Reversible Aluminum‐Ion Intercalation in Prussian Blue Analogs and Demonstration of a High‐Power Aluminum‐Ion Asymmetric Capacitor

Li, Zheng; Xiang, Kai; Wang, Xing; Carter, W. Craig; Chiang, Yet‐Ming

doi:10.1002/aenm.201401410

Cited by 162 publications

(136 citation statements)

References 48 publications

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“…Here A is an alkali metal-ion and M and N are transition metal ions. [75] As claimed by the Gao group [76] CuHCF prepared by a co-precipitation method had the formula of KCu[Fe(CN) 6 ] 8H 2 O. In this formula, eight water molecules present zeolitic water content which has a positive effect with ion intercalation.…”

Section: Copper Hexacyanoferratementioning

confidence: 91%

Trends in Aluminium‐Based Intercalation Batteries

Ambrož

Macdonald

Nann

2017

Advanced Energy Materials

204

144

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energy, [4] large scale and portable energy storage becomes increasingly more important. Therefore, continued research into high-performing alternatives, which will meet the increased demand is imperative. A common way of evaluating potential alternatives for Li-based batteries involves calculating the theoretical specific capacity of potential candidates and comparing these results with other figures of merit. This reasoning leads to the conclusion that metals in the upper left corner of the periodic table are more interesting than the others. Table 1 shows these calculations together with some other parameters for common metal anodes.A second important parameter when searching for potential battery materials is the oxidation potential of the anode, where lower (less noble) is better. Comparing these parameters for the metals listed in Table 1 shows immediately that Li is one of the most promising candidates, but rare. The second most promising metal is aluminium (Al), which has a relatively high standard oxidation potential. Heavier metals and those in higher groups show much worse performance indicators. Nevertheless, this method of evaluation has to be considered with caution, because it is based on numerous assumptions. Such as, that the anode is oxidized during the charging/discharging process, which is not true for many practical systems.The literature on non-Li based intercalation batteries is clearly dominated by sodium (Na), [9,10] magnesium (Mg) [11,12] and Al [13] systems that are all more abundant natural elements than Li. There are few examples of potassium (K) [14] and (Ca), [15] which coincides clearly with the trend observed in Table 1 (as mentioned above, low performing "candidates" have been omitted in this table). Great efforts are aimed at these alternatives to improve capacity, power and cycles. Comparing Na-ion with Li-ion batteries, the common feature is a monovalent ion that can be inserted/extracted into/from the electrode material. Here, only one charge transfer takes place in contrast to Mg-ion, Ca-ion or Al-ion where two and three charges are involved in redox reactions respectively. As a result of multielectron reactions, higher specific capacity and energy density may be obtained. A key issue in order for multivalent ion insertion to be feasible is the electrode material that has to allow ion mobility.In this review, electrode materials for Al-ion batteries, namely different cathodes are discussed. Furthermore, their performance is compared highlighting drawbacks and advantages of every material.Over the last decade, optimizing energy storage has become significantly important in the field of energy conversion and sustainability. As a result of immense progress in the field, cost-effective and high performance batteries are imperative to meeting the future demand of sustainability. Currently, the best performing batteries are lithium-ion based, but limited lithium (Li) resources make research into alternatives essential. In recent years, the performance of aluminium-ion batteries ha...

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Section: Copper Hexacyanoferratementioning

confidence: 91%

Trends in Aluminium‐Based Intercalation Batteries

Ambrož

Macdonald

Nann

2017

Advanced Energy Materials

204

144

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“…[75,76] 2.6. It is interesting to find that the aluminum battery is actually very similar to nickel-based energy-storage systems, such as nickel-hydrogen andn ickel-zinc batteries.…”

Section: Aluminummentioning

confidence: 99%

Electrolytes for Batteries with Earth‐Abundant Metal Anodes

Zhao

Yin

et al. 2018

Chemistry A European J

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Earth-abundant metal anodes have become one of the hottest topics in recent years. As alternatives to lithium metals, earth-abundant metal anodes have significantly lower cost and higher energy density, but with unprecedented problems that cannot be solved by simply referring to experiences with lithium-metal anodes. The electrolytes for these anodes greatly influence the overall performance, such as Coulombic efficiency, stability, and even the availability to become an anode. In this Minireview, some excellent state-of-art works on the electrolytes of energy-storage systems with sodium-, potassium-, magnesium-, calcium-, and aluminum-metal anodes are concisely summarized. The performance of these systems is highlighted by the rational design of the electrolyte and electrolyte/electrode interface.

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“…Recently, trivalent Al‐ion‐intercalation‐based energy‐storage devices have become of interest due to their advantages of small ionic radius, cost‐effectiveness, high capacity, and safety . However, there are big challenges for the intercalation of Al ions because of the strong electrostatic interactions between the cations and the intercalation framework, and lack of suitable pseudocapacitive materials with superior nanostructures for the favorable insertion/extraction of Al 3+ ions, which has so far not resulted in a breakthrough study using Al 3+ ‐based supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

Aluminum‐Ion‐Intercalation Supercapacitors with Ultrahigh Areal Capacitance and Highly Enhanced Cycling Stability: Power Supply for Flexible Electrochromic Devices

Shao

Liu

et al. 2017

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125

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Electrochemical capacitor systems based on Al ions can offer the possibilities of low cost and high safety, together with a three-electron redox-mechanism-based high capacity, and thus are expected to provide a feasible solution to meet ever-increasing energy demands. Here, highly efficient Al-ion intercalation into W O nanowires (W O NWs) with wide lattice spacing and layered single-crystal structure for electrochemical storage is demonstrated. Moreover, a freestanding composite film with a hierarchical porous structure is prepared through vacuum-assisted filtration of a mixed dispersion containing W O NWs and single-walled carbon nanotubes. The as-prepared composite electrode exhibits extremely high areal capacitances of 1.11-2.92 F cm and 459 F cm at 2 mA cm , enhanced electrochemical stability in the Al electrolyte, as well as excellent mechanical properties. An Al-ion-based, flexible, asymmetric electrochemical capacitor is assembled that displays a high volumetric energy density of 19.0 mWh cm at a high power density of 295 mW cm . Finally, the Al-ion-based asymmetric supercapacitor is used as the power source for poly(3-hexylthiophene)-based electrochromic devices, demonstrating their promising capability in flexible electronic devices.

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Reversible Aluminum‐Ion Intercalation in Prussian Blue Analogs and Demonstration of a High‐Power Aluminum‐Ion Asymmetric Capacitor

Cited by 162 publications

References 48 publications

Trends in Aluminium‐Based Intercalation Batteries

Trends in Aluminium‐Based Intercalation Batteries

Electrolytes for Batteries with Earth‐Abundant Metal Anodes

Aluminum‐Ion‐Intercalation Supercapacitors with Ultrahigh Areal Capacitance and Highly Enhanced Cycling Stability: Power Supply for Flexible Electrochromic Devices

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