Nano Research
·
2021
·Vol. 14
·期 10
·3576-3584
·
IF 8.897
Wei Chuanliang,Wang Yusheng,Zhang Yuchan,Tan Liwen,Qian Yi,Tao Yuan,Xiong Shenglin,Feng Jinkui
Lithium metal (Li) is believed to be the ultimate anode for lithium-ion batteries (LIBs) owing to the advantages of high theoretical capacity, the lowest electrochemical potential, and light weight. Nevertheless, issues such as uncontrollable growth of Li dendrites, large volume changes, high chemical reactivity, and unstable solid electrolyte interphase (SEI) hinder its rapid development and practical application. Herein a stable and dendrite-free Li-metal anode is obtained by designing a flexible and freestanding MXene/COF framework for metallic Li. COF-LZU1 microspheres are distributed among the MXene film framework. Lithiophilic COF-LZU1 microspheres as nucleation seeds can promote uniform Li nucleation by homogenizing the Li + flux and lowering the nucleation barrier, finally resulting in dense and dendrite-free Li deposition. Under the regulation of the COF-LZU1 seeds, the Coulombic efficiency of the MXene/COF-LZU1 framework and electrochemical stability of corresponding symmetric cells are obviously enhanced. Li-S full cells with the modified Li-metal anode and sulfurized polyacrylonitrile (S@PAN) cathode also exhibited a superior electrochemical performance.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
InfoMat
·
2019
·Vol. 2
·期 2
·379-388
·
IF 0
Yu-Xing Yao,Xue-Qiang Zhang,Bo-Quan Li,Chong Yan,Peng-Yu Chen,Jia-Qi Huang,Qiang Zhang
Lithium-sulfur (Li-S) batteries are one of the most promising candidates for high energy density rechargeable batteries beyond current Li-ion batteries. However, severe corrosion of Li metal anode and low Coulombic efficiency (CE) induced by the unremitting shuttle of Li polysulfides immensely hinder the practical applications of Li-S batteries. Herein, a compact inorganic layer (CIL) formed by ex situ reactions between Li anode and ionic liquid emerged as an effective strategy to block Li polysulfides and suppress shuttle effect. A CE of 96.7% was achieved in Li-S batteries with CIL protected Li anode in contrast to 82.4% for bare Li anode while no lithium nitrate was employed. Furthermore, the corrosion of Li during cycling was effectively inhibited. While applied to working batteries, 80.6% of the initial capacity after 100 cycles was retained in Li-S batteries with CIL-protected ultrathin (33 μm) Li anode compared with 58.5% for bare Li anode, further demonstrating the potential of this strategy for practical applications. This study presents a feasible interfacial regulation strategy to protect Li anode with the presence of Li polysulfides and opens avenues for Li anode protection in Li-S batteries under practical conditions.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
Energy Storage Materials
·
2021
·
IF 17.789
Pan Xu,Xinyu Hu,Xiaoyu Liu,Xiaodong Lin,Xiaoxiang Fan,Xueyang Cui,Cui Sun,Qihui Wu,Xiaobing Lian,Ruming Yuan,Mingsen Zheng,Quanfeng Dong
ABSTRACT Lithium dendrites, “dead lithium”, infinite volume change and fragile solid electrolyte interphase (SEI) appear indefinitely during Li plating/stripping process, which severely resist the practical application of lithium metal batteries (LMBs). Herein, by a functionalized framework, a phosphorized copper mesh as support skeleton, the lithium plating/stripping has been gridded into zoning effect, thus a desired lithium anode with excellent performance and practical application significance can be achieved. The framework-based lithium anode showed multi-functions with many advantages: enhancing lithium affinity, mitigating volume expansion, improving the current distributions, and inducing uniform deposition of Li + . Thus, a highly reversible and dendrite-free lithium anode under large capacity could be successfully realized, which has been verified by operando optical dynamic test and COMSOL simulation. As expected, symmetric-cell displays low overpotential (~210 mV) at ultra-high current density of 20 mA cm −2 and long lifespan (>1600 h) at ultra-high areal capacity of 50 mAh cm −2 , moreover, full-cell delivers high cycling stability (2 C, 500 cycles) and outstanding rate performance with a lower polarization.
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
·
2022
·
IF 9.794
Chen Chang,Chengyin Yang,Qiyue Wu,Xuyang Wang,Hui Nie,Xingping Zhou,Xiaolin Xie,Bingjoe Hwang,Yunsheng Ye
Designing an optimum separator configuration that can address severe lithium polysulfide (LiPS) shuttling and uncontrollable Li dendrite growth at the evaluated temperature is imperative for developing a high-performance, reliable, and safe Li–S battery (LSB). Herein, a promising LSB separator design is proposed, which consists of LiPS catalytic layer (LCL) and thermal conductive layer (TCL) fabricated by dual side filtrating the flower-like vanadium pentoxide (V 2 O 5 ) microspheres and aluminum oxide (Al 2 O 3 ) nanosheets , respectively. The LCL between the separator and S-cathode as combined LiPS trapper and catalyst significantly improves the redox reaction and sulfur utilization. At the anode/separator interface, the TCL uniforms Li-ion flux and thermal distribution to prevent undesirable Li dendrite growth under the temperature gradient ( TG ) effect. The Janus-type LCL-TCL separator with two parallel functions can achieve synchronous improvements in cathodic and anodic performance in LSB. Consequently, the LSB with Janus-type LCL-TCL separator exhibits excellent cycling stability with an ultralow capacity decay rate of 0.036% per cycle over 2000 cycles at 1C and superior rate capability up to 4C. The novel strategy can pave a new way to simultaneously tackle the limitations faced by anode and cathode in LSB.
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
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 45
·24258-24268
·
IF 14.511
Shuo Wang,Haiting Shi,Yuanhua Xia,Dong Liu,Chunying Min,Ming Zeng,Sirui Liang,Ruiqi Shao,Xiaoqing Wu,Zhiwei Xu
A bottleneck limiting the practical application of lithium metal anodes is the uncontrolled growth of lithium dendrites caused by gradient distributed Li+ from separators to collectors. Herein, 3D-printed frameworks with a gradient distributed heterojunction and fast Li+ conductivity interfaces are developed to regulate the Li+ distribution and the direction of dendrite growth. More importantly, the effect of different Li+ concentration gradient frameworks on Li+ deposition behavior was analyzed in detail. Synchrotron X-ray tomography demonstrates that macropores dominate the framework, which effectively suppresses the volume change caused by lithium deposition. DFT calculations confirm the high lithiophilicity of γ-Al2O3 and the graphene heterojunction. Synchrotron radiation-based soft X-ray absorption spectroscopy illustrates the fast Li+ conductivity Li–Al–O interface resulting from the shortened Al–O bond distance. Benefiting from the higher Li+ concentration differences during the dissolution process and Li–Al–O interfaces, the gradient framework can achieve a high rate performance of ∼40 mV overpotential at 10 mA cm−2 and long cycle stability of ∼1500 h at 1 mA cm−2.
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
·
2023
·
IF 9.5
Guoqiang Zhao,Changwei Luo,Bin Wu,Mengyang Zhang,Haoqi Wang,Qingsong Hua
Unexpected interface resistance and lithium dendrite puncture hinder the application of garnet-type solid-state electrolytes in high-energy-density systems. Different from the previous high-temperature (>180 °C) molten lithium that promotes the alloying reaction between the coating layer and Li to enhance the interface contact, herein, we introduce liquid-metal-like SbCl3 to construct a three-dimensional Li+ directional-selection interlayer by in situ low-temperature lithiation (80 °C). An interlayer with a more negative interface energy composed of SbLi3 and LiCl exhibits a superior affinity with Li and LGLZO, which reduces the interface resistance and suppresses the growth of Li dendrites by an insulated electron. The introduction of the SbCl3 modification layer into Li/Li symmetric cells enables charge/discharge at a current density of 6.0 mA cm–2 and operation for more than 1000 h under 2.0 mA cm–2 at room temperature. The full cells with the LiFePO4 cathode exhibit a high residual capacity of 144.8 mAh g–1 at 0.5 C after 1000 cycles and excellent cycling stability with a retention ratio of 94.7% at 1 C after 600 cycles. The low-temperature lithiation method based on an energy-saving perspective should be applied to other types of solid-state electrolyte modification strategies.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2023
·Vol. 19
·期 23
·2300106
·
IF 13.3
Ziqin Liu,Xin Dong,Jing Wen,Pu Hu,Chaoqun Shang
The high reactivity of Li metal and the inhomogeneous Li deposition leads to the formation of Li dendrites and “dead” Li, which impedes the performance of Li metal batteries (LMBs) with high energy density. The regulating and guiding the Li dendrite nucleation is a desirable tactic to realize concentrated distribution of Li dendrites instead of completely inhibiting dendrite formation. Here, a Fe-Co-based Prussian blue analog with hollow and open framework (H-PBA) is employed to modify the commercial polypropylene separator (PP@H-PBA). This functional PP@H-PBA can guide the lithium dendrite growth to form uniform lithium deposition and activate the inactive Li. In details, the H-PBA with macroporous structure and open framework can induce the growth of lithium dendrites via space confinement, while the positive Fe/Co-sites lowered by polar cyanide (−CN) of PBA can reactivate the inactive Li. Thus, the Li|PP@H-PBA|Li symmetric cells exhibit long-term stability at 1 mA cm −2 for 1 mAh cm −2 over 500 h. And the Li-S batteries with PP@H-PBA deliver favorable cycling performance at 500 mA g −1 for 200 cycles.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
Energy Storage Materials
·
2022
·
IF 20.831
Peng Du,Xinming Fan,Bao Zhang,Liang Cao,Jiancan Ren,Xing Ou,Xueyi Guo,Qi Liu
The extensive use of electric vehicles has raised the requirement of fast-charging for lithium-ion batteries. However, conventional graphite anode suffers from lithium dendrites and unacceptable capacity fade during fast charging. The limited ion channels and lithiophobic nature hinder the application of graphite in fast charging. Besides, the formation and accumulation of “dead lithium” accelerate the capacity decay during long-term cycling at high current density . Here, lithiophilic hard carbon-riveted graphite (HCRG) anode is delicately designed and fabricated to overcome the influence of “dead lithium” and meet the requirement of fast charging. The riveted heterostructure plays a crucial role in the lithiophobic-to-lithiophilic transition of graphite surface and the lithiophilic surface of HCRG can attract more Li-ions and facilitate re-intercalation of Li-ions into graphite bulk in relaxation time at low potential rather than plating on the surface, which effectively decreases the polarization and increases the proportion of reversible lithium at high current density. As a result, it exhibits excellent rate performance with 98.2% capacity retention when rate increasesing from 1 C to 15 C and fast-charging performance with 90.1% energy retention after 4000 cycles at an ultrahigh rate of 10 C in LiFePO 4 /HCRG full-cell. This strategy of constructing riveted heterostructure efficiently boosts the lithium intercalation reaction. It achieves fast-charging performance, highlighting the comprehensive understanding of interfacial kinetics and structure optimization for other fast-charging anodes.
研究领域:
储能
·
材料科学
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
Nature Communications
·
2018
·Vol. 9
·期 1
·1-11
·
IF 12.353
Zhang Huimin,Liao Xiaobin,Guan Yuepeng,Xiang Yu,Li Meng,Zhang Wenfeng,Zhu Xiayu,Ming Hai,Lu Lin,Qiu Jingyi,Huang Yaqin,Cao Gaoping,Yang Yusheng,Mai Liqiang,Zhao Yan,Zhang Hao
The long-standing issue of lithium dendrite growth during repeated deposition or dissolution processes hinders the practical use of lithium-metal anodes for high-energy density batteries. Here, we demonstrate a promising lithiophilic–lithiophobic gradient interfacial layer strategy in which the bottom lithiophilic zinc oxide/carbon nanotube sublayer tightly anchors the whole layer onto the lithium foil, facilitating the formation of a stable solid electrolyte interphase, and prevents the formation of an intermediate mossy lithium corrosion layer. Together with the top lithiophobic carbon nanotube sublayer, this gradient interfacial layer can effectively suppress dendrite growth and ensure ultralong-term stable lithium stripping/plating. This strategy is further demonstrated to provide substantially improved cycle performance in copper current collector, 10 cm 2 pouch cell and lithium–sulfur batteries, which, coupled with a simple fabrication process and wide applicability in various materials for lithium-metal protection, makes the lithiophilic–lithiophobic gradient interfacial layer a favored strategy for next-generation 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
Advanced Science
·
2022
·Vol. 9
·期 11
·2104841
·
IF 17.521
Shulan Mao,Zeyu Shen,Weidong Zhang,Qian Wu,Zhuoya Wang,Yingying Lu
The energy density of batteries with lithium cobalt oxide (LCO) can be maximized by increasing the cut-off voltage to approach the theoretical capacity limit. However, it is not realized in the practical applications due to the restricted cycle life caused by vulnerable cathode surface in deep delithiation state, where severe side reactions, oxygen/cobalt loss and structure degradation often happen. Here, an outside-in oriented nanostructure on LiCoO 2 crystals is fabricated. The outer electrochemically stable LiF and Li 2 CoTi 3 O 8 particles perform as physical barrier to prevent damage of both cathodes and electrolytes, while the inner F doping promote Li ions diffusivity and stabilize the lattice oxygen. With the spinel-like transition layer between them, a solid and complete lithium-ion transport channel generation along the lithium concentration gradient. Under the protection from this structure, the LiCoO 2 withstand the high voltage of 4.6 V and the LCO/graphite pouch full cell with high loading density exhibits 81.52% energy density retention after 135 cycles at 4.5 V.
研究领域:
材料科学
·
储能
·
电化学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Kaixin Zhao,Qi Jin,Liyuan Zhang,Lu Li,Lili Wu,Xitian Zhang
Lithium–Sulfur (Li‒S) battery is regarded as the most promising next-generation energy storage system due to their low cost and high theoretical energy density. However, the formation of dendritic morphology of Li makes the side reactions between Li metal anode and lithium polysulfides (LiPSs) more serious, leading to the depletion active materials and short lifespan of batteries , which becomes a bottle neck of their practical application. Herein, a LiF-rich Li deposition regulating layer (LDRL) is developed to protect the Li anode in Li‒S battery. The LiF-rich LDRL can effectively regulate the deposition morphology of Li, thus decreases the corrosion of the LiPSs to the Li anode. A symmetrical cell with LDRL can stably cycle for more than 700 h at a current density of 1 mA cm −2 . The Li‒S batteries using Li anodes with a LDRL presents better cycling stability (760 mAh g −1 after 100 cycles at 0.1 C) compared with the batteries using the bare Li anodes. This work provides a new idea for protecting Li anode in Li‒S battery.
研究领域:
储能系统
·
电池技术
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHEMISTRY COMMUNICATIONS
·
2024
·
IF 4.7
Ying Sun,Jingjing Zhang,Tao Huang,Aishui Yu
The active lithium ions loss during the initial charge and discharge process of lithium ion batteries seriously hampers its increasement of energy density. Pre-lithiation, involving the pre-storage of active lithium ions prior to cycling, emerges as a promising and effective strategy to offset this loss. Li 6 CoO 4 has been identified as a candidate capable of releasing adequate lithium ions to compensate for such loss. However, its poor air stability renders it susceptible to side reactions in the atmosphere, leading to the formation of residual lithium and consequently affecting its electrochemical performance. In this study, we propose application of a lithium aluminate (LiAlO 2 ) coated onto the surface of lithium cobalt oxide (Li 6 CoO 4 ) to mitigate the presence of residual lithium. Meanwhile, with decreasing of residual lithium, the rate capability is also enhanced. The research results demonstrate that samples treated with this coating layer exhibit an enhanced energy density in the full cell, indicating the efficacy of this approach in optimizing the electrochemical performance of prelithiation additives.
研究领域:
材料科学
·
能源工程
✓ 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）