CHINESE CHEMICAL LETTERS
·
2021
·Vol. 33
·期 10
·4635-4639
·
IF 6.779
Shuai Chen,Chuang Yu,Shaoqing Chen,Linfeng Peng,Cong Liao,Chaochao Wei,Zhongkai Wu,Shijie Cheng,Jia Xie
Solid-state batteries with high energy density and safety are promising next-generation battery systems. However, lithium oxide and lithium sulfide electrolytes suffer low ionic conductivity and poor electrochemical stability, respectively. Lithium halide solid electrolyte shows high conductivity and good compatibility with the pristine high-voltage cathode but limited applications due to the high price of rare metal. Zr-based lithium halides with low cost and high stability possess great potential. Herein, a small amount of In 3+ is introduced in Li 2 ZrCl 6 to synthesize Li 2.25 Zr 0.75 In 0.25 Cl 6 electrolytes with a high room temperature Li-ion conductivity of 1.08 mS/cm. Solid-state batteries using Li 2.25 Zr 0.75 In 0.25 Cl 6 /Li 5.5 PS 4.5 Cl 1.5 bilayer solid electrolytes combined with Li-In anode and pristine LiNi 0.7 Mn 0.2 Co 0.1 O 2 cathode deliver high initial discharge capacities under different cut-off voltages. This work provides an effective strategy for enhancing the conductivity of Li 2 ZrCl 6 electrolytes, promoting their applications in solid-state batteries.
研究领域:
材料科学
·
电化学
·
固体离子学
·
能源存储
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无机非金属材料
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电池技术
✓ 已验证
DOI
高影响因子
IONICS
·
2020
·Vol. 26
·期 9
·4257-4265
·
IF 2.394
Jiang Huize,Han Yu,Wang Hui,Zhu Yuhao,Guo Qingpeng,Jiang Haolong,Zheng Chunman,Xie Kai
The poor interface between the active materials, solid electrolytes, and conductive additives in composite cathode materials is the key factor restricting the performance of the all-solid-state lithium-sulfur battery. Here, the composite cathode material was prepared through the method of one-step ball milling. The sulfide electrolyte Li 3 PS 4 (LPS) was formed on the surface of the active material Li 2 S while the conductive additives were incorporated, and the conductive ions and electronic network were constructed simultaneously. After adding an appropriate amount of carbon nanotubes (cnt), the composite cathode exhibited high specific capacity of 1145.2 mAh g −1 after 30 times of cycling at a current density of 0.2 mA cm −2 , and the battery with ultrahigh areal Li 2 S loading also displays high capacity of 962.6 mA g −1 . The composite cathode with high Li 2 S content (56.3%) was prepared, with excellent performance exhibited: the capacity is 741 mAh g −1 after 30 times of cycling at a current density of 0.2 mA cm −2 .
Without additional sulfide electrolyte, the composite cathode materials were prepared by one-step ball milling with lithium sulfide, phosphorus pentasulfide, acetylene black, and carbon nanotubes as raw materials.
研究领域:
材料科学
·
电化学
·
能源存储
·
固态离子学
·
纳米复合材料
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Yuanyuan Li,Jun Cheng,Jianwei Li,Zhen Zeng,Yixuan Guo,Hongqiang Zhang,Hongbin Liu,Xiao Xu,Yiwei Rao,Deping Li,Lijie Ci
Sulfide solid state electrolytes capture much attention owing to their high conductivity and decent mechanical property. Nevertheless, the moisture instability and poor interfacial compatibility against lithium metal anode remain challenging and hinder the practical application. Herein, we report a novel indium (In) doping strategy based on the hard-soft-acid-base theory to tackle these issues. Optimized Li 7 P 2.9 S 10.9 In 0.1 electrolyte exhibits a high ionic conductivity of 4.1 × 10 −3 S cm −1 and achieves an enhanced interfacial compatibility. Importantly, as In partially replaces the phosphorus (P), the amount of released hydrogen sulfide can be significantly decreased and the air stability is improved. The all-solid-state battery assembled with the Li 7 P 2.9 S 10.9 In 0.1 electrolyte demonstrates a high discharge capacity and a good cycling stability under a high current density of 1.0 C. This work provides a practical and effective method to design sulfide-based solid-state electrolyte with high ionic conductivity and enhanced air stability for all-solid-state battery applications.
研究领域:
材料科学
·
电化学
·
能源存储
·
固态离子学
·
电池技术
✓ 已验证
DOI
高影响因子
SOLID STATE IONICS
·
2016
·
IF 2.38
Shanshan Mo,Penghao Lu,Fei Ding,Zhibin Xu,Jiaquan Liu,Xingjiang Liu,Qiang Xu
Sulfide glasses with a high lithium-ion conductivity are promising solid electrolyte for all-solid-state lithium-ion batteries. In this study, 95(0.7Li 2 S–0.3P 2 S 5 )–5Li 3 PO 4 glass electrolyte is prepared by mixing 70Li 2 S-30P 2 S 5 (mol%) glass and Li 3 PO 4 crystal using mechanical milling technique. The effects on the structures and electrochemical properties of the obtained ternary sulfide glass were examined. The ternary sulfide glass shows a good electrochemical stability, which may exhibit a wide electrochemical window up to 10 V (vs. Li/Li + ). Furthermore, the 95(0.7Li 2 S-0.3P 2 S 5 )-5Li 3 PO 4 glass electrolyte displays an electrical conductivity of 2.513 × 10 − 3 S cm − 1 at 100 °C. The all-solid-state lithium-ion cell assembled with 95(0.7Li 2 S-0.3P 2 S 5 )-5Li 3 PO 4 glass electrolyte shows a favourable cyclability, which can reveal a discharge capacity of 144 mAh g − 1 at 0.05 °C and a discharge capacity of 63.9 mAh g − 1 at 0.1C after the 50th cycle at 100 °C, respectively.
研究领域:
材料科学
·
电化学
·
能源存储
·
固态离子学
·
锂电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Xin-yu Hu,Mao-xiang Jing,Hua Yang,Quan-yao Liu,Fei Chen,Wei-yong Yuan,Le Kang,Dong-hong Li,Xiang-qian Shen
Poor room-temperature ionic conductivity and lithium dendrite formation are the main issues of solid electrolytes. In this work, rod-shaped alumina incorporation and graphite coating were simultaneously applied to poly (propylene carbonate) (PPC)-based polymer solid electrolytes (Wang et al., 2018). The obtained alumina modified solid electrolyte membrane (Al-SE) achieves a high ionic conductivity of 3.48 × 10 −4 S/cm at room temperature with a wide electrochemical window of 4.6 V. The assembled NCM622/Al-SE/Li solid-state battery exhibits initial discharge capacities of 198.2 mAh/g and 177.5 mAh/g at the current density of 0.1 C and 0.5 C, with the remaining capacities of 165.8 mAh/g and 161.3 mAh/g after 100 cycles respectively. The rod-shaped structure of Al 2 O 3 provides fast transport channels for lithium ions and its Lewis acidity promotes the dissociation of lithium salts and release of free lithium ions. The lithiophilic Al 2 O 3 and Graphite form intimate contact with metallic Li and create fast Li + conductive layers of Li-Al-O layer and LiC 6 layer, thus facilitating the uniform deposition of Li and inhibiting Li dendrite formation during long-term cycling. This kind of composite Al-SE is expected to provide a promising alternative for practical application in solid electrolytes.
研究领域:
材料科学
·
电化学
·
能源存储
·
固态离子学
·
纳米复合材料
·
锂金属电池
✓ 已验证
DOI
高影响因子
IONICS
·
2016
·Vol. 23
·期 10
·2603-2611
·
IF 2.119
Chen Shaojie,Zhao Yanran,Yang Jing,Yao Lili,Xu Xiaoxiong
Three types of inorganic electrolytes [Li 10 GeP 2 S 12 (LGPS), 75Li 2 S·24P 2 S 5 ·1P 2 O 5 (LPOS), Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 (LAGP)] with different particle sizes and electrochemical properties are selected as active fillers incorporated into poly(ethylene oxide) (PEO) matrix to fabricate hybrid solid electrolytes. The optimum composition of each filler is found in consideration of ionic conductivity. Their electrochemical characteristics are investigated. The optimal conductivities are 1.60 × 10 −5 , 1.18 × 10 −5 , and 2.12 × 10 −5 S cm −1 at room temperature for PEO-1%LGPS, PEO-1%LPOS, and PEO-20%LAGP, respectively. The electrochemical stability windows of these hybrid solid electrolytes are all above 5 V (vs. Li + /Li). The results show that these fillers have positive effects on the ionic conductivity, lithium ion transference number, and electrochemical stability. The relationship between the type of filler and electrochemical properties has been investigated. All-solid-state cells LiFePO 4 /Li are fabricated and present fascinating electrochemical performance with high capacity retention and good cycling stability. This work provides promising electrolytes prepared by a simple method.
研究领域:
材料科学
·
电化学
·
能源存储
·
固态离子学
·
功能材料
·
锂电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Yanhua Zhang,Yuhang Mei,Xinglong Gao,Yumei Xiao,Zijun Tang,Xing Xiang,Jiadong Deng
The lithium dendrite problem of Li 7 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) solid electrolyte restricts the practical application and development of all-solid-state lithium batteries (ASSLBs). Herein, a LiPON interlayer with Li + conductive and electron non-conductive dynamic properties is constructed at the Li/LLZTO interface. Results show that the electronic conductivity of solid electrolyte after LiPON modification decreased by nearly three orders of magnitude, indicating that it has good ability to hinder electron conduction . The interlayer enhances the wettability between the Li metal anode and LLZTO, resulting in a decrease of battery resistance from 3400 Ω to 700 Ω. The critical current density of the ASSLBs increase from 0.1 mA cm −2 to 1.2 mA cm −2 at room temperature, and the battery cycle number increase from 31 h to over 1000 h. XPS deep etching results show that the LiPON/LLZTO interface has good electrochemical stability. The Kelvin probe force microscope displays a sharp increase in potential within the LiPON interlayer, indicating its successful hindrance of electron conduction to the solid electrolyte. The effective inhibition of lithium dendrites growth is due to LiPON can promote the Li + transmission from LLZTO solid electrolyte to Li anode, and also hinder the electron conduction to LLZTO to form lithium dendrites.
研究领域:
材料科学
·
电化学
·
能源存储
·
固态电池
·
界面工程
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Chuankai Fu,Shuaifeng Lou,Yi Cao,Yulin Ma,Chunyu Du,Pengjian Zuo,Xinqun Cheng,Weiping Tang,Yongmin Wu,Yunzhi Gao,Hua Huo,Geping Yin
Recently, rechargeable lithium metal polymer battery (LMPB) attracts increasing attention because of its high safety and energy density properties. However, the high contact interfacial resistance of solid-state electrode and electrolyte is still an obstacle to satisfy the demand of high current density and long cycle stability, especially at room and lower temperature. Here, we develop a simple and efficient heat treatment method, to improve the interfacial compatibility between electrode and electrolyte in all-solid-state LMPB, successfully realizing workable LMPB at a reduced temperature (30 °C). The LMPB shows excellent cycling performance and rate capability in the voltage range of 2.5–4.2 V. The behavior of Li + plating/stripping on the surface of lithium metal anode is greatly enhanced. Meanwhile, the interfacial resistance of the LMPB decrease significantly after the heat treatment process .
研究领域:
材料科学
·
电化学
·
能源存储
·
固态电池
·
界面工程
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Shi Wang,Qingyuan Li,Minglei Bai,Jixin He,Chongyang Liu,Zengxi Li,Xiangfeng Liu,Wen-yong Lai,Liaoyun Zhang
Lithium-ion batteries (LIBs) using solid-state electrolytes (SSEs) can improve safety and energy density comparable with the liquid electrolytes (LE)-based counterparts. Especially, employing garnet-type SSEs to prepare solid-state LIBs are promising to achieve high-energy cells. However, the unbending and brittle issues of the inorganic SSE films are not suitable to fabricate flexible and stretchable energy storage devices. Here, We find that introducing specific polymer (30 wt%) into Li 6.75 La 3 Zr 1.75 Ta 0.25 O 12 (LLZTO) can strongly increase the strength of the composite polymer-in-inorganic electrolyte (CIE) film. Both in-situ and ex-situ characterizations demonstrate that CIE delivers an excellent ability to suppress the growth of Li dendrites due to the close packing of LLZTO and effective filled grain boundaries and voids inside the CIE film by the polymer. The CIE inherits impressive electrochemical performance from LLZTO. As a result, the assembled LiFePO 4 (LFP)/CIE/Li cell delivers better cell performance than LFP/LE-separator/Li cell at ambient temperature (AT). The assembled high-voltage cathode (Li 1.2 Mn 0.6 Ni 0.2 O 2 , 4.8 V)/CIE/Li cell also displays an excellent cell performance at AT. The present study offers new insights into exploring of flexible polymer-in-ceramic electrolytes for high-voltage LIBs with improved safety and energy density .
研究领域:
材料科学
·
电化学
·
能源存储
·
固态电池
·
纳米复合材料
·
界面工程
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Wei Feng,Huirong Liu,Mingliang Zhao,Jianling Li,Feiyu Kang
The poly(ethylene oxide) based composite solid electrolyte(PEO-CSE) is an effective solution for developing high-performance solid-state lithium battery . However, the poly(ethlene oxide)(PEO) based solid-state lithium battery using 4.0 V cathode suffers from severe interfacial instability problems. In this work, we add additive lithium difluorophosphate(LiPO 2 F 2 ) into the PEO-CSE to form a stable and low resistance interphase at the cathode/electrolyte interface during charge/discharge process. The electrochemical stability window of PEO-CSE increases to ∼5.0 V. Besides, the electrochemical performance of PEO based solid-state lithium battery with LiCoO 2 as cathode is excellent. The discharge capacity of LiCoO 2 /Li cell with LiPO 2 F 2 reaches 108.5 mAh g −1 at 1.0C. In contrast, the discharge capacity that without LiPO 2 F 2 is only 60.0 mAh g −1 . Meanwhile, the PEO-CSE with LiPO 2 F 2 cell delivers stable cycle performance at 4.2 V. The capacity retention maintains 88.5% compared with 16.1%(without LiPO 2 F 2 ) after 100 cycles. Furthermore, it's still maintains 83.3% after 150 cycles. In addition, the cathode/electrolyte interface is analyzed by transmission electron microscope(TEM) and X-ray photoelectron spectroscopy(XPS). Galvanostatic intermittent titration test(GITT) is used to analyze the dynamic diffusion performance. This strategy provides a simple and effective way to improve the high voltage stability of the cathode/electrolyte interface.
研究领域:
电化学
·
材料科学
·
能源存储
·
固态电池
·
界面工程
✓ 已验证
DOI
高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
·
2019
·
IF 2.6
Ang Qiao,Haizheng Tao,Yuanzheng Yue
Amorphous conductors with high ionic conductivity are a promising candidate as electrolytes in all-solid state batteries. In this work, we prepared amorphous Ag 3 PS 4 conductor via a chemo-mechanical milling process, and then characterized its structure and electrochemical properties . The results show that Ag + conductivity of the amorphous Ag 3 PS 4 was remarkably enhanced by three orders of magnitude compared to its crystalline counterpart. Furthermore, the amorphous sample exhibits lower activation energy ( E a ) for ionic conductivity as a function of temperature. Structural characterizations indicate that the tetrahedral [PS 4 ] units were retained in amorphous Ag 3 PS 4 , but the Ag + ions became more liberated than those in the crystalline state, leading to the enhanced migration of Ag + ions, thereby, the ionic conductivity in amorphous Ag 3 PS 4 is drastically increased. This work provides insight into the crucial role of the disorder in raising the ionic conductivity of amorphized chalcogenide materials containing mobile ions.
研究领域:
材料科学
·
固体化学
·
能源材料
·
电化学
·
无机非金属材料
·
固态电池
·
离子传导
✓ 已验证
DOI
高影响因子
IONICS
·
2020
·Vol. 26
·期 9
·4239-4246
·
IF 2.394
Zhang Yi,Feng Wei,Zhen Yichao,Zhao Peiyao,Wang Xiaohui,Li Longtu
Li 7 La 3 Zr 2 O 12 (LLZO) with cubic phase structure is a kind of lithium-ion-conducting nanoparticles. According to the previous studies, incorporation of c-LLZO can improve electrochemical properties of PEO-based composite polymer electrolytes (CPEs). Therefore, in our study, we synthesized a kind of room-temperature-stable cubic phase LLZAO (Li 6.25 La 3 Zr 2 Al 0.25 O 12 ) nanofibers, and we aimed to confirm the optimal content of LLZAO nanofibers in PEO-based CPEs. With the incorporating 10 wt% LLZAO nanofibers, ionic conductivity of CPEs are 9.87×10 −5 S cm −1 at 30 °C and 8.66×10 −4 S cm −1 at 60 °C. The Li/CPE incorporating 10 wt% LLZAO nanofibers/Li symmetric cell exhibits little voltage fluctuation in 1000 cycles under a current density of 0.5 mA cm −2 , demonstrating better cycling stability with long cycle life. The LiFePO 4 /CPE incorporating 10 wt% LLZAO nanofibers/Li cell has a high initial discharge-specific capacity of 155.6 mAh g −1 under 0.1 C rate at 60 °C and remains 94.5% of capacity after 100 cycles. This cell also has great cycling performance under 0.2 C and 0.5 C rate, indicating good rate performance. Our work indicates that incorporation of LLZAO nanofibers enhances electrochemical properties and cycling stability of PEO-based all-solid-state lithium-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
固态电池
·
高分子材料
·
纳米材料
·
电化学能量转换
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）