Energy & Environmental Materials
·
2022
·Vol. 7
·期 1
·e12498
·
IF 13.443
Zhengyi Lu,Lin Peng,Yi Rong,Enli Wang,Ruhua Shi,Hongxun Yang,Yadong Xu,Ruizhi Yang,Chao Jin
Poly(ethylene oxide) (PEO) and Li 6.75 La 3 Zr 1.75 Ta 0.25 O 12 (LLZTO)-based composite polymer electrolytes (CPEs) are considered one of the most promising solid electrolyte systems. However, agglomeration of LLZTO within PEO and lack of Li + channels result in poor electrochemical properties. Herein, a functional supramolecular combination (CD-TFSI) consisting of active β-cyclodextrin (CD) supramolecular with self-assembled LiTFSI salt is selected as an interface modifier to coat LLZTO fillers. Benefiting from vast H-bonds formed between β-CD and PEO matrix and/or LLZTO, homogeneous dispersion and tight interface contact are obtained. Moreover, 6 Li NMR spectra confirm a new Li + transmission pathway from PEO matrix to LLZTO ceramic then to PEO matrix in the as-prepared PEO/LLZTO@CD-TFSI CPEs due to the typical cavity structure of β-CD. As a proof, the conductivity is increased from 5.3 × 10 −4 S cm −1 to 8.7 × 10 −4 S cm −1 at 60 °C, the Li + transference number is enhanced from 0.38 to 0.48, and the electrochemical stability window is extended to 5.1 V versus Li/Li + . Li‖LiFePO 4 CR2032 coin full cells and pouch cells prove the practical application of the as-prepared PEO/LLZTO@CD-TFSI CPEs. This work offers a new strategy of interface modifying LLZTO fillers with functional supramolecular combination to optimize PEO/LLZTO CPEs for solid lithium batteries.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
Science Advances
·
2022
·Vol. 8
·期 40
·
IF 14.957
Jing Xu,Yang Jin,Kai Liu,Nawei Lyu,Zili Zhang,Bin Sun,Qianzheng Jin,Hongfei Lu,Huajun Tian,Xin Guo,Devaraj Shanmukaraj,Hui Wu,Meicheng Li,Michel Armand,Guoxiu Wang
Recycling lithium from spent batteries is challenging because of problems with poor purity and contamination. Here, we propose a green and sustainable lithium recovery strategy for spent batteries containing LiFePO4, LiCoO2, and LiNi0.5Co0.2Mn0.3O2 electrodes. Our proposed configuration of “lithium-rich electrode || LLZTO@LiTFSI+P3HT || LiOH” system achieves double-side and roll-to-roll recycling of lithium-containing electrode without destroying its integrity. The LiTFSI+P3HT-modified LLZTO membrane also solves the H+/Li+ exchange problem and realizes a waterproof protection of bare LLZTO in the aqueous working environment. On the basis of these advantages, our system shows high Li selectivity (97%) and excellent Faradaic efficiency (≥97%), achieving high-purity (99%) LiOH along with the production of H2. The Li extraction processes for spent LiFePO4, LiNi0.5Co0.2Mn0.3O2, and LiCoO2 batteries is shown to be economically feasible. Therefore, this study provides a previously unexplored technology with low energy consumption as well as high economic and environmental benefits to realize sustainable lithium recycling from spent batteries.
研究领域:
材料科学
·
环境科学
·
可持续发展
·
电池技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sensors
·
2023
·
IF 8.9
Chen-Xi Bi,Kai-Qi Jin,Jing Yan,Yu Qin,Feng Hong,Wei-Hua Huang,Yan-Ling Liu
Vascular smooth muscle cells (SMCs) are circumferentially oriented perpendicular to the blood vessel and maintain the contractile phenotype in physiological conditions. They can sense the mechanical forces of blood vessels expanding and contracting and convert them into biochemical signals to regulate vascular homeostasis. However, the real-time monitoring of mechanically evoked biochemical response while maintaining SMC oriented growth remains an important challenge. Herein, we developed a stretchable electrochemical sensor by electrospinning aligned and elastic polyurethane (PU) nanofibers on the surface of PDMS film and further modification of conductive polymer PEDOT:PSS-LiTFSI-CoPc (PPLC) on the nanofibers (denoted as PPLC/PU/PDMS). The aligned nanofibers on the electrode surface could guide the oriented growth of SMCs and maintain the contractile phenotype, and the modification of PPLC endowed the electrode with good electrochemical sensing performance and stability under mechanical deformation. By culturing cells on the electrode surface, the oriented growth of SMCs and real-time monitoring of stretch-induced H2O2 release were achieved. On this basis, the changes of H2O2 level released by SMCs under the pathology (hypertension) and intervention of natural product resveratrol were quantitatively monitored, which will be helpful to further understand the occurrence and development of vascular-related diseases and the mechanisms of pharmaceutical intervention.
研究领域:
生物材料
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组织工程
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生物医学工程
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细胞生物学
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电化学
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心血管研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Pengfei Pang,Yiran Bai,Hu Wang,Jiangchao Chen,Furong Zhang,Zhuoyan Yi,Yunyun Zhao,Kunpeng Jiang,Guisheng Zhu,Huarui Xu
The all-solid-state lithium batteries (ASSLBs) are widely acknowledged as the most promising candidate for energy storage devices due to their excellent safety features and high energy density. However, ASSLBs face significant challenges in terms of low ionic conductivity and the formation of lithium dendrites. Excitingly, composite solid-state electrolytes offer promising solutions to critical challenges. Here, we report a PEO-LiTFSI/LGLZTO organic-inorganic composite solid-state electrolytes (O-ICSEs). A high-performance Li 6.4 Ga 0.10 La 3 Zr 11.7 Ta 0.30 O 12 particles, co-doped with Ga and Ta, was incorporated into matrices of poly (ethylene oxide) (PEO) and lithium bis(trifluoro-methylsulfonyl)imide (LiTFSI) to establish a continuous pathway for the transportation of Li + . Additionally, the synergistic effect of Ga and Ta enhances the Li + transport capability within the LGLZTO particles. PEO-LiTFSI/LGLZTO O-ICSEs, which have fast ion transport channels, exhibit exceptional ionic conductivity (4.35 × 10 −4 S cm −1 at 60 °C) and possess a wide and stable electro- chemical window (5.5 V). The Li||PL(Ga 0.10 Ta 0.30 ) 25 ||Li cell demonstrates an outstanding cycle life exceeding 1000 h at a current density of 0.2 mAh cm −2 . The prominent electrochemical performance of PL(Ga 0.10 Ta 0.30 ) 25 O-ICSEs can primarily be attributed to their excellent electrode/electrolyte interfacial compatibility and effective suppression of Li dendrite growth. The proposed PL(Ga 0.10 Ta 0.30 ) 25 O-ICSEs offer a promising solution for designing highly efficient ASSLBs.
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
LANGMUIR
·
2022
·
IF 4.331
Kaiming Zhang,Sheng Chen,Yanglei Chen,Liangying Jia,Can Cheng,Shuli Dong,Jingcheng Hao
For a long time, the potential application of gel-based ionic devices was limited by the problem of liquid leakage or evaporation. Here, we utilized amorphous, irreversible and reversible cross-linked polyTA (PTA) as a matrix and lithium bis(trifluoromethane sulfonamide) (LiTFSI) as an electrolyte to prepare a stretchable (495%) and self-healing (94%) solvent-free elastomeric ionic conductor. The liquid-free ionic elastomer can be used as a stable strain sensor to monitor human activities sensitively under extreme temperatures. Moreover, the prepared elastic conductor (TEOA0.10-PTA@LiTFSI) was also considered an electrode to assemble with self-designed repairable dielectric organosilicon layers (RD-PDMS) to develop a sustainable triboelectric nanogenerator (SU-TENG) with outstanding performance. SU-TENG maintained good working ability under extreme conditions (−20 °C, 60 °C, and 200% strain). This work provided a low-cost and simple idea for the development of reliable iontronic equipment for human–computer interaction, motion sensing, and sustainable energy.
研究领域:
材料科学
·
纳米技术
·
电子学
·
可持续能源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 44
·23344-23353
·
IF 11.301
Pengfei Zhai,Na Peng,Zeyu Sun,Wenjia Wu,Weijie Kou,Guoshi Cui,Kang Zhao,Jingtao Wang
The development of thin solid-state electrolyte with high ionic conductivity and mechanical strength is of great importance for the high-performance all-solid-state lithium–sulfur battery. However, the state-of-the-art solid polymer electrolyte suffers from poor ionic conductivity and a high thickness but inferior mechanical strength. Herein, a thin laminar composite solid electrolyte (LCSE), namely Vr/PEO-LCSE, is fabricated by filtrating vermiculite nanosheets, followed by intercalation of PEO–LiTFSI into the interlayer through a swelling and filtration method. The continuous interlayer channels with improved PEO chain motility and LiTFSI dissociation afford Vr/PEO-LCSE a highly enhanced ionic conductivity of 1.22 × 10−5 S cm−1 at 25 °C. Together with the low thickness (10 μm), Vr/PEO-LCSE achieves an ultralow area-specific resistance of 66 Ω cm2 at 30 °C, about 50 times lower than pure PEO. Meanwhile, the typical brick-and-mortar architecture combined with the strong rigidity of vermiculite nanosheet imparts Vr/PEO-LCSE an excellent compressive strength of 131 MPa, 550% higher than that of pure PEO. As a result, the rate performance of the assembled Li–S battery is significantly improved. The Li|Vr/PEO-LCSE|S cell achieves low capacity fading as current density increases from 0.05C to 0.20C, and the discharge capacity recovers to 1100 mA h g−1 when the current density switches back to 0.05C.
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
·
2025
·
IF 9.7
Yipeng Yang,Yanting Ma,Kaineng Feng,Songsheng Zheng,Zhaolin Wang
Semi-solid electrolytes tend to inherit the advantages of both solid-state electrolytes and liquid electrolytes. However, the challenge is to simultaneously enhance both ionic conductivity, transference number and long cycle performance of batteries. In this study, a semi-solid electrolyte was successfully synthesized with a hollow structured metal organic framework (HMOF) and a polymer binder (PVDF). The hollow structure of HMOF serves as a framework to encapsulate a large amount of lithium salt and electrolyte, reducing concentration polarization in lithium metal batteries. Its unique pore structure and abundant hydroxyl functional groups can restrict anion movement, thereby increasing the Li-ion transference number. On the other hand, the PVDF acts as a binder, making the electrolyte thinner, more flexible, and easier to process for broader applications. Furthermore, a Li@HMOF semi-solid electrolyte (LHMSSE) was fabricated by adding Bis (trifluoromethane) sulfonimide lithium salt (LiTFSI) into the HMOF(Li@HMOF), which exhibits a high ionic conductivity of 0.89 mS cm −1 at 30 °C and a high Li-ion transference number of 0.75 at 30 °C. Notably, the Lithium symmetric battery of Li||LHMSSE ||Li can operate stably for over 1200 h at a current density of 0.2 mA cm −2 , and the lithium metal full battery of Li||LHMSSE||LFP (LiFePO 4 ) retains a capacity of 127.7 mAh g −1 after 2000 cycles at 1C, with a capacity retention rate of 89.1 % and an average coulombic efficiency of 99.9 %. When paired with high-load LFP (10 mg cm −2 ) or NCM811 (LiNi 0.8 Co 0.1 Mn 0.1 O 2 ) (10 mg cm −2 ) cathodes, a stable cycling performance can be achieved at a rate of 0.2C.
研究领域:
材料科学
·
电化学
·
储能技术
·
纳米技术
·
电池技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Changfei Zou,Li Yang,Kaili Luo,Lei Liu,Xiyuan Tao,Lingguang Yi,Xianhu Liu,Xiaoyan Zhang,Xianyou Wang
Due to the advantages of high safety and high energy density, solid-state lithium batteries (SSLBs) are promising competitors for next-generation batteries. Unfortunately, the growth of Li dendrites and irreversible capacity loss caused by the Li metal anode/solid electrolyte interfacial incompatibility remain challenges. Herein, an in situ formed artificial protective layer between the lithium metal anode and solid electrolyte Li6PS5Cl (LPSC) is introduced. A stable solid electrolyte interface (SEI) is in situ formed in the Li/Li6PS5Cl interface via the electrochemical reduction of the liquid electrolyte LiTFSI/tetraethylene glycol dimethyl ether (Li(G4)TFSI), which is beneficial for the improvement of the stability of interfacial chemistry and homogeneous lithium deposition behavior. The assembled Li/Li(G4)TFSI-assisted Li6PS5Cl/Li symmetric cells enable stable cycles for 850 and 400 h at a current density of 0.1 and 0.2 mA/cm2, respectively. Moreover, the LiNi0.6Co0.1Mn0.3O2(NCM613)/Li(G4)TFSI-assisted Li6PS5Cl/Li SSLBs can achieve prominent cycling stability at room temperature. This work provides a new insight into the interfacial modification to design SSLBs with high energy density.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Yaping Wang,Pengcheng Yuan,Xiong Xiong Liu,Shengfa Feng,Mufan Cao,Jianxiang Ding,Jiacheng Liu,Song-Zhu Kure-Chu,Takehiko Hihara,Long Pan,ZhengMing Sun
Composite solid electrolytes (CSEs) integrate the fast ion conductivity of inorganic electrolytes and the excellent interfacial compatibility of polymer electrolytes. Typically, fluoropolymers and garnets are promising individuals to formulate cutting-edge CSEs owing to their unique properties. However, the alkaline garnets can induce the dehydrofluorination of fluoropolymers, deteriorating their CSEs performance. Here, for the first time, NH 4 HCO 3 is proposed as a sacrificial inhibitor to effectively prevent the garnet-induced dehydrofluorination, using Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) and poly(vinylidene fluoride- co -hexafluoropropylene) (PVH) as symbolic garnets and fluoropolymers, respectively. Various findings demonstrate that NH 4 HCO 3 can buffer the alkalinity of LLZTO, thereby inhibiting the dehydrofluorination of PVH. In addition, NH 4 HCO 3 can completely decompose to volatiles upon drying without compromising the properties of LLZTO and PVH. Additionally, a polymer-in-salt strategy is further introduced by adding high-concentration LiTFSI salt to the above system, resulting in the PVH/LiTFSI/LLZTO (PLL) CSEs. Benefiting from the synergetic coupling of the sacrificial inhibitor and polymer-in-salt strategies, the PLL exhibits an exceptionally high ionic conductivity of 1.2 mS cm −1 at 25 °C and stable voltage of 5.09 V, outperforming other reported CSEs. Consequently, the PLL delivers impressive high-rate cyclability in solid-state lithium-metal batteries with an outstanding capacity retention of 95.4% after 240 cycles at 1 C (25 °C).
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Xiuling Dong,Wei Chen,Xinyi Ge,Shuangqing Li,Zheng Xing,Qingguo Zhang,Zhong-Xia Wang
Conductive hydrogels show great promise in the field of flexible electronics, but traditional hydrogels have some problems such as poor environmental tolerance, being easy to damage and not being durable. In this work, polyacrylamide (PAM) was used as the main network, and polyvinylalcohol (PVA) was added to construct a dual network hydrogel. Simultaneously, LiTFSI was added to improve hydrogel ionic conductivity, and multiple interionic and intermolecular interactions formed within the gel, significantly improving the gel's mechanical properties and durability. The area specific capacitance of the hydrogel-based supercapacitor is 383.4 mF cm −2 , and it still maintains a high cycle life of 90.35 % after 10,000 cycles. The hydrogel-based strain sensor shows fatigue resistance, rapid recovery after 400 stretches, high sensitivity (GF = 3.83 at 300–400 %), and the ability to detect human motion. Therefore, the multi-functional properties of PAM/PVA/LiTFSI hydrogels are expected to play a demonstration role in a new generation of flexible electronic products.
研究领域:
材料科学
·
电化学
·
柔性电子
·
可穿戴技术
✓ 已验证
DOI
高影响因子
Nanoscale
·
2022
·Vol. 14
·期 38
·14122-14128
·
IF 8.307
Chenchao Huang,Zishou Hu,Yuan-Qiu-Qiang Yi,Xiaolian Chen,Xinzhou Wu,Wenming Su,Zheng Cui
Manufacturing cost is a major concern for electrochromic device (ECD) applications in smart windows for energy saving and low-carbon economy. Fully printing instead of a vacuum-based chemical vapor deposition (CVD) process is favored for large-scale fabrication of ECDs. To adapt to the screen printing process, a UV curable solid-state electrolyte based on lithium bis(trifluoromethane-sulfonyl) imide (LiTFSI) was specially formulated. It contains poly(ethylene glycol) diacrylate (PEG-DA), LiTFSI, water, and ethyl acetate. The optimized ECDs have achieved a 0.6 s bleaching time at 0.6 V and a 1.4 s coloring time at −0.5 V. The ECDs also exhibited excellent stability, which could endure 100 000 cycles of color switching while still maintaining 35% of transmittance change at a 550 nm wavelength. A demo ECD has been fabricated with a screen printed electrolyte, exhibiting stable switching between the clear state and patterned color state.
研究领域:
材料科学
·
电化学
·
能源效率
·
制造技术
✓ 已验证
DOI
高影响因子
Functional Materials Letters
·
2024
·
IF 1.2
Shenwei Zhang,Dongrui Chen,Wenmin Guo,Xiaoming Wang,Zhibin Ding,Xiaofu Tang,Junxia Zhang,Haijiang Wu,Diping Zeng,Hongqing Wei,Wenjun Wang,Yi Ma,Jinhua Zhou,Zaijun Su
This paper employs electrochemical methods (linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS)) to investigate the electrochemical behavior of platinum, glassy carbon, 304 stainless steel, titanium, and copper in 21 and 1 M LiTFSI electrolytes. The LSV results indicate that the electrochemical stability window of the materials varies with the electrolyte concentration, and the stability window is wider in the high-concentration system. Through Tafel polarization curves and EIS analysis, the overpotential of the charge exchange process differs due to the type of material and the concentration of the electrolyte, mainly attributed to the influence of the proportion of free water, electrolyte viscosity, and SEI film formation on electrode process kinetics. After comparative analysis, glassy carbon exhibits a higher overpotential than other materials at both the cathode and anode, effectively suppressing water decomposition. These findings provide theoretical support for the development of high-performance aqueous lithium-ion battery current collector materials.
研究领域:
电化学
·
储能
·
材料科学
·
电池技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）