ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Miao Jiang,Wentong Fan,Gaozhan Liu,Wei Weng,Liangting Cai,Xiayin Yao
Increasing active material content is critical to realize high energy density for all-solid-state lithium batteries (ASSLBs), which is generally impeded by limited ionic/electronic conductions in cathode layer. Herein, one-dimensional NiS-CNT@Li 7 P 3 S 11 nanocomposites are synthesized by wet chemistry method and possess high mixed ionic/electronic conductivities. When employed as additives for LiCoO 2 , the NiS-CNT@Li 7 P 3 S 11 nanocomposites can efficiently improve the electrochemical performances of LiCoO 2 cathode in the ASSLBs. Specifically, the resultant Li/75%Li 2 S-24%P 2 S 5 -1%P 2 O 5 /Li 10 GeP 2 S 12 /LiCoO 2 -5%NiS-CNT@Li 7 P 3 S 11 ASSLBs with 70 wt% LiCoO 2 content deliver a reversible capacity of 114.3 mAh g −1 after 50 cycles under 0.1 C and 99.6 mAh g −1 at 0.5 C after 100 cycles at room temperature . Even if the active material LiCoO 2 content increases to 80%, a high reversible discharge capacity of 124 mAh g −1 can be achieved at 0.05 C after 25 cycles. Obviously, the excellent electrochemical performances are attributed to the improved ionic/electronic conductivities with assistance of NiS-CNT@Li 7 P 3 S 11 . This work provides an efficient strategy to design cathode materials with high ionic/electronic conductivities and paves the way for the practical application of ASSLBs.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Hongjiao Wang,Wenzhi Li,Lilin Wu,Bai Xue,Fang Wang,Zhongkuan Luo,Xianghua Zhang,Ping Fan,Laurent Calvez,Bo Fan
The solid/liquid Li-S battery shows promise in solving both the polysulfide “shuttle effect” in liquid batteries and the interfacial contact in all-solid-state batteries. However, increasing the interfacial stability of the electrolyte and the solid electrolyte remains a challenge in the solid/liquid batteries. In this work, a high ionic conductivity Li 3 PS 4 solution is synthesized using a nano-Li 2 S precursor, which is then utilized to form a solid electrolyte Li 3 PS 4 @Li 7 P 3 S 11 via dip-coating. The Li 3 PS 4 @Li 7 P 3 S 11 can form a dense protective interface Li 3 PS 4 -DME with the DOL/DME and DME electrolyte. This interface can prevent direct contact between the solid electrolyte and the electrolytes, efficiently inhibiting further solid electrolyte decomposition. The lithium symmetric battery with the solid electrolyte Li 3 PS 4 @Li 7 P 3 S 11 is cycled stably for 1000 h, at a current density of 0.38 mA cm −2 and a capacity of 1.51 mA h cm −2 . The Li-S battery with the solid electrolyte Li 3 PS 4 @Li 7 P 3 S 11 can cycle stably for 300 cycles at 0.2C with a capacity of 600 mA h g −1 remaining.
研究领域:
材料科学
·
电化学
·
能量存储
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2024
·
IF 5.4
Ruru Meng,Jinghua Wu,Mengting Zhu,Mingyuan Chang,Nini Zhang,Panlei Cao,Fuli Tian,Xiayin Yao
All-solid-state lithium batteries (ASSLBs) are one of the most promising next-generation energy storage devices due to their superior safety. Nonetheless, one of the primary challenges confronting current solid-state battery designs is the contact failure associated with electrode volume expansion, which causes an increasing interface impedance and ultimately battery failure. Herein, we are dedicated to addressing the issue of volume expansion in the composite cathode during charging and discharging as well as to preventing the separation of electrodes and electrolyte. To achieve this, a two-dimensional MoS2 NS@Li7P3S11 composite cathode was fabricated through a chemical exfoliation process, followed by the in situ deposition of a Li7P3S11 electrolyte. The ultrathin nature of the MoS2 nanosheets effectively counteracts volume expansion during cycling. Concurrently, the in situ formation of the electrolyte layer precludes separation of the electrode and electrolyte components. In addition, the introduction of the metallic 1T phase obviously enhances the electronic conductivity, approximately 2 orders of magnitude higher than bulk MoS2. As a result, ASSLBs equipped with the MoS2 NS@Li7P3S11 cathode demonstrate superior structural stability along with high reversible capacity and outstanding cyclic durability.
研究领域:
材料科学
·
能源存储
·
电池技术
·
固态电化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Jiamin Shi,Gaozhan Liu,Wei Weng,Liangting Cai,Qiang Zhang,Jinghua Wu,Xiaoxiong Xu,Xiayin Yao
Poor solid–solid contact between an electrode and solid electrolyte is a great challenge for all-solid-state lithium batteries (ASSLBs) which results in limited ion transport and eventually leads to rapid capacity fading. Two-dimensional (2D) materials have incomparable advantage in the construction of the desired interface because of their flat surface and large specific surface area. In order to realize intimate interfacial contact and superior ion transport, monodisperse 2D Co3S4 hexagonal platelets as cathodes for all ASSLBs are synthesized through a series of topological reactions followed with in situ coating of tiny Li7P3S11 using a liquid-phase method. The unique 2D hexagonal platelets are favorable for in situ solid electrolyte coating. Moreover, the well-designed interfacial structure can make the electrode materials contact with solid electrolytes more closely, contributing to a remarkable improvement on electrochemical performance. ASSLBs employing the Co3S4@Li7P3S11 composite platelets as a cathode deliver a large reversible capacity of 685.9 mA h g–1 at 0.5 A g–1 for 50 cycles. Even at a high current density of 1 A g–1, the Co3S4@Li7P3S11 composite cathode still exhibits a high capacity of 457.3 mA h g–1 after 100 cycles. This work provides a simple strategy to design the composite electrode with intimate contact and superior ion transport via morphology controlling.
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
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Ruifeng Song,Ruonan Xu,Zhenyu Wang,Meng Yang,Xinlin Yan,Chuang Yu,Long Zhang
Controlling parasitic interface reactions and the Li dendrite growth remains challenging for all-solid-state (ASS) Li batteries, though the progress in Li-ion transport of solid electrolytes (SEs). Herein, ZnO and ZrO 2 oxides are used as dopants to synthesize Li 7 P 3 S 11 (LPS) glass SEs through mechanochemical synthesis . The oxide doping not only improves the ionic conductivity and air stability of LPS SEs, but more importantly also enhances the chemical stability in the interface of Li|SE as well as the Li dendrite suppression capability. Combining FIB milling with SEM-EDS detection, transversal Li dendrite deposition and growth are disclosed to occur inside the interface layer. The ASS battery using the oxide-doped LPS SE and metallic Li anode significantly outperforms that with the O-free LPS, demonstrating the merits of oxide doping toward advancing sulfide SEs.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2018
·Vol. 102
·期 6
·3402-3410
·
IF 2.956
Bai Xue,Bo Fan,Bin Li,Lu Chen,Fang Wang,Zhongkuan Luo,Xianghua Zhang,Hongli Ma
Solvent-assisted ball milling is used to prepare the sulfide solid electrolyte Li 7 P 3 S 11 . Comparing with dry ball milling and simple liquid phase synthesis, solvent-assisted ball milling can significantly promote the reaction of the starting materials from tens of hours to only several hours. When using dimethoxyethane as the assistant solvent, relatively pure Li 7 P 3 S 11 with ionic conductivity of 1.0 × 10 −4 S/cm can be synthesized after 8-hour ball milling with following 2-hour 180°C vacuum drying and 4-hour 230°C heat treatment. It is revealed that the transition from the precursor to Li 7 P 3 S 11 is a two-step process, with an intermediate composed of a thio-LISICON III analogous phase and an amorphous phase. This work not only provides a synthesis route of Li 7 P 3 S 11 which reduces synthesis duration, but also offers an instructive insight into the phase evolution in solvent-based synthesis process of sulfide solid electrolytes.
研究领域:
材料科学
·
固态化学
·
储能技术
·
电池材料
✓ 已验证
DOI
高影响因子
SOLID STATE IONICS
·
2019
·
IF 2.886
Bo Fan,Quanfeng Zhang,Zhongkuan Luo,Xianghua Zhang,Hongli Ma,Ping Fan,Bai Xue
Delicate control of the precipitate/supernatant ratio in the precursor suspension during liquid-phase synthesis of Li 7 P 3 S 11 provides information on how the morphology of the impurities affects the ionic conductivity . In this work, the influence of the precipitate/supernatant ratio on the phase structure, the morphology and the ionic conductivity of Li 7 P 3 S 11 prepared in acetonitrile is studied. It is revealed that in the supernatant-excess region, the excess amorphous “Li 2 S·P 2 S 5 ” finally turns into a poorly ionic conductive phase Li 4 P 2 S 6 which wraps Li 7 P 3 S 11 particles, increasing the interfacial resistance . In the precipitate-excess region, a thio-LISICON III phase turned from the excess precipitate tends to stay within Li 7 P 3 S 11 particles, and therefore its negative influence on the total ionic conductivity is not evident. Consequently, a slight composition shift into the precipitate-excess region benefits the ionic conductivity of the resultant solid electrolyte .
研究领域:
材料科学
·
固态化学
·
储能
·
电化学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Bing Zhao,Juan Wu,Zhixuan Wang,Wencheng Ma,Yaru Shi,Yong Jiang,Jinlong Jiang,Xiaoyu Liu,Yi Xu,Jiujun Zhang
Li 7 P 3 S 11 glass-ceramic is considered as a superionic conductor electrolyte with great application prospect, but its realization is limited due to an unstable interface against lithium metal. Incorporation of lithium halides in electrolyte promotes enhancement in ionic conductivity and helps inhibit lithium dendrite growth. However, the mechanistic impact of halide incorporation is still not been fully explained. In this work, the effects of halogen introduction into Li 7 P 3 S 11 glass-ceramic to the ion conductivity, critical current density and interfacial stability of solid electrolyte interphase (SEI) is studied. It shows that the LiBr-incorporated Li 7 P 3 S 11 obtains the most obviously increased critical current density. Structural characterizations indicate that the LiBr does not enter the lattice, but rather exists in the lattice gap of Li 7 P 3 S 11 . However, the highly electronegative Br decreases the electron cloud density on the surface of P 2 S 7 4− and PS 4 3− units, reduces their binding to Li + and thus increases the ion conductivity. Density functional theory evaluations show that the addition of LiBr can increase the interface energy of SEI to Li, which is beneficial to suppress the growth of lithium dendrite. Therefore, the Li/80Li 7 P 3 S 11 •20LiBr/Li cell presents a double increase of the critical current density (0.968 mA/cm 2 ) and circulates stably at 0.5 mA/cm 2 at room temperature.
研究领域:
材料科学
·
电化学
·
固态离子学
·
能源材料
·
锂电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2019
·Vol. 23
·期 11
·3145-3151
·
IF 2.531
Xu Xiaoyan,Cheng Jun,Li Yuanyuan,Nie Xiangkun,Dai Linna,Ci Lijie
As high energy density and enhanced safety are required for the lithium-ion battery development, all-solid-state battery has attracted significant attention. Herein, we report an all-solid-state full battery consisting of a Li 7 P 3 S 11 solid electrolyte coated silicon anode, Li 2 S/graphene composite cathode, and Li 7 P 3 S 11 solid-state electrolyte. With a high capacity for the silicon anode and Li 2 S cathode, this battery yields a high theoretical specific energy density up to 1495 Wh kg −1 , which is higher than that of lithium-ion batteries based on oxide cathodes. Moreover, Li 2 S cathode is used as lithium source instead of using metallic lithium, avoiding interface reaction between lithium metal anode and sulfide electrolyte Li 7 P 3 S 11 . This all-solid-state battery system we proposed could avoid the safety issues associated with the use of lithium metal and be a promising candidate for an enhanced energy density, which would promote their applications in the fields of electric vehicles and portable electronics.
研究领域:
材料科学
·
储能
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Nan Zhang,Fei Ding,Shihui Yu,Kongying Zhu,Huan Li,Weiguo Zhang,Xingjiang Liu,Qiang Xu
Owing to the expanding function of Li-ion transmission channels, it is important to explore the doping effects of different compounds into sulfide solid electrolytes to improve their electrochemical performances. However, it is hard to characterize the doping behaviors within sulfide solid electrolytes with low crystallinity and poor stability just by conventional crystallography analytical methods. In this work, the dielectric spectrum testing combined with other analytical methods, such as 7Li solid-state nuclear magnetic resonance, X-ray photoelectron spectroscopy, and the electrochemical method, have been applied to investigate the dual-doping behaviors of WS2 and LiBr within Li7P3S11 glass-ceramic electrolytes. This research method can not only evaluate the internal acting effect between the skeleton of sulfide solid electrolytes and the migrating kinetics of Li ions but also explore the capacitance at the interfaces of LiCoO2/sulfide solid electrolytes. The experimental results show that the number of Li ions with fast transport velocity within Li2S-P2S5-based solid electrolytes has been increased. Meanwhile, the interfacial capacitances between Li2S-P2S5-based solid electrolytes and the LiCoO2 cathode have decreased after dual-doping of WS2 and LiBr, indicating a synergetic effect for the doped Li7P3S11 glass-ceramic electrolytes in terms of the ionic conductivities and interfacial compatibilities. This work may provide a novel analytical approach to explore both the diffusion kinetics and interfacial behaviors for the solid electrolytes of lithium batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yuhua Zhen,Xinyu Cai,Wenjie Yang,Yuanyue Qie,Jiahao Li,Gaohui Ren,Wei Xing,Qingzhong Xue,Hongxia Geng
Sulfide solid electrolytes (SSEs) are promising materials for developing safe and high-performance all-solid-state lithium batteries (ASSLBs). However, enhancing the ionic conductivity, air stability, and electrolyte/electrode interface compatibility of vulcanized solid electrolytes simultaneously remains a significant challenge. Here, we propose a dual doping strategy (In 2 S 3 and LiI) based on liquid-phase method for the preparation of SSEs. In 2 S 3 and LiI can widen the Li + diffusion pathways and enhance the ionic conductivity. Meanwhile, In 2 S 3 can enhance the (electro)chemical stability and suppress the formation of lithium dendrites and H 2 S. Consequently, the prepared Li 7 P 2.94 In 0.1 S 10.9375 I 0.125 (LPInSI) solid electrolyte exhibited high ionic conductivity (2 mS·cm −1 ), excellent electrochemical stability, and air stability at 25 ℃. Based on this, ASSLBs fabricated with Li-In alloy anodes enhance the compatibility of the electrolyte/electrode interface, deliver a discharge capacity of 165.2 mAh·g −1 at room temperature, and retain 87.6 % of the specific discharge capacity after 300 cycles at 0.2 C. This study offers a viable approach for the synthesis of practical SSEs and high-performance ASSLBs.
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Majed Y.A. Almashnowi
All-solid-state Li-batteries have become viable options for energy storage materials over-commercialized Li-ion batteries due to their safety, wider electrochemical stability window, and impressive energy density. All-solid-state Li-based batteries use sulfide-based electrodes with high theoretical specific capacity and ionic conductivity, whereas solid electrolytes have recently shown improved energy density. However, using Li-based batteries in all-solid-state batteries for practical purposes is still a great challenge because of their interfacial issues among the solid electrolytes and electrodes. To elucidate these interfacial issues, this study presents an in-situ liquid-phase approach to prepare CoS 2 @Li 7 P 3 S 11 as the electrode for all-solid-state Li-batteries by coating Li 7 P 3 S 11 solid electrolyte on cobalt disulfide nanoparticles. Originating from enhanced intimate contact and improved area of contact in the solid electrolyte of sulfide and active material, the synthesized CoS 2 @Li 7 P 3 S 11 nanocomposites employed as a cathode in all-solid-state Li-battery, which shows the ultrahigh cyclic stability and reversible capacity. All-solid-state Li-based batteries consist of CoS 2 @Li 7 P 3 S 11 nanocomposites, Super P, neat Li 7 P 3 S 11 as cathode material, and Li metal as an anode electrode material ( Li-75 %Li 2 S-24 %P 2 S 5 -1 %P 2 O 5 /Li 7 P 3 S 11 /CoS 2 @Li 7 P 3 S 11 /Li). At low (100 mA/g) and high (1000 mA/g) current density, exhibits an 1112.6 mAh/g reversible discharge capacity after 30 cycles and 208.4 mAh/g after 200 cycles, respectively.
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
危险品化学品经营许可证（带存储）