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1.
Youngjin Kim Kwang‐Ho Ha Prof. Seung M. Oh Prof. Kyu Tae Lee 《Chemistry (Weinheim an der Bergstrasse, Germany)》2014,20(38):11980-11992
Na‐ion batteries are an attractive alternative to Li‐ion batteries for large‐scale energy storage systems because of their low cost and the abundant Na resources. This Review provides a comprehensive overview of selected anode materials with high reversible capacities that can increase the energy density of Na‐ion batteries. Moreover, we discuss the reaction and failure mechanisms of those anode materials with a view to suggesting promising strategies for improving their electrochemical performance. 相似文献
2.
Bismuth Nanoparticles Embedded in Carbon Spheres as Anode Materials for Sodium/Lithium‐Ion Batteries
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Prof. Zhian Zhang Dr. Kai Zhang Prof. Yanqing Lai Prof. Jie Li 《Chemistry (Weinheim an der Bergstrasse, Germany)》2016,22(7):2333-2338
Sodium‐ion batteries (SIBs) are regarded as an attractive alternative to lithium‐ion batteries (LIBs) for large‐scale commercial applications, because of the abundant terrestrial reserves of sodium. Exporting suitable anode materials is the key to the development of SIBs and LIBs. In this contribution, we report on the fabrication of Bi@C microspheres using aerosol spray pyrolysis technique. When used as SIBs anode materials, the Bi@C microsphere delivered a high capacity of 123.5 mAh g?1 after 100 cycles at 100 mA g?1. The rate performance is also impressive (specific capacities of 299, 252, 192, 141, and 90 mAh g?1 are obtained under current densities of 0.1, 0.2, 0.5, 1, and 2 A g?1, respectively). Furthermore, the Bi@C microsphere also proved to be suitable LIB anode materials. The excellent electrochemical performance for both SIBs and LIBs can attributed to the Bi@C microsphere structure with Bi nanoparticles uniformly dispersed in carbon spheres. 相似文献
3.
Xue‐Qiang Zhang Tao Li Bo‐Quan Li Rui Zhang Peng Shi Chong Yan Jia‐Qi Huang Qiang Zhang 《Angewandte Chemie (International ed. in English)》2020,59(8):3252-3257
High‐energy‐density Li metal batteries suffer from a short lifespan under practical conditions, such as limited lithium, high loading cathode, and lean electrolytes, owing to the absence of appropriate solid electrolyte interphase (SEI). Herein, a sustainable SEI was designed rationally by combining fluorinated co‐solvents with sustained‐release additives for practical challenges. The intrinsic uniformity of SEI and the constant supplements of building blocks of SEI jointly afford to sustainable SEI. Specific spatial distributions and abundant heterogeneous grain boundaries of LiF, LiNxOy, and Li2O effectively regulate uniformity of Li deposition. In a Li metal battery with an ultrathin Li anode (33 μm), a high‐loading LiNi0.5Co0.2Mn0.3O2 cathode (4.4 mAh cm?2), and lean electrolytes (6.1 g Ah?1), 83 % of initial capacity retains after 150 cycles. A pouch cell (3.5 Ah) demonstrated a specific energy of 340 Wh kg?1 for 60 cycles with lean electrolytes (2.3 g Ah?1). 相似文献
4.
Ruding Zhang Jiajia Huang Wenzhuo Deng Jingze Bao Yilong Pan Shuping Huang Chuan‐Fu Sun 《Angewandte Chemie (International ed. in English)》2019,58(46):16474-16479
A key challenge for potassium‐ion batteries is to explore low‐cost electrode materials that allow fast and reversible insertion of large‐ionic‐size K+. Here, we report an inorganic‐open‐framework anode (KTiOPO4), which achieves a reversible capacity of up to 102 mAh g?1 (307 mAh cm?3), flat voltage plateaus at a safe average potential of 0.82 V (vs. K/K+), a long lifespan of over 200 cycles, and K+‐transport kinetics ≈10 times faster than those of Na‐superionic conductors. Combined experimental analysis and first‐principles calculations reveal a charge storage mechanism involving biphasic and solid solution reactions and a cell volume change (9.5 %) even smaller than that for Li+‐insertion into graphite (≈10 %). KTiOPO4 exhibits quasi‐3D lattice expansion on K+ intercalation, enabling the disintegration of small lattice strain and thus high structural stability. The inorganic open‐frameworks may open a new avenue for exploring low‐cost, stable and fast‐kinetic battery chemistry. 相似文献
5.
Binary transition metal selenides have been more promising than single transition metal selenides as anode materials for sodium‐ion batteries (SIBs). However, the controlled synthesis of transition metal selenides, especially those derived from metal‐organic‐frameworks with well‐controlled structure and morphology is still challenging. In this paper, highly porous NiCoSe4@NC composite microspheres were synthesized by simultaneous carbonization and selenization of a Ni?Co‐based metal‐organic framework (NiCo‐MOF) and characterized by scanning electron microscopy, transition electron microscopy, X‐Ray diffraction, X‐Ray photoelectron spectroscopy and electrochemical techniques. The rationally engineered NiCoSe4@NC composite exhibits a capacity of 325 mAh g?1 at a current density of 1 A g?1, and 277.8 mAh g?1 at 10 A g?1. Most importantly, the NiCoSe4@NC retains a capacity of 293 mAh g?1 at 1 A g?1 after 1500 cycles, with a capacity decay rate of 0.025 % per cycle. 相似文献
6.
As an energy‐storage system, rechargeable potassium‐ion batteries (PIBs) have aroused widespread attention in recent years due to their earth abundance, low standard redox potential, and high ionic conductivity. The development of high‐performance electrode materials is key to optimize the battery performance and useful to improve the feasibility of PIB technology. In this sense, a minireview on alloying‐type anode materials for advanced PIBs is provided, covering the potassium storage properties, reaction mechanisms, theoretical analysis, electrochemical performance, and suitable binders and electrolytes. 相似文献
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8.
Boshi Cheng Xing Li Linhai Pan Hongqiang Xu Haojie Duan Qian Wu Bo Yin Haiyong He 《Molecules (Basel, Switzerland)》2022,27(9)
Although K+ is readily inserted into graphite, the volume expansion of graphite of up to 60% upon the formation of KC8, together with its slow diffusion kinetics, prevent graphite from being used as an anode for potassium-ion batteries (PIBs). Soft carbon with low crystallinity and an incompact carbon structure can overcome these shortcomings of graphite. Here, ultra-thin two-dimensional (2D) wrinkled soft carbon sheets (USCs) are demonstrated to have high specific capacity, excellent rate capability, and outstanding reversibility. The wrinkles themselves prevent the dense stacking of micron-sized sheets and provide sufficient space to accommodate the volume change of USCs during the insertion/extraction of K+. The ultra-thin property reduces strain during the formation of K-C compounds, and further maintains structural stability. The wrinkles and heteroatoms also introduce abundant edge defects that can provide more active sites and shorten the K+ migration distance, improving reaction kinetics. The optimized USC20−1 electrode exhibits a reversible capacity of 151 mAh g−1 even at 6400 mA g−1, and excellent cyclic stability up to 2500 cycles at 1000 mA g−1. Such comprehensive electrochemical performance will accelerate the adoption of PIBs in electrical energy applications. 相似文献
9.
Dr. Yongchang Liu Dr. Ning Zhang Hongyan Kang Minghui Shang Prof. Lifang Jiao Prof. Jun Chen 《Chemistry (Weinheim an der Bergstrasse, Germany)》2015,21(33):11878-11884
We report the synthesis and anode application for sodium‐ion batteries (SIBs) of WS2 nanowires (WS2 NWs). WS2 NWs with very thin diameter of ≈25 nm and expanded interlayer spacing of 0.83 nm were prepared by using a facile solvothermal method followed by a heat treatment. The as‐prepared WS2 NWs were evaluated as anode materials of SIBs in two potential windows of 0.01–2.5 V and 0.5–3 V. WS2 NWs displayed a remarkable capacity (605.3 mA h g?1 at 100 mA g?1) but with irreversible conversion reaction in the potential window of 0.01–2.5 V. In comparison, WS2 NWs showed a reversible intercalation mechanism in the potential window of 0.5–3 V, in which the nanowire‐framework is well maintained. In the latter case, the interlayers of WS2 are gradually expanded and exfoliated during repeated charge–discharge cycling. This not only provides more active sites and open channels for the intercalation of Na+ but also facilitates the electronic and ionic diffusion. Therefore, WS2 NWs exhibited an ultra‐long cycle life with high capacity and rate capability in the potential window of 0.5–3 V. This study shows that WS2 NWs are promising as the anode materials of room‐temperature SIBs. 相似文献
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11.
SnS2 Nanoplatelet@Graphene Nanocomposites as High‐Capacity Anode Materials for Sodium‐Ion Batteries
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Xiuqiang Xie Dr. Dawei Su Shuangqiang Chen Jinqiang Zhang Dr. Shixue Dou Prof. Dr. Guoxiu Wang 《化学:亚洲杂志》2014,9(6):1611-1617
Na‐ion batteries have been attracting intensive investigations as a possible alternative to Li‐ion batteries. Herein, we report the synthesis of SnS2 nanoplatelet@graphene nanocomposites by using a morphology‐controlled hydrothermal method. The as‐prepared SnS2/graphene nanocomposites present a unique two‐dimensional platelet‐on‐sheet nanoarchitecture, which has been identified by scanning and transmission electron microscopy. When applied as the anode material for Na‐ion batteries, the SnS2/graphene nanosheets achieved a high reversible specific sodium‐ion storage capacity of 725 mA h g?1, stable cyclability, and an enhanced high‐rate capability. The improved electrochemical performance for reversible sodium‐ion storage could be ascribed to the synergistic effects of the SnS2 nanoplatelet/graphene nanosheets as an integrated hybrid nanoarchitecture, in which the graphene nanosheets provide electronic conductivity and cushion for the active SnS2 nanoplatelets during Na‐ion insertion and extraction processes. 相似文献
12.
Sujong Chae Seong‐Hyeon Choi Namhyung Kim Jaekyung Sung Jaephil Cho 《Angewandte Chemie (International ed. in English)》2020,59(1):110-135
Silicon is considered a most promising anode material for overcoming the theoretical capacity limit of carbonaceous anodes. The use of nanomethods has led to significant progress being made with Si anodes to address the severe volume change during (de)lithiation. However, less progress has been made in the practical application of Si anodes in commercial lithium‐ion batteries (LIBs). The drastic increase in the energy demands of diverse industries has led to the co‐utilization of Si and graphite resurfacing as a commercially viable method for realizing high energy. Herein, we highlight the necessity for the co‐utilization of graphite and Si for commercialization and discuss the development of graphite/Si anodes. Representative Si anodes used in graphite‐blended electrodes are covered and a variety of strategies for building graphite/Si composites are organized according to their synthetic methods. The criteria for the co‐utilization of graphite and Si are systematically presented. Finally, we provide suggestions for the commercialization of graphite/Si combinations. 相似文献
13.
采用熔盐锌热法,以蔗糖为前驱体成功制备了三维多孔碳材料,并将其用作钾离子电池负极材料。所制备的三维多孔碳具有大量相互贯通的孔道,有效地缓解了电极在充放电循环过程中的体积效应,提高了电解液对电极的浸润性,缩短了钾离子的扩散路径,从而展现出优异的循环稳定性和倍率性能。三维多孔碳电极在0.5 A·g-1的电流密度下,经过2500次循环后仍展现174.6 mAh·g-1的比容量,甚至在4.4 A·g-1的高倍率下容量仍保持在170 mAh·g-1。 相似文献
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15.
Highly Concentrated Electrolyte towards Enhanced Energy Density and Cycling Life of Dual‐Ion Battery
Li Xiang Xuewu Ou Xingyong Wang Zhiming Zhou Xiang Li Yongbing Tang 《Angewandte Chemie (International ed. in English)》2020,59(41):17924-17930
Dual‐ion batteries (DIBs) have attracted much attention owing to their low cost, high voltage, and environmental friendliness. As the source of active ions during the charging/discharging process, the electrolyte plays a critical role in the performance of DIBs, including capacity, energy density, and cycling life. However, most used electrolyte systems based on the LiPF6 salt demonstrate unsatisfactory performance in DIBs. We have successfully developed a 7.5 mol kg?1 lithium bis(fluorosulfonyl)imide (LiFSI) in a carbonate electrolyte system. Compared with diluted electrolytes, this highly concentrated electrolyte exhibits several advantages: 1) enhanced intercalation capacity and cycling stability of the graphite cathode, 2) optimized structural stability of the Al anode, and 3) significantly increased battery energy density. A proof‐of‐concept DIB based on this concentrated electrolyte exhibits a discharge capacity of 94.0 mAh g?1 at 200 mA g?1 and 96.8 % capacity retention after 500 cycles. By counting both the electrode materials and electrolyte, the energy density of this DIB reaches up to ≈180 Wh kg?1, which is among the best performances of DIBs reported to date. 相似文献
16.
Cobalt‐Doped FeS2 Nanospheres with Complete Solid Solubility as a High‐Performance Anode Material for Sodium‐Ion Batteries
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Dr. Kai Zhang Mihui Park Limin Zhou Gi‐Hyeok Lee Jeongyim Shin Dr. Zhe Hu Dr. Shu‐Lei Chou Prof. Jun Chen Prof. Yong‐Mook Kang 《Angewandte Chemie (International ed. in English)》2016,55(41):12822-12826
Considering that the high capacity, long‐term cycle life, and high‐rate capability of anode materials for sodium‐ion batteries (SIBs) is a bottleneck currently, a series of Co‐doped FeS2 solid solutions with different Co contents were prepared by a facile solvothermal method, and for the first time their Na‐storage properties were investigated. The optimized Co0.5Fe0.5S2 (Fe0.5) has discharge capacities of 0.220 Ah g?1 after 5000 cycles at 2 A g?1 and 0.172 Ah g?1 even at 20 A g?1 with compatible ether‐based electrolyte in a voltage window of 0.8–2.9 V. The Fe0.5 sample transforms to layered NaxCo0.5Fe0.5S2 by initial activation, and the layered structure is maintained during following cycles. The redox reactions of NaxCo0.5Fe0.5S2 are dominated by pseudocapacitive behavior, leading to fast Na+ insertion/extraction and durable cycle life. A Na3V2(PO4)3/Fe0.5 full cell was assembled, delivering an initial capacity of 0.340 Ah g?1. 相似文献
17.
Dr. Md Mokhlesur Rahman Irin Sultana Dr. Tianyu Yang Dr. Zhiqiang Chen Dr. Neeraj Sharma Dr. Alexey M. Glushenkov Prof. Ying Chen 《Angewandte Chemie (International ed. in English)》2016,55(52):16059-16063
A simple, cost‐effective, and easily scalable molten salt method for the preparation of Li2GeO3 as a new type of high‐performance anode for lithium‐ion batteries is reported. The Li2GeO3 exhibits a unique porous architecture consisting of micrometer‐sized clusters (secondary particles) composed of numerous nanoparticles (primary particles) and can be used directly without further carbon coating which is a common exercise for most electrode materials. The new anode displays superior cycling stability with a retained charge capacity of 725 mAh g?1 after 300 cycles at 50 mA g?1. The electrode also offers excellent rate capability with a capacity recovery of 810 mAh g?1 (94 % retention) after 35 cycles of ascending steps of current in the range of 25–800 mA g?1 and finally back to 25 mA g?1. This work emphasizes the importance of exploring new electrode materials without carbon coating as carbon‐coated materials demonstrate several drawbacks in full devices. Therefore, this study provides a method and a new type of anode with high reversibility and long cycle stability. 相似文献
18.
Mesoporous Amorphous Silicon: A Simple Synthesis of a High‐Rate and Long‐Life Anode Material for Lithium‐Ion Batteries
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Liangdong Lin Xuena Xu Chenxiao Chu Muhammad K. Majeed Prof. Jian Yang 《Angewandte Chemie (International ed. in English)》2016,55(45):14063-14066
Amorphous Si (a‐Si) shows potential advantages over crystalline Si (c‐Si) in lithium‐ion batteries, owing to its high lithiation potential and good tolerance to intrinsic strain/stress. Herein, porous a‐Si has been synthesized by a simple process, without the uses of dangerous or expensive reagents, sophisticated equipment, and strong acids that potential cause environment risks. These porous a‐Si particles exhibit excellent electrochemical performances, owing to their porous structure, amorphous nature, and surface modification. They deliver a capacity of 1025 mAh g?1 at 3 A g?1 after 700 cycles. Moreover, the reversible capacity after electrochemical activation, is quite stable throughout the cycling, resulting in a capacity retention about around 88 %. The direct comparison between a‐Si and c‐Si anodes clearly supports the advantages of a‐Si in lithium‐ion batteries. 相似文献
19.
Dingrong Deng Dr. Yanjun Zhang Gen Li Xueyun Wang Dr. Li‐Hua Gan Dr. Li Jiang Prof. Chun‐Ru Wang 《化学:亚洲杂志》2014,9(5):1265-1269
Nanometer‐sized flakes of MnV2O6 were synthesized by a hydrothermal method. No surfactant, expensive metal salt, or alkali reagent was used. These MnV2O6 nanoflakes present a high discharge capacity of 768 mA h g?1 at 200 mA g?1, good rate capacity, and excellent cycling stability. Further investigation demonstrates that the nanoflake structure and the specific crystal structure make the prepared MnV2O6 a suitable material for lithium‐ion batteries. 相似文献
20.
Ziqiang Zhao Saikat Das Guolong Xing Dr. Pierre Fayon Patrick Heasman Michael Jay Steven Bailey Prof. Colin Lambert Hiroki Yamada Prof. Toru Wakihara Dr. Abbie Trewin Prof. Teng Ben Prof. Shilun Qiu Prof. Valentin Valtchev 《Angewandte Chemie (International ed. in English)》2018,57(37):11952-11956
We report the first organically synthesized sp–sp3 hybridized porous carbon, OSPC‐1. This new carbon shows electron conductivity, high porosity, the highest uptake of lithium ions of any carbon material to‐date, and the ability to inhibit dangerous lithium dendrite formation. The new carbon exhibits exceptional potential as anode material for lithium‐ion batteries (LIBs) with high capacity, excellent rate capability, long cycle life, and potential for improved safety performance. 相似文献