Carbon‐Coated Porous Aluminum Foil Anode for High‐Rate, Long‐Term Cycling Stability, and High Energy Density Dual‐Ion Batteries

Tong, Xuefeng; Zhai, Fan; Ji, Bifa; Sheng, Maohua; Tang, Yongbing

doi:10.1002/adma.201603735

Cited by 417 publications

(170 citation statements)

References 68 publications

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“…The process is accomplished inside the cell electrochemically, so that there is no need to worry aboutt he handling of active potassium metal.T he same configuration is also applicable for sodium-ion-based dual-ion cells (Figure 8g). [96][97][98][99] Most recently,b enefiting from the dendrite-free properties and lower platingb arrier,aroom-temperature calcium-based dual-ion battery with tin as the alloy-type anode was first introduced (Figure 8i,j,k). It is known that lithium ions can alloy with aluminum at low po-tentials.T his makes aluminumb oth the current collector and anode material.…”

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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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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“…[10,20] In this work, the electrolyte was optimized to be 4 m LiPF 6 in ethyl methyl carbonate with 5 wt% VC for the nAl@C-G DIB according to the cycling performance test ( Figure S5, Supporting Information). [10,20] In this work, the electrolyte was optimized to be 4 m LiPF 6 in ethyl methyl carbonate with 5 wt% VC for the nAl@C-G DIB according to the cycling performance test ( Figure S5, Supporting Information).…”

Section: Doi: 101002/aenm201701967mentioning

confidence: 99%

Core–Shell Aluminum@Carbon Nanospheres for Dual‐Ion Batteries with Excellent Cycling Performance under High Rates

Tong

Zhai

Chen

et al. 2017

Advanced Energy Materials

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In a typical DIB, graphite is not only used as the anode material but can also serve as the cathode due to its intrinsic redox amphoteric nature. Thus, both Li + cations and anions such as PF 6 − and BF 4 − can intercalate/deintercalate into/from the graphite layers during the charging and discharging processes. Researchers have continued to make progress in DIBs, including studies on the intercalation of different anions into graphite, different cathode materials (e.g., graphitic carbon, [6] metalorganic frameworks, [7] aromatic amines, [8] etc.), investigation of the anion intercalation process, [9] and so on. Although these DIBs usually exhibit higher working voltages (above 4.5 V) than conventional LIBs (normally 3.7 V), their capacities are much lower (typically below 100 mA h g −1 ), which results in moderate energy densities. Recently, by using Al foil as both the anode and current collector, our group reported an aluminum-graphite DIB (AGDIB), which exhibited decreased dead volume and dead weight for the full cell, thus significantly enhanced the energy density of DIB. [10] However, the cycling stability of this AGDIB is still unsatisfied, partially because Al-Li alloying/dealloying on the Al foil anode during the cycling process caused the Al to crack and pulverize, which has been similarly observed in other alloy-type anodes (e.g., Si, Sn, Ge, etc.). [3,11] This pulverization issue is actually caused by the tendency of Al to experience large volume changes during the alloying/dealloying processes (expanding/shrinking by up to ≈97% for AlLi [12] ). The volume change can cause two failure modes: (1) loss of electrical contact during cycling and (2) repeated breaking and reformation of the solid electrolyte interphase (SEI) layer, causing the active materials to continuously consume the electrolyte. [13,14] These failures lead to large irreversible capacities, as well as rapid capacity fading.Herein, we report core-shell Al and carbon nanospheres (named as nAl@C) as anode materials to optimize the cycling performance of Al-based DIBs. It was found that the nAl@C can accommodate mechanical strain and stress better than flat electrodes, thus inhibiting pulverization. In addition, the conductive carbon layer is beneficial for conducting both Li + ions and electrons, which helps to form the SEI film. The DIB based on nAl@C nanospheres anode exhibited superior long-term cycling stability with a capacity retention of 94.6% after 1000 cycles at a high current rate of 15 C (1 C = 100 mA g −1 ) in the Dual-ion battery (DIB) has been proposed as a novel energy storage device with the merits of high safety, low cost and environmental friendliness. Herein, we have developed core/shell aluminum@carbon nanospheres (nAl@C) as anode material for DIB. The nanoscale framework is composed of an Al nanosphere and an amorphous carbon outer layer that is conductive and protective, facilitating the formation of a stable SEI film during cycling. Owing to the core-shell structural design, the nAl@C nanospheres demonstrate signif...

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“…[8,[21][22][23] Although the cycling stability of dual-ion batteries, to some extent, have been improved, some precious superiorities of dual-graphite battery have also been sacrificed. Thus, the employment of IL becomes a "double-edged sword" for dual-graphite technology.…”

Section: Doi: 101002/aenm201801120mentioning

confidence: 99%

A Hybrid Electrolytes Design for Capacity‐Equivalent Dual‐Graphite Battery with Superior Long‐Term Cycle Life

Qiao

Jiang

et al. 2018

Advanced Energy Materials

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Based on cation/anion graphite intercalation chemistry (GIC) processes, dual‐graphite batteries promise to be an energy storage device of high safety and low cost. However, few single electrolyte systems can simultaneously meet the requirements of both high oxidative stability during high voltage anion‐GIC on cathode and high reversibility upon cation‐GIC on anode. Thus, in order to rigidly remedy the irreversible capacity loss, excessive electrode materials need to be fabricated within full cell, resulting in an imbalance toward capacity‐dependent mass loading proportion between both electrodes. This work introduces a hybrid (dual‐organic) electrolytes design strategy into this promising technology. Segregated by a Nafion‐based separator, an ionic liquid electrolyte within the cathodic side can endure high operation potentials, while high Li‐GIC reversibility can be achieved in a superconcentrated ether‐based electrolyte on the anode side. On a mechanistic level, various cation‐GIC processes conducted in different electrolyte systems are clearly revealed and are summarized based on systematical characterizations. More importantly, after synergistically tuning the advantage and drawback of each electrolyte in this hybrid system, the dual‐graphite full cell assembled with capacity‐equivalent graphite‐based electrodes (1:1 mass loading) demonstrates superior long‐term cycling stability with ultrahigh capacity retention for over 3000 cycles.

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Carbon‐Coated Porous Aluminum Foil Anode for High‐Rate, Long‐Term Cycling Stability, and High Energy Density Dual‐Ion Batteries

Cited by 417 publications

References 68 publications

Electrolytes for Batteries with Earth‐Abundant Metal Anodes

Electrolytes for Batteries with Earth‐Abundant Metal Anodes

Core–Shell Aluminum@Carbon Nanospheres for Dual‐Ion Batteries with Excellent Cycling Performance under High Rates

A Hybrid Electrolytes Design for Capacity‐Equivalent Dual‐Graphite Battery with Superior Long‐Term Cycle Life

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