scholarly journals Tetradiketone macrocycle for divalent aluminium ion batteries

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Dong-Joo Yoo ◽  
Martin Heeney ◽  
Florian Glöcklhofer ◽  
Jang Wook Choi
Keyword(s):  
Low Cost ◽  
Resonance Effect ◽  
Specific Capacity ◽  
Complex Ions ◽  
Active Materials ◽  
High Specific Capacity ◽  
Aluminium Ion ◽  
Valence States ◽  
Ion Storage ◽  
Metallic Aluminium

AbstractContrary to early motivation, the majority of aluminium ion batteries developed to date do not utilise multivalent ion storage; rather, these batteries rely on monovalent complex ions for their main redox reaction. This limitation is somewhat frustrating because the innate advantages of metallic aluminium such as its low cost and high air stability cannot be fully taken advantage of. Here, we report a tetradiketone macrocycle as an aluminium ion battery cathode material that reversibly reacts with divalent (AlCl2+) ions and consequently achieves a high specific capacity of 350 mAh g−1 along with a lifetime of 8000 cycles. The preferred storage of divalent ions over their competing monovalent counterparts can be explained by the relatively unstable discharge state when using monovalent AlCl2+ ions, which exert a moderate resonance effect to stabilise the structure. This study opens an avenue to realise truly multivalent aluminium ion batteries based on organic active materials, by tuning the relative stability of discharged states with carrier ions of different valence states.

Manganese phosphoxide/Ni5P4 hybrids as an anode material for high energy density and rate potassium-ion storage

2021 ◽  
Author(s):  
Sen Yang ◽  
Ting Li ◽  
Yiwei Tan
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Large Scale ◽  
Low Cost ◽  
Lithium Ion ◽  
High Energy ◽  
Potassium Ion ◽  
High Energy Density ◽  
Active Materials ◽  
Ion Storage

Potassium-ion batteries (PIBs) that serve as low-cost and large-scale secondary batteries are regarded as promising alternatives and supplement to lithium-ion batteries. Hybrid active materials can be featured with the synergistic...

Cr3+-doped Li3VO4 for enhanced Li+ storage

2019 ◽  
Vol 13 (02) ◽  
pp. 2050005
Author(s):  
Guisheng Liang ◽  
Xingxing Jin ◽  
Cihui Huang ◽  
Lijie Luo ◽  
Yongjun Chen ◽  
...  
Keyword(s):  
Low Cost ◽  
Electronic Conductivity ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Rate Performance ◽  
Orthorhombic Crystal ◽  
Orthorhombic Crystal Structure ◽  
High Specific Capacity ◽  
Safe Working

Li3VO4 has gained significant attention as a promising anode material for lithium-ion batteries owing to its high specific capacity, low cost and safe working potential. Unfortunately, its disappointing electronic conductivity limits its rate performance. To address this problem, a series of Cr[Formula: see text]-doped Li3VO4 compounds are synthesized by solid-state reaction. The obtained Li[Formula: see text]Cr[Formula: see text]V[Formula: see text]O4 compounds ([Formula: see text] and 0.02) have the same orthorhombic crystal structure (Pnm21 space group), suggesting the successful Cr[Formula: see text] doping in Li3VO4. Compared with Li3VO4, Li[Formula: see text]Cr[Formula: see text]V[Formula: see text]O4 exhibits a two orders of magnitude larger electronic conductivity. Additional benefits of the Cr[Formula: see text] doping include the increase of the Li[Formula: see text] diffusion coefficient and the decrease of the particle size. Consequently, Li[Formula: see text]Cr[Formula: see text]V[Formula: see text]O4 displays not only a large reversible capacity (363[Formula: see text]mAh g[Formula: see text] at 60[Formula: see text]mA g[Formula: see text] and superior cyclic stability (86.6% capacity retention after 1000 cycles at 1200[Formula: see text]mA g[Formula: see text] but also decent rate performance (147[Formula: see text]mAh g[Formula: see text] at 1200[Formula: see text]mA g[Formula: see text].

Recent advances in cathode materials for rechargeable lithium–sulfur batteries

Nanoscale ◽  
2019 ◽  
Vol 11 (33) ◽  
pp. 15418-15439 ◽  
Author(s):  
Fang Li ◽  
Quanhui Liu ◽  
Jiawen Hu ◽  
Yuezhan Feng ◽  
Pengbin He ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Cathode Materials ◽  
Storage Systems ◽  
Low Cost ◽  
Specific Capacity ◽  
Promising Candidate ◽  
High Specific Capacity ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Li–S batteries are regarded as a promising candidate for next-generation energy storage systems due to their high specific capacity (1675 mA h g−1) and energy density (2600 W h kg−1) as well as the abundance, safety and low cost of S material.

Influence of phase variation of ZnMn2O4/carbon electrodes on cycling performances of Li-ion batteries

2020 ◽  
Vol 7 (19) ◽  
pp. 3657-3666
Author(s):  
Zijian Zhao ◽  
Guiying Tian ◽  
Angelina Sarapulova ◽  
Lihua Zhu ◽  
Sonia Dsoke
Keyword(s):  
Transition Metal Oxides ◽  
Anode Materials ◽  
High Performance ◽  
Low Cost ◽  
Specific Capacity ◽  
Phase Variation ◽  
Li Ion Batteries ◽  
High Specific Capacity ◽  
Li Ion ◽  
Cycling Performances

Due to the high specific capacity and low cost, transition metal oxides (TMOs) exhibit huge potential as anode materials for high-performance Li-ion batteries.

MoO3/CNTs Loading in Separator for Performance-Improving Current-Collector-Free Lithium Ion Batteries

2020 ◽  
Vol 15 (2) ◽  
pp. 204-211
Author(s):  
Peng Peng ◽  
Jiewei Chen ◽  
Kai Niu ◽  
Zhuohai Liu ◽  
Hao Huang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Low Cost ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Current Collector ◽  
Charge Transfer Resistance ◽  
Transfer Resistance ◽  
High Specific Capacity ◽  
Composite Separator ◽  
Novel Strategy

A novel strategy for structural design of current-collector-free lithium ion batteries (LIBs) has been proposed, MoO3/CNTs loading on the single side of a separator by a simple spin-coating method. LIBs with such a MoO3-based composite separator eliminate the need for metal current collectors and exhibit an extra high specific capacity (0.2C, ∼1200 mA h g–1). Faster ion transport and lower charge transfer resistance (Rct) of the composite separator were proved compared with the traditional MoO3-based electrode, which results in the increased special capacity. In addition, the pseudocapacitive effect caused by vacancies and narrow interval in the MoO3/CNTs materials also contributes to the high specific capacity of the batteries. The highly efficient ion and electron transport ability of the composite separator were proved in this study, and such a novel design strategy would be an alternative for low-cost LIBs.

Tailored nanoscale interface in a hierarchical carbon nanotube supported MoS2@MoO2-C electrode toward high performance sodium ion storage

2020 ◽  
Vol 8 (21) ◽  
pp. 11011-11018 ◽  
Author(s):  
Chunrong Ma ◽  
Zhixin Xu ◽  
Jiali Jiang ◽  
ZiFeng Ma ◽  
Tristan Olsen ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
High Performance ◽  
Specific Capacity ◽  
Rate Capability ◽  
Sodium Ion ◽  
High Specific Capacity ◽  
Ion Storage ◽  
Excellent Cycling Stability ◽  
Hierarchical Carbon ◽  
Sodium Ion Storage

A MoS2/MoO2 heterointerface is created, with MoO2 nanocrystals anchored on MoS2 nanosheets, assisted by an N-doped carbon protecting layer, on CNTs. The electrode has a high specific capacity of ∼700 mA h g−1 at 0.2 A g−1, excellent cycling stability and rate capability.

Promoting the cyclic and rate performance of lithium-rich ternary materials via surface modification and lattice expansion

RSC Advances ◽  
2015 ◽  
Vol 5 (113) ◽  
pp. 93048-93056 ◽  
Author(s):  
Mohammed Adnan Mezaal ◽  
Limin Qu ◽  
Guanghua Li ◽  
Rui Zhang ◽  
Jiang Xuejiao ◽  
...  
Keyword(s):  
Surface Modification ◽  
Transition Metal Oxides ◽  
Lithium Batteries ◽  
Electrode Materials ◽  
Low Cost ◽  
Specific Capacity ◽  
High Energy ◽  
Lattice Expansion ◽  
Rate Performance ◽  
High Specific Capacity

Nickel-rich layered lithium transition-metal oxides have been studied intensively as high-energy positive-electrode materials for lithium batteries because of their high specific capacity and relatively low-cost.

Mixtures of TiO2·0.2H2O and LiFePO4 as Li-ion Battery Cathode Materials

2012 ◽  
Vol 512-515 ◽  
pp. 1592-1597
Author(s):  
Zi Jian Hong ◽  
Zi Long Tang ◽  
Yu Xing Xu ◽  
Ye Hong ◽  
Ao Tan ◽  
...  
Keyword(s):  
Cathode Material ◽  
Specific Energy ◽  
Low Cost ◽  
Specific Capacity ◽  
Constant Current ◽  
Parallel Model ◽  
High Specific Capacity ◽  
Voltage Plateau ◽  
Rate Property ◽  
Cycle Property

Mixtures of TiO2•0.2H2O (HTO) and LiFePO4 were prepared via three main composite methods: 2-2 series model, 2-2 parallel model and 3-3 model. HTO had been reported to exhibit high specific capacity (~200 mAh/g at 1 C) as well as excellent cycle property, whereas its voltage plateau was too low (about 1.7 V vs. Li) as a cathode material. LiFePO4 was a promising cathode material for its high voltage plateau (about 3.4 V vs. Li), low cost and high specific capacity (~150 mAh/g at 1 C). However, because of its low conductivity, the rate property as well as cycle property was limited. The mixtures of HTO and LiFePO4 were considered to combine the advantages of both materials. By comparison, the 2-2 parallel model excelled in both rate property and cycle property. Its specific capacity can reach as high as 220 mAh/g with a high specific energy of 450 Wh/Kg at 0.1 C. Even after cycled 200 times at 2 C, the capacity can still be higher than 100 mAh/g. CV measurements and a combined constant current and constant voltage tests supported a two plateaus process for 2-2 parallel model. The charge-discharge voltage gap increased for the 2-2 parallel composites, which was supposed to be related to the interface. In general, the specific energy was much higher than HTO while the specific capacity as well as cycle property was much better than LiFePO4 as a cathode material. .

Azine-based polymers with a two-electron redox process as cathode materials for organic batteries

2020 ◽  
Vol 8 (22) ◽  
pp. 11195-11201
Author(s):  
Pascal Acker ◽  
Martin E. Speer ◽  
Jan S. Wössner ◽  
Birgit Esser
Keyword(s):  
Cathode Materials ◽  
Specific Capacity ◽  
Redox Process ◽  
High Rate ◽  
Rate Performance ◽  
Active Materials ◽  
High Specific Capacity ◽  
Organic Batteries ◽  
High Rate Performance

Azine-based polymers as cathode-active materials with a two-electron redox process show a high specific capacity of up to 133 mA h g−1 in Li–organic batteries at potentials of 2.9 and 3.3 V vs. Li/Li+ paired with a high rate performance up to 100C.

scholarly journals B-Doped Si@C Nanorod Anodes for High-Performance Lithium-Ion Batteries

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Shibin Liu ◽  
Jianwei Xu ◽  
Hongyu Zhou ◽  
Jing Wang ◽  
Xiangcai Meng
Keyword(s):  
High Performance ◽  
Coulombic Efficiency ◽  
Low Cost ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Li Ion Batteries ◽  
High Specific Capacity ◽  
Production Strategy ◽  
Li Ion ◽  
B Doping

B doping plays an important role in improving the conductivity and electrochemical properties of Si anodes for Li-ion batteries. Herein, we developed a facile and massive production strategy to fabricate C-coated B-doped Si (B-Si@C) nanorod anodes using casting intermediate alloys of Al-Si and Al-B and dealloying followed by C coating. The B-Si@C nanorod anodes demonstrate a high specific capacity of 560 mAg-1, with a high initial coulombic efficiency of 90.6% and substantial cycling stability. Notably, the melting cast approach is facile, simple, and applicable to doping treatments, opening new possibilities for the development of low-cost, environmentally benign, and high-performance Li-ion batteries.

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