RARE METALS
·
2023
·Vol. 42
·期 6
·1969-1982
·
IF 8.8
Liao Jia-Lin,Zhang Shuai,Bai Tian-Sheng,Ji Feng-Jun,Li De-Ping,Cheng Jun,Zhang Hong-Qiang,Lu Jing-Yu,Gao Quan,Ci Li-Jie
Lithium metal batteries (LMBs) with a high theoretical capacity are seen as a type of the most potential energy storage system. Unfortunately, the growth of lithium dendrite, the irreversible side reactions, and the infinite volume alteration still curb the practical utilization of lithium metal anodes, resulting in low Coulombic efficiency (CE) and safety problems, etc. Herein, we synthesize a lithiophilic 3D copper foam host with uniformly distributed nano-flower-like ZnO particles (CuF/ZnO) and obtain the composite lithium metal anode containing the Li 2 O, LiZn alloy, and pure Li by the infusion of molten Li (CuF/Li 2 O-LiZn@Li). Benefitting from the advantages of the 3D structure of copper foam and the lithiophilicity of ZnO sites, the composite lithium metal anode can restrain the volume alternation and regulate the uniform deposition of lithium. The symmetrical cells of the composite lithium metal anode have a 1600 h long cycle life with a low polarization voltage of 15 mV, and the Coulombic efficiency can maintain about 97.8% at 1.0 mA·cm −2 , 1.0 mAh·cm −2 . Graphical abstract
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Yu Ye,Lei Gao,Zhi Deng,Kangdi Niu,Ruo Zhao,Juncao Bian,Haibin Lin,Jinlong Zhu,Yusheng Zhao
Lithium-rich anti-perovskite materials, with their high theoretical Li + conductivity and relatively low energy barrier for Li + transport, are highly promising as an electrolyte contender in all-solid-state lithium-metal batteries. Their current performance is however compromised by the grain boundary to result in low Li + conductivity and high activation energy . Herein, a composite electrolyte is prepared by introducing the glassy Li 3 BO 3 into the Li 2 OHCl to serve as a bridge to connect the Li 2 OHCl grains together to lower the impact from the grain boundary. The Li + conductivity of Li 2 OHCl can be improved by the presence of 10 wt% Li 3 BO 3 , and its impact on the lithium metal growth behavior is also investigated. It is found that the lithium-metal battery with Li 3 BO 3 /Li 2 OHCl prefers the deposition of lithium metal particles with larger size than that in the battery with Li 2 OHCl. Consequently, the lithium-metal symmetric cell with 10 wt% Li 3 BO 3 /Li 2 OHCl is able to display excellent cycling for over 1800 h at 0.1 mA cm −2 . The batteries with 10 wt% Li 3 BO 3 /Li 2 OHCl are also able to improve the cycle stability and rate performance. The results of this study provide the direct experimental proof of the effect of grain boundary in Li 2 OHCl on the battery performance.
研究领域:
材料科学
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电化学
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电池技术
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2024
·
IF 27.4
Ziyu Song,Mengyu Tian,Jing Zhu,Jiayi Chen,Wenfang Feng,Liubin Ben,Hailong Yu,Xuejie Huang,Michel Armand,Zhibin Zhou,Heng Zhang
The extremely high chemical reactivity of lithium metal (Li°) electrodes and its enormous volume change during repetitive cycles cause continuous interfacial degradations in prevailing organic electrolytes, thus deteriorating the cycling performances of rechargeable lithium metal batteries (LMBs). Herein, departing from traditional wisdom on the design of electrolyte components, a super SEI-forming anion (SSA), as an efficient percussor for building stable interphases on Li° electrode, is proposed. Comprehensive investigations related to the unique anion chemistry of SSA reveal that the sulfonate and polyfluoroalkyl functionalities synergistically contribute to uniform spatial distributions of designer interfacial species, greatly improving the surface coverage property and conformal ability of the resulting interphases. Consequently, the incorporation of SSA leads to significant improvements in the cyclability of Li° electrode (exceeding 575 mAh cm −2 before failure) and the corresponding rechargeable Li°||LiFePO 4 cells [a five-time increase in lifespan as compared to the benchmark cell with the popular SEI-forming anion bis(fluorosulfonyl)imide (FSI)]. The present work offers a paradigm shift to tame the notorious interfacial issues via upgraded anion chemistry, which can promote the practical development of rechargeable LMBs and other kinds of metal batteries.
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
·
2023
·
IF 6.2
Yunxing Su,Shuai Liu,Jing Shi,Minghua Huang,Zhicheng Shi,Huanlei Wang,Ting Wang
Lithium metal battery has shown extraordinary promise for electrochemical energy storage due to high theoretical capacity and low reduction potential. However, its energy density improvement and commercial application are seriously limited by the inevitable formation of dendrites and dead lithium and the infinite change of electrode volume during repeated charge-discharge processes. In this work, a three-dimensional Cu foam decorated with a lithophilic sulfide doped carbon layer (Cu 1.81 S-C@CF) is used as an advanced 3D host for long-life lithium metal anode . The average current density is effectively reduced and the volume change is accommodated by the three-dimensional porous structure. Moreover, the effects of different reaction temperature and time on surface morphology and structure of lithophilic layer on 3D current collector is also systemically studied. The Cu 1.81 S-doped carbon layer prepared at a deposition temperature of 800 °C for 2 h (Cu 1.81 S-C@CF-800–2) exhibits excellent lithium dendrite inhibition ability. The symmetrical battery with Cu 1.81 S-C@CF-800–2 as a lithium host could operate for over 6000 h with a low overpotential (about 14.9 mV) without intense voltage fluctuation. Moreover, the Li@Cu 1.81 S-C@CF-800–2 full battery matched with LiCoO 2 (LCO) cathode exhibits a high initial capacity of 142.78 mAh g −1 and excellent capacity retention of 96.4% at 0.2 C, with an average CE of 99.6% over 120 cycles. This work not only successfully prepares a long-life lithium metal anode, but also provides a new strategy for preparing and optimizing lithophilic layer of 3D current collectors.
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
RARE METALS
·
2024
·Vol. 43
·期 3
·1006-1016
·
IF 9.6
Chen Xin-Yang,Gao Xue-Jie,Wu Han-Yan,Liu Yu-Long,Yang Xiao-Fei,Sun Run-Cang
Quasi-solid-state lithium metal batteries (QSSLMBs) assembled with polyvinylidene fluoride (PVDF) are a promising class of next-generation rechargeable batteries due to their safety, high energy density, and superior interfacial properties. However, PVDF has a series of inherent drawbacks such as low ionic conductivity, ease of crystallization, and hydrophobic character that leading to poor cell properties. To tackle these issues, a lignin-reinforced PVDF electrolyte is proposed in this work to solve these drawbacks of PVDF and enhance the comprehensive performance of QSSBs. The lithophilic polar groups of lignin can promote uniform deposition of Li on the electrodes. Cooperating with the improved mechanical properties can efficiently prevent Li dendrites penetration through the separator. In addition, more active sites provided by lignin can also enhance Li + transport and lead to a faster electrochemical reaction kinetic. Benefitting from the ingenious design, Li symmetric cells with 5% lignin-PVDF quasi-solid-state electrolyte can operate for 900 h at a high current density/capacity of 5 mA·cm −2 /5 mAh·cm −2 , while short-circuiting occurs after 56 h for the counterpart (pure PVDF). Moreover, a full cell of Li/5% lignin-PVDF/LFP cell demonstrates a high capacity of 96.2 mAh·g −1 after 2000 cycles at 10 C. This work is expected to open up promising opportunities to develop other high-energy/power-density QSSLMBs. Graphical abstract
研究领域:
材料科学
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电化学
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储能
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高分子科学
·
纳米技术
✓ 已验证
DOI
高影响因子
Energy Storage Materials
·
2022
·
IF 20.831
Pengfeng Jiang,Jiaqi Cao,Bin Wei,Guoyu Qian,Shaofei Wang,Yuansheng Shi,Guangyuan Du,Xueyi Lu,Chuying Ouyang,Fahe Cao,Xia Lu
The interface compatibility lies in the heart of present investigations on solid-state batteries, now facing significant challenges in practical use. The non-coherent interface structure with the underlying complex electrochemical processes evolves dynamically to pregnant the unfriend seeds to degrade the battery performance. Therefore, interface engineering (or control) in solid-state batteries gives birth to a new theme as ‘the interface is equal to the battery’. In this context, a facile but robust technique is proposed here by smoothing the Li 1.5 Al 0.5 Ge 1.5 P 3 O 12 (LAGP) ceramic pellet with a mirror-like surface, which is found operational in running a solid battery in unprecedentedly a thousand cycles with capacity retention of 80% at 0.5C, 50 °C. Such an unconventional operation is, as a matter of fact, largely decreasing the physically interface contact but proved powerful in guiding the Li-ion homogeneous deposition. Moreover, the self-generated LiF involved interphase layer works efficiently to dynamically balance structural and electrochemical stabilities, where the LiF is introduced by the in-situ polymerization of tiny liquid electrolytes. Hence, the profound results draw the incompatible interface issues forth to the component adjustment of interphases, namely in search for rational descriptions to connect the solid-state electrolyte and electrodes, which probably holds the key to unlocking the high energy density solid-state batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2024
·Vol. 53
·期 12
·7400-7408
·
IF 2.2
Zheng Lihao,Ren Gaoya,Wang Shuai,Yang Yefeng
In all-solid lithium metal batteries, sulfide electrolytes offer superior ion conductivity. Nevertheless, they also confront significant challenges, such as the formation of internal dendrites and instability in lithium and humid air. In order to overcome these issues, a sulfide composite electrolyte has been prepared by mixing polyethylene oxide polymers with air-stable inorganic sulfide, Li 4 SnS 4 , which can achieve good chemical and electrochemical stability. Meanwhile, the introduced Li 4 SnS 4 can facilitate the movement of Li + ions in the composite electrolyte, which exhibits an elevated ion conductivity up to 2.55 × 10 −5 S cm −1 . Graphical Abstract
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
Nature Communications
·
2024
·Vol. 15
·期 1
·1-14
·
IF 14.7
Ji Weijie,Luo Bi,Wang Qi,Yu Guihui,Zhang Zixun,Tian Yi,Zhao Zaowen,Zhao Ruirui,Wang Shubin,Wang Xiaowei,Zhang Bao,Zhang Jiafeng,Sang Zhiyuan,Liang Ji
Controllable engineering of thin lithium (Li) metal is essential for increasing the energy density of solid-state batteries and clarifying the interfacial evolution mechanisms of a lithium metal negative electrode. However, fabricating a thin lithium electrode faces significant challenges due to the fragility and high viscosity of Li metal. Herein, through facile treatment of Ta-doped Li 7 La 3 Zr 2 O 12 (LLZTO) with trifluoromethanesulfonic acid, its surface Li 2 CO 3 species is converted into a lithiophilic layer with LiCF 3 SO 3 and LiF components. It enables the thickness control of Li metal negative electrodes, ranging from 0.78 μm to 30 μm. Quasi-solid-state lithium-metal battery with an optimized 7.54 μm-thick lithium metal negative electrode, a commercial LiNi 0.83 Co 0.11 Mn 0.06 O 2 positive electrode, and a negative/positive electrode capacity ratio of 1.1 shows a 500 cycles lifespan with a final discharge specific capacity of 99 mAh g −1 at 2.35 mA cm −2 and 25 °C. Through multi-scale characterizations of the thin lithium negative electrode, we clarify the multi-dimensional compositional evolution and failure mechanisms of lithium-deficient and -rich regions (0.78 μm and 7.54 μm), on its surface, inside it, or at the Li/LLZTO interface.
研究领域:
材料科学
·
电化学
·
电池技术
·
固态电解质
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Jingru Li,Han Su,Min Li,Jiayuan Xiang,Xianzhang Wu,Sufu Liu,Xiuli Wang,Xinhui Xia,Changdong Gu,Jiangping Tu
Lithium-metal batteries are promising candidates for the next-generation energy storage devices. However, notorious dendrite growth and an unstable interface between Li and electrolytes severely hamper the practical implantation of Li-metal anodes. Here, a robust solid electrolyte interphase (SEI) layer with flexible organic components on the top and plentiful LiF together with lithiophilic Zn nanoparticles on the bottom is constructed on Li metal based on the spray quenching method. The fluorinated interface layer exhibits remarkable stability to shield Li from the aggressive electrolyte and restrain dendrite growth. Accordingly, the modified Li electrode delivers a stable cycling for over 400 cycles at 3 mA cm–2 in symmetric cells. An improved capacity retention is also achieved in a full cell with a LiFePO4 cathode. This novel design of the artificial SEI layer offers rational guidance for the further development of high-energy-density lithium-metal batteries.
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 Materials & Interfaces
·
2019
·
IF 8.456
Yaoyu Ren,Yang Shen,Yuanhua Lin,Ce-Wen Nan
Al-contained Li7–xLa3Zr2–xTaxO12 (xTa-LLZO) powder was synthesized via solid-state reaction, where increasing the Ta doping level was found to reduce the average particle size and facilitate a higher relative density in the sintered pellet. 0.8Ta-LLZO pellets sintered at 1150 °C achieved a relative density of 96.2 ± 0.2% and survived the Li striping/plating test under a unidirectional current polarization of 0.5 mA/cm2 for more than 8 h without short-circuiting. In contrast, other xTa-LLZO sintered pellets with lower Ta doping levels were short-circuited by lithium dendrites after polarization for much shorter time periods. The microstructure of the sintered body played a more essential role in lithium dendrite prevention compared to relative density alone. By characterizing the microstructure of xTa-LLZO sintered pellets, we proposed a formation mechanism of the pathways for lithium dendrite growth.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
Energy Storage Materials
·
2020
·
IF 16.28
Chuanliang Wei,Huifang Fei,Yuan Tian,Yongling An,Huanhuan Guo,Jinkui Feng,Yitai Qian
Li metal is regarded as the most promising anode for lithium-based batteries due to its extremely high theoretical capacity and the lowest working potential. However, dendrite caused by uneven Li deposition inhibits its practical application. Here we propose a new concept of utilizing amorphous metallic nucleation seeds to induce the uniform deposition of Li. Amorphous 3 °C liquid metal coated on MXene framework is selected as an example for deep investigation. The results indicate that amorphous liquid metal nucleation seeds are stable against MXene and can induce isotropic nucleation and uniform growth of Li. The Coulombic efficiency and performance of symmetric cells are obviously improved both in ether-based and carbonate-based electrolyte under the regulation of amorphous liquid metal seeds. Full lithium metal cells with LiFePO 4 and crumpled MXene nanosheet encapsulated LiMn 2 O 4 cathodes also exhibit better electrochemical performance after modification. Additionally, the concept may be useful for developing other metal based anodes.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2021
·
IF 4.464
Xianli Huang,Dongmei Zhuang,Zhihui Chen,Hao Gong,Tao Wang,Jianping He,Xiaogang Zhang
It is so far an efficient way for depressing dendrite growth to adjust the electrolyte composition . Therefore, we study the electrochemical behavior of lithium metal electrodeposited in a LiPF 6 -propylene carbonate (PC) electrolyte by adding two kinds of crown ether . The effect of crown ether concentration on the Coulombic efficiency of lithium electrodes has be evaluated, and the electrodeposition behavior of lithium metal on negative electrode has be analyzed by cyclic voltammetric curve, electrodeposition curve and lithium metal deposition morphology. The results show that a certain amount of crown ether (15-crown-5 and 12-crown-4) can preferentially coordinate with lithium ion in the electrolyte and form complex compounds, which reduce the lithium ions concentration in the “hot spot” and level the lithium electrode greatly by inhibiting the preferential growth of lithium dendrite . A uniform and dense nano-columnar lithium layer could be obtained at the current density of 2.0 mA cm −2 when the deposition amount is 1.0 mAh cm −2 , and the concentration of 15-crown-5 and 12-crown-4 ether are 0.3 M and 0.2 M, respectively. Gaussian calculation results show that the lithium-crown complex has a relatively lower lowest unoccupied molecular orbit (LUMO), where electrons could be injected during the charging process, leading to decreased Coulumbic efficiency.
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）