Bringing Hetero‐Polyacid‐Based Underwater Adhesive as Printable Cathode Coating for Self‐Powered Electrochromic Aqueous Batteries

Li, Xiaodong; Du, Zhanglei; Song, Zhengyi; Li, Bao; Wu, Lixin; Liu, Qingping; Zhang, Houyu; Li, Wen

doi:10.1002/adfm.201800599

Cited by 61 publications

(66 citation statements)

References 64 publications

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“…In the case of CaZn 3.6 VO, the redox potential in this system can be obtained from the CV curves of Zn/CaVO batteries ( Fig. 2a) 53 , in which the minimum reduction peak potential of CaVO versus Zn 2+ /Zn is 0.47 V.…”

Section: Resultsmentioning

confidence: 99%

A chemically self-charging aqueous zinc-ion battery

et al. 2020

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Self-charging power systems integrating energy harvesting technologies and batteries are attracting extensive attention in energy technologies. However, the conventional integrated systems are highly dependent on the availability of the energy sources and generally possess complicated configuration. Herein, we develop chemically self-charging aqueous zinc-ion batteries with a simplified two-electrode configuration based on CaV 6 O 16 ·3H 2 O electrode. Such system possesses the capability of energy harvesting, conversion and storage simultaneously. It can be chemically self-recharged by the spontaneous redox reaction between the discharged cathode and oxygen from the ambient environment. Chemically selfrecharged zinc-ion batteries display an initial open-circuit voltage of about 1.05 V and a considerable discharge capacity of about 239 mAh g −1 , indicating the excellent selfrechargeability. Impressively, such chemically self-charging zinc-ion batteries can also work well at chemical or/and galvanostatic charging hybrid modes. This work not only provides a route to design chemically self-charging energy storage, but also broadens the horizons of aqueous zinc-ion batteries.

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Section: Resultsmentioning

confidence: 99%

A chemically self-charging aqueous zinc-ion battery

et al. 2020

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“…To analyze the phase composition of the as-synthesized vanadium oxide nanoparticles, the colloidal suspension was dried at room temperature and characterized by the powder X-ray diffraction (XRD) measurement. The high-resolution TEM image, inset in Figure 1e, shows clear lattice fringes of 1.91 and 2.92 Å correspond to the and (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) planes, respectively. 00-028-1433) phase.…”

Section: Resultsmentioning

confidence: 99%

Electrochromic Battery Displays with Energy Retrieval Functions Using Solution‐Processable Colloidal Vanadium Oxide Nanoparticles

Zhang

Al‐Hussein

et al. 2019

Advanced Optical Materials

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for developing bistable displays due to their zero-energy consumption while maintaining a colored or colorless state. [3] However, operation of traditional electrochromic displays requires external voltages to trigger the coloration/bleaching processes, which makes the traditional electrochromic displays far from a netzero energy-consumption technology. The majority of the current electrochromic display research has focused on developing nanostructure electrochromic materials for fast switchings [4,5] without paying attention to how to reduce the consumed energy of the electrochromic displays.Recently, we developed a promising Zn-based electrochromic battery technology for smart windows. [6,7] The electrochromic battery exhibits self-coloration behaviors and eliminates the external voltage requirement for triggering the coloration process. The aqueous compatible Zn anode implements a much lower charged/bleached voltage for the electrochromic battery compared to the Li-and Al-based electrochromic batteries. [8][9][10] The lower charged/bleached potential indicates a lower energy consumption during the bleaching process. As such, the Zn-based aqueous electrochromic battery platform is an energy-efficient technology for reducing the energy consumption of electrochromic devices. To date, no reports exist on the utilization of electrochromic battery systems for developing energy-efficient electrochromic displays.Electrochromic materials play an important role in the development of electrochromic battery displays. Transition metal oxides (TMOs) have shown excellent electrochromic properties due to their remarkable multivalence states and the corresponding color evolutions. [11][12][13][14][15] Among the TMOs, vanadium oxide is considered the most promising material for electrochromic displays because of its multicolor behaviors. [16][17][18] However, the low electrical conductivity, significant volume expansion during cycling, and the slow reaction kinetics of bulk vanadium oxide prevent its widespread use. [19,20] In recent years, nanosized vanadium oxides have been studied to mediate these drawbacks because nanostructures provide abundant active sites on the surface and shorten the diffusion paths of ions. [20] Techniques, such as electrodeposition, [19] Electrochromic displays have attracted increased attention owing to their reversible switch of multicolors. However, the external voltage requirement for triggering the color switching makes them far from an optimum energyefficient technology. The newly developed electrochromic batteries eliminate the energy consumption for coloration while they can retrieve the consumed energy for bleaching. Such features make the electrochromic battery technology the most promising technology for energy-efficient electrochromic displays. Here, a scalable method to synthesize colloidal V 3 O 7 nanoparticles is presented, which is compatible with solution-process techniques for aqueous Zn-V 3 O 7 electrochromic battery displays. The Zn-V 3 O 7 electrochromic battery display shows an ...

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“…A typical EES window consists of a cathodically active electrochromic material (e.g., transition metal oxide [7][8][9][10][11][12][13] or conducting polymer [6,14,15] ); an anodically active electrochromic material (e.g., NiO [9,11,16,17] or polyaniline (PANI) [6,10] ) or a transparent capacitive anode material (e.g., TiO 2 , [14] CeO 2 , [18] or CeO 2 /TiO 2 [8] ); and a compatible electrolyte. An interesting variant was introduced recently-a "selfpowered" EES window containing an Al foil anode, an electrochromic cathode (e.g., Prussian blue (PB) [19,20] and polypyrrole (PPy), [21] W 18 O 49 , [22] W 18 O 49 /PANI, [23] or 3-(2-naphthyl)-l-alanine/H 6 P 2 W 18 O 62 (NA/ HP 2 W 18 ) [24] ) in an aqueous electrolyte. The EES window as assembled is in the charged state: with sufficient potential difference (≈1.2 V) between the electrochromic cathode and the Al anode to drive the self-bleaching (for the PB or PPy cathode) or self-coloration (for the W 18 O 49 , W 18 O 49 /PANI, or NA/HP 2 W 18 cathode) of the window without an externally applied voltage.…”

Section: Doi: 101002/smtd201900545mentioning

confidence: 99%

Overcoming the Technical Challenges in Al Anode–Based Electrochromic Energy Storage Windows

et al. 2019

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A new variant of electrochromic energy storage (EES) windows is introduced recently by pairing an electrochromic cathode with an Al anode. Electrochromism in this case is driven by the built‐in potential difference and chemical recharging (via oxidation by O2 or H2O2) without the need for an external power source. However, the Al anode–based EES windows are adversely affected by the irreversibility of the Al anode reaction, the inconvenience of chemical recharging, and a short cycle life. An electrically rechargeable alternative based on a prelithiated Al anode and a WO3−x cathode is presented here, which not only overcomes the operational difficulties of Al anode–based EES windows, but also allows for spectrally selective modulation of visible light and near‐infrared and efficient energy recycling. This dual‐band electrochromic energy storage (DEES) window upon assembly is able to self‐colorize by its high built‐in cell voltage (≈2.59 V) without any energy input, and to recycle a large fraction of the energy consumed in the bleaching operation. The DEES window, with its impressive dual‐band electrochromic performance and low energy consumption in a round‐trip electrochromic operation, can be an energy‐saving technology for buildings.

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Bringing Hetero‐Polyacid‐Based Underwater Adhesive as Printable Cathode Coating for Self‐Powered Electrochromic Aqueous Batteries

Cited by 61 publications

References 64 publications

A chemically self-charging aqueous zinc-ion battery

A chemically self-charging aqueous zinc-ion battery

Electrochromic Battery Displays with Energy Retrieval Functions Using Solution‐Processable Colloidal Vanadium Oxide Nanoparticles

Overcoming the Technical Challenges in Al Anode–Based Electrochromic Energy Storage Windows

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