability of lithium metal batteries.
研究领域:
材料科学
·
电化学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2022
·
IF 10.508
Jing Xie,Yuepeng Guan,Yaqin Huang,Yi-Chun Lu
Molecular crowding electrolytes extend the stability window of aqueous batteries with water-miscible/soluble polymers at a low concentration of lithium salts [2 m lithium bis(trifluoromethane sulfonyl)imide (LiTFSI)]. Water decomposition [especially hydrogen evolution reaction (HER)] is effectively suppressed, enabling the use of numerous negative electrodes which cannot work in traditional aqueous electrolytes. However, the mechanism underlying the cathodic stability of molecular crowding electrolytes is not yet fully understood. Here, we compare the HER suppression effect in molecular crowding electrolytes with LiTFSI and lithium perchlorate and correlate their distinct cathodic stability to the difference in the solid–electrolyte interphase (SEI). This work reveals the critical role of LiF in developing a stable SEI and suppressing the HER in molecular crowding electrolytes, providing a design path for safe, low-cost, and high-voltage aqueous batteries.
研究领域:
电化学
·
材料科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zuojie Xu,Rong Huang,Pengfei Huang,Chaowei He,Shenwen Liu,Haonan Zheng,Wenlong Song,Lu Shi,Weiwei Gao,Dan Li,Hui Huang,Hangjun Ying,Wei-Qiang Han
Silicon oxide (SiO x ) anodes are considered to be the promising alternative to graphite anodes for lithium-ion batteries. However, the traditional carbonate electrolyte fails to generate the effective solid electrolyte interface (SEI) on SiO x anodes to well adapt the large volume expansion of SiO x particles. Herein, a weakly solvated perfluorinated electrolyte with dual lithium salts was designed to match SiO x anodes. The perfluorinated solvent with weakened solvation ability and the strong coordination of Li + -DFOB − and Li + -TFSI − lead to an anion-dominated solvated shell, which induces the formation of inorganics-rich SEI. The high-strength bonds (Li-F, B-F, B-O, B-N et al.) enable high mechanical strength and rapid ion migration of the SEI film, thereby effectively accommodating the volume expansion of SiO x and avoiding continuous decomposition of the electrolyte. Furthermore, as designed electrolyte also shows excellent flame retardancy and high voltage stability. Consequently, the SiO x anode exhibits remarkably improved cycling performance in contrast to that in traditional carbonate electrolyte, maintaining 1073.7 mAh/g after 300 cycles at 1.0 A/g when paired with metal Li, and presents excellent compatibility with commercial cathodes including LiFePO 4 and LiNi 0.8 Co 0.1 Mn 0.1 O 2 . This work provides a new inspiration and path for the design of electrolyte highly matched with silicon oxide anodes.
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）