ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Xiaoyu Jiang,Ziqi Zeng,Lifen Xiao,Xinping Ai,Hanxi Yang,Yuliang Cao
Development of intrinsically safe and long lifespan sodium-ion batteries (SIBs) is urgently needed for large-scale energy storage applications. However, most of the currently developed SIBs suffer from insufficient cycle life and potential unsafety. Herein, we construct an all-phosphate sodium-ion battery (AP-SIB) using a Na3V2(PO4)3 cathode, NaTi2(PO4)3 anode, and nonflammable trimethyl phosphate (TMP) electrolyte. The AP-SIB exhibits not only high safety, high rate performance, and ultralong cycle life but also zero-strain characteristics due to the inverse volume change of the phosphate cathode and anode during charge and discharge cycles, offering a safer and cycle-stable Na-ion technology for electric storage applications.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Jian Zhang,Tianlin Li,Qingyan Yuan,Yunjia Wu,Yibo Dou,Jingbin Han
Transition-metal compounds (oxides, sulfides, hydroxides, etc.) as lithium-ion battery (LIB) anodes usually show extraordinary capacity larger than the theoretical value due to the transformation of LiOH into Li2O/LiH. However, there has rarely been a report relaying the transformation of LiOH into Li2O/LiH as the main reaction for LIBs, due to the strong alkalinity of LiOH leading to battery deterioration. In this work, layered silicate MgAl saponite (MA-SAP) is applied as a −OH donor to generate LiOH as the anode material of LIBs for the first time. The MA-SAP maintains a layered structure during the (dis)charging process and has zero-strain characteristic on the (001) crystal plane. In the discharging process, Mg, Al, and Si in the saponite sheets become electron-rich, while the active hydroxyl groups escape from the sheets and combine with lithium ions to form LiOH in the “caves” on sheets, and the LiOH continues to decompose into Li2O and LiH. Consequently, the MA-SAP delivers a maximum capacity of 536 mA h·g–1 at 200 mA·g–1 with a good high-current discharging ability of 155 mA h·g–1 after 1000 cycles under 1 A·g–1. Considering its extremely low cost and completely nontoxic characteristics, MA-SAP has great application prospects in energy storage. In addition, this work has an enlightening effect on the development of new anodes based on extraordinary mechanisms.
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
ELECTROCHIMICA ACTA
·
2015
·
IF 4.504
Xiaoting Lin,Peng Li,Pengfei Wang,Haoxiang Yu,Shangshu Qian,Miao Shui,Xi Zheng,Nengbing Long,Jie Shu
SrLi 2 Ti 6 O 14 is a novel lithium storage host material. In this work, a series of SrLi 2 Ti 6 O 14 are prepared by a simple solid state reaction method at different calcination temperatures and then used as probable host materials for lithium storage. Evaluations of the electrochemical performance in combination with structural analysis suggest that the calcination temperature dramatically affects the phase purity, particle size and lithium storage capability of SrLi 2 Ti 6 O 14 . It can be found that the optimum calcination temperature for SrLi 2 Ti 6 O 14 is 950 °C. SrLi 2 Ti 6 O 14 formed at 950 °C exhibits the highest lithium storage capacity, the fastest lithium-ion diffusion behavior, the best cycling and rate properties among all the five samples. It reveals an initial charge capacity of 170.3 mAh g −1 at the current density of 50 mA g −1 . After 50 cycles, the reversible capacity can be kept at 155.9 mAh g −1 with excellent capacity retention of 91.9%. Even cycled at 300 mA g −1 , it still can deliver a charge capacity of 141.6 mAh g −1 . In contrast, the SrLi 2 Ti 6 O 14 formed at 800 °C can only deliver a reversible capacity of 71.5 mAh g −1 at 300 mA g −1 . Besides, the electrochemical reaction mechanism between SrLi 2 Ti 6 O 14 and Li is thoroughly investigated by various in-situ and ex-situ techniques. It is found that SrLi 2 Ti 6 O 14 is a zero-strain compound for lithium storage. For the lithium storage process, Rietveld refinement results reveal that lithium ions occupy the 8c, 4b and 4a vacant sites in turns during the discharge process, and the stable framework ensures the structural reversibility during repeated cycles, which is important for SrLi 2 Ti 6 O 14 as a probable host material for high performance lithium-ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2021
·
IF 17.789
Yuansheng Shi,Zhizhen Zhang,Pengfeng Jiang,Ang Gao,Kangwan Li,Qinghua Zhang,Yang Sun,Xueyi Lu,Dapeng Cao,Xia Lu
Layered sodium transition metal oxides (NaTMO 2 ) have garned considerate attention as candidates for cathode materials in practical Na-ion batteries because of their potentially high energy density and operating voltage. Among the several categories (P2, P3, O3) of layered NaTMO 2 materials, P3 type cathodes are least studied due to the fast capacity/voltage fading induced by P3-O3 phase transition, as shown by the very few compositions visited in previous reports. It is highly desirable to stabilize the P3 phase throughout the sodium extraction/insertion process as P polytype allows facile migration of Na + -ions between two adjacent prismatic sites. In this work, we synthesized a phase pure P3-Na 0.75 Mg 0.08 Co 0.10 Ni 0.2 Mn 0.60 O 2 (P3-MNCM) via the incorporation of Mg, while successfully maintains the P3 structure during the charging/discharging process. This together with good ionic conductivity , endows good structural reversibility, and consequently leads to superior cycling performance and rate performance than undoped composition. In situ X-ray diffraction (XRD) further verifies that P3-MNCM cathode demonstrates a near zero strain feature. Of special importance is that the P3-O3 phase transition is effectively suppressed with the incoporation of Mg into the transition metal layer. These findings demonstrate the potential of P3 structure as a promising choice for Na ion cathode materials, which open a feritile avenue and will hopefully inspire more endeavors in the exploration of high performance sodium ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Junru Liu,Qiushi Wang,Liang Chen,Jun Zhang,Jiemiao Pan,Xiaomin Wang,Zhaoping Liu
The choice of anode materials for high-voltage aqueous batteries beyond 1.5 V is still far from satisfactory, due to the narrow electrochemical stability window of aqueous electrolytes . With the inherent advantages of low working voltage and fast ionic diffusion, niobium phosphates with polyanionic framework groups built of NbO 6 octahedra and PO 4 tetrahedra are very promising anode materials for high-voltage aqueous batteries. Herein, carbon-coated NbOPO 4 (NPO/C) materials with monoclinic structure has been prepared by the solid-state reaction & chemical vapor deposition method. Between -1.34 V and 0.6 V vs. standard hydrogen electrode, it could deliver a specific capacity of 116 mAh/g with a high coulombic efficiency of 92.0% at a low current rate of 0.33C in aqueous electrolytes based on methylsulfonylmethane, LiClO 4 and H 2 O (DES). The diffusion-controlled process dominates the electrochemical reaction of NPO/C. Upon the reversible insertion/extraction of lithium ion into/from NPO/C, it maintains the monoclinic structure with a small lattice expansion, which is a characteristic of zero-strain effect. Finally, the full cell based on NPO/C anode, LiMn 2 O 4 cathode and DES electrolytes with a high specific energy 101.6 Wh/kg and a high voltage output beyond 2 V has been validated. It also shows excellent cycling performance with the capacity retention of 94.3% after 1000 times at 2C rate, which suggests that monoclinic β-NbOPO 4 can be used as a promising electrode material for aqueous lithium-ion batteries with high voltage output for energy storage in the future.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 41
·2303812
·
IF 19
Ming-Yuan Shen,Jing-Song Wang,Zhouhong Ren,Tao Wu,Xi Liu,Liwei Chen,Wen-Cui Li,An-Hui Lu
P2-type layered oxide material Na 2/3 Ni 1/3 Mn 2/3 O 2 is a competitive candidate for sodium-ion batteries (SIBs). Nevertheless, it suffers from the strong P2–O2 phase transition during charging to the high voltage regime, rendering drastic volume variations and poor cycling performance. Here, a Quasi-zero strain P2-Na 0.75 Li 0.15 Mg 0.05 Ni 0.1 Mn 0.7 O 2 cathode is synthesized, which reflects the vanishing P2–O2 transition with a volume change as low as 0.49%, thus resulting in the material an excellent cycling performance (83.9% capacity retention after 500 cycles at 5 C). The low-volume strain can be attributed to two aspects: (1) the Mg 2+ riveted in the Na layer can act as a “pillar” to stabilize the crystal structure under the condition of sodium removal, thus restricting the structural changes under high voltage. (2) The entry of Li + into the transition metal (TM) layer can mitigate the electron localization in the highly desodiation state and can effectively immobilize the coordination oxygen atoms, thus suppressing the slip of P2–O2 transition. This study not only provides a new insight of Li and Mg synergetic substitution effect on the structural stability of P2-type cathode, but also an efficient avenue for developing cathode materials of SIBs with ultralow bulk strain.
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 COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Xiaolei Li,Jing Zhang,Xuguang An,Qian Liu,Lisi Xie,Weitang Yao,Qingquan Kong
Significant advancements have been made in electric vehicles and consumer devices. However, lithium-ion batteries with commercial graphite anodes still face challenges owing to their sluggish lithium-ion kinetics, low lithiation potential, and limited cycle stability. Consequently, there is a considerable research interest in developing new anode materials with rich resources, “zero-strain” characteristics for long-term cycling, and outstanding electrochemical properties . In this study, we thoroughly examine the relationship between the structure and electrochemical characteristics of λ and β phases of titanium pentoxides (Ti 3 O 5 ). The findings indicate that the β phase of Ti 3 O 5 exhibits a overall electrochemical performance compared to the λ phase. Moreover, β-Ti 3 O 5 electrodes deliver a low, yet safe average operating potential of 0.82 V versus Li/Li + and a reversible specific capacity of 181.9 mA h/g at 0.1 A/g, thereby significantly outperforming λ-Ti 3 O 5 electrodes, with a value of only 55.7 mA h/g. The performance difference can be primarily attributed to the changes in the crystal structure, with the β phase exhibiting a lower energy barrier for lithium-ion diffusion than the λ-phase. Moreover, the β-Ti 3 O 5 electrodes exhibit an good rate performance (capacity retention of 49.5 % at 10 A/g) and good cycling stability (absence of capacity degradation after 2000 cycles at 1.0 A g −1 ). These advantages suggest that β-Ti 3 O 5 is a promising anode material for reliable, rapid-charging, and secure lithium-ion storage.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
·
固态化学
✓ 已验证
DOI
高影响因子
Small
·
2022
·Vol. 18
·期 50
·2204875
·
IF 15.153
Zhenbang Li,Fei Tian,Yan Li,Danni Lei,Chengxin Wang
The insertion type materials are the most important anode materials for lithium-ion batteries, but their insufficient capacity is the bottleneck of practical application. Here, LiAl 5 O 8 nanowires with high theoretical capacity and Li-ions diffusion coefficient are prepared and studied as an insertion anode material, which exhibits zero-strain properties upon electrochemical cycling. However, the poor electronic conductivity of LiAl 5 O 8 definitely sacrifices the capacity and limits the rate performance. Therefore, compact LiAl 5 O 8 and carbon composite are further synthesized, in which nanosized LiAl 5 O 8 particles are uniformly embedded in an amorphous carbon matrix. It displays a reversible capacity of 490.9 mAh g −1 at 1 A g −1 , and the capacity rises continuously to 996.8 mAh g −1 after 1000 cycles due to the interfacial storage mechanism, that the excess Li + ions can be accommodated in the grain boundaries and C/LiAl 5 O 8 interfaces.
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
CHEMISTRY OF MATERIALS
·
2023
·
IF 8.6
Shangfu Gao,Songjie Li,Liting Yang,Xuehua Liu,Yi-Feng Cheng,Jincang Zhang,Chunfu Lin,Renchao Che
High-performance electrode materials are very important for the wide applications of lithium-ion batteries (LIBs), especially in extreme environments. Herein, electronic-conductive Li2VSiO5 microparticles with a carbon coating are developed as a new anode material with high performance in a wide temperature range. In the crystal structure of Li2VSiO5, electrochemical inactive SiO4–LiO6 polyhedron chains/layers fully surround active VO6 octahedron chains/layers, thereby accommodating the volume changes from not only Li+ insertion/extraction but also V-ion reduction/oxidation. Consequently, “zero-strain” behavior with tiny unit-cell-volume variations (maximum 0.194%) is achieved, which enables excellent cyclability with 102.8% capacity retention at 3000 mA g–1 after 3000 cycles within a safe potential range of 0.2–3.0 V. The abundant and wide channels in this special crystal structure allow fast Li+ diffusivity, significantly contributing to a large reversible capacity of 377 mAh g–1 at 50 mA g–1 and high rate capability with a 3000 vs 50 mA g–1 capacity percentage of 45.7%. At an elevated temperature of 60 °C, the excellent cyclability and safety are well retained, while the rate capability and capacity are desirably improved. Thus, this Li2VSiO5 material has great practicability for high-performance LIBs.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
Nature Energy
·
2024
·
IF 49.7
Cui Longfei,Zhang Shu,Ju Jiangwei,Liu Tao,Zheng Yue,Xu Jiahao,Wang Yantao,Li Jiedong,Zhao Jingwen,Ma Jun,Wang Jinzhi,Xu Gaojie,Chan Ting-Shan,Huang Yu-Cheng,Haw Shu-Chih,Chen Jin-Ming,Hu Zhiwei,Cui Guanglei
All-solid-state lithium batteries typically employ heterogeneous composite cathodes where conductive additives are introduced to improve mixed conduction. These electrochemically inactive additives are not fully compatible with layered oxide cathodes that undergo large volume change, significantly reducing battery energy density and cycle life. Here we propose a cathode homogenization strategy by cold pressing a zero-strain cathode material with efficient mixed conduction throughout the (dis)charge process. Li 1.75 Ti 2 (Ge 0.25 P 0.75 S 3.8 Se 0.2 ) 3 possesses considerable Li + /electronic conductivity of 0.22/242 mS cm − 1 when fully charged, increasing monotonically to 0.66/412 mS cm − 1 when fully discharged. It delivers a specific capacity of 250 mAh g −1 and undergoes a 1.2% volume change. Homogeneous cathodes composed of 100% Li 1.75 Ti 2 (Ge 0.25 P 0.75 S 3.8 Se 0.2 ) 3 enable room-temperature all-solid-state lithium batteries to achieve a cycle life of over 20,000 cycles at 2.5 C with a specific capacity retention of 70% and a high energy density of 390 Wh kg − 1 at the cell level at 0.1 C. This cathode homogenization strategy contrasts to the conventional cathode heterogeneous design, potentially improving the viability of all-solid-state lithium batteries for commercial applications.
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
·
2024
·
IF 8.3
Zhenbang Li,Dongpeng Yu,Junjie Xie,Fei Tian,Danni Lei,Chengxin Wang
At present, graphite is a widely used anode material in commercial lithium-ion batteries for its low cost, but the large volume expansion (about 10%) after fully lithiated makes the material prone to cracking and even surface stripping in the cycle. Therefore, the development of zero-strain anode materials (volume change <1%) is of great significance. LiAl5O8 is a zero-strain insertion anode material with a high theoretical specific capacity. However, the Li+ storage mechanism remains unclear, and the cycle life as well as fast-charging capability need to be greatly improved to meet the practical requirements. In this study, LiAl5O8 nanorods are prepared by utilizing aluminum ethoxide nanowires as a soft template and doped with the Zr element to further improve the Li+ diffusion coefficient and electronic conductivity, which in turn improves cycle and rate performances. The Zr-doped LiAl5O8 presents a high reversible capacity of 227.2 mAh g–1 after 20,000 cycles under 5 A g–1, which significantly outperforms the state-of-the-art anode materials. In addition, the Li+ storage mechanisms of LiAl5O8 and Zr-doped LiAl5O8 are clearly clarified with a variety of characterization techniques including nuclear magnetic resonance. This work greatly promotes the practical process of zero-strain insertion anode materials.
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
Energy Storage Materials
·
2021
·
IF 17.789
Xiaoya Gao,Zicheng Zuo,Fan Wang,Qian Chang,Houhe Pan,Liang Li,Feng He,Yuliang Li
Low-strain nanoarchitectures are the precondition for offering a stable electrochemical environment towards high-performance lithium-ion battery anode in the compaction system. Realizing the zero-strain for each particle of high-capacity anode is a scientific challenge, because of huge volume changes arising during the insertion/extraction process of Li + . Herein, we develop a facile and general strategy to construct a freestanding transition metal oxides (TMOs) anode with consecutive nanoarrays of yolk-shell nanorods . By confining the dehydration process in the ion-selective carbon-ene‑yne (CEY) nanotubes , free space can be precisely created for alleviating the excessive volume expansion of internal particles. The all-carbon CEY not only conducts the electrons and supports the nanoarchitecture of the anode, but also provides the high-areal-density atomic-level selective channels for Li + diffusion and prevents the electrolyte from decomposition. The as-obtained strainless anode demonstrates an ultra-stable architecture and interface during cycling, leading to a high specific capacity and enhanced cycling ability. Our result demonstrates the significant advantages to largely produce zero-strain architecture, towards ideally solving the crucial issues confronted in the high-volume-change electrode.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能源存储
✓ 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）