Photoenhanced performance of Cobalt-intercalated 2-D manganese oxide sheets for rechargeable zinc–air batteries

Mathur, Asha; Kaushik, Ravinder; Halder, Aditi

doi:10.1016/j.mtener.2020.100612

Cited by 16 publications

(20 citation statements)

References 48 publications

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“…[ 91 ] Mathur et al adopted a δ‐MnO 2 structure material with in‐plane and inter‐plane Co doping, which endowed it with bifunctional catalytic activity for oxygen reduction and oxygen evolution reactions (Figure 6d). [ 92 ] Under light conditions, the Co‐doped MnO 2 cathode can increase the charge–discharge voltage difference by 2.38% and the round‐trip efficiency by 16.26% (Figure 6e). [ 92 ]…”

Section: Methods To Improve the Efficiency Of Pecmentioning

confidence: 99%

“…[ 92 ] Under light conditions, the Co‐doped MnO 2 cathode can increase the charge–discharge voltage difference by 2.38% and the round‐trip efficiency by 16.26% (Figure 6e). [ 92 ]…”

Section: Methods To Improve the Efficiency Of Pecmentioning

confidence: 99%

“…[91] Mathur et al adopted a δ-MnO 2 structure material with in-plane and inter-plane Co doping, which endowed it with bifunctional catalytic activity for oxygen reduction and oxygen evolution reactions (Figure 6d). [92] Under light conditions, the Co-doped MnO 2 cathode can increase the charge-discharge voltage difference by 2.38% and the roundtrip efficiency by 16.26% (Figure 6e). [92] In the case of doped elements with wide bandgap photoelectrode, although the light absorption spectral range of wide bandgap semiconductor is extended from ultraviolet to visible, the absorption coefficient in visible region is very low.…”

Section: Enhanced Light Absorptionmentioning

confidence: 97%

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Integrated Photovoltaic Charging and Energy Storage Systems: Mechanism, Optimization, and Future

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As an emerging solar energy utilization technology, solar redox batteries (SPRBs) combine the superior advantages of photoelectrochemical (PEC) devices and redox batteries and are considered as alternative candidates for large‐scale solar energy capture, conversion, and storage. In this review, a systematic summary from three aspects, including: dye sensitizers, PEC properties, and photoelectronic integrated systems, based on the characteristics of rechargeable batteries and the advantages of photovoltaic technology, is presented. The matching problem of high‐performance dye sensitizers, strategies to improve the performance of photoelectrode PEC, and the working mechanism and structure design of multienergy photoelectronic integrated devices are mainly introduced and analyzed. In particular, the devices and improvement strategies of high‐performance electrode materials are analyzed from the perspective of different photoelectronic integrated devices (liquid‐based and solid‐state‐based). Finally, future perspectives are provided for further improving the performance of SPRBs. This work will open up new prospects for the development of high‐efficiency photoelectronic integrated batteries.

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Section: Methods To Improve the Efficiency Of Pecmentioning

confidence: 99%

“…[ 92 ] Under light conditions, the Co‐doped MnO 2 cathode can increase the charge–discharge voltage difference by 2.38% and the round‐trip efficiency by 16.26% (Figure 6e). [ 92 ]…”

Section: Methods To Improve the Efficiency Of Pecmentioning

confidence: 99%

Section: Enhanced Light Absorptionmentioning

confidence: 97%

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Integrated Photovoltaic Charging and Energy Storage Systems: Mechanism, Optimization, and Future

Wang

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et al. 2022

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“…The prominent peak at 563 cm –1 is ascribed to in-plane Mn–O stretching. The other two peaks stem from out-of-plane Mn–O stretching vibrations . The Raman spectra demonstrate that Mn 3+ and Mn 4+ coexist in the MnO x .…”

mentioning

confidence: 88%

“…The other two peaks stem from out-of-plane Mn−O stretching vibrations. 42 The Raman spectra demonstrate that Mn 3+ and Mn 4+ coexist in the MnO x . 43 X-ray diffraction results (Figure S17) reveal that the MnO x is amorphous, as a broad peak is identified.…”

mentioning

confidence: 93%

Battery-Everywhere Design Based on a Cathodeless Configuration with High Sustainability and Energy Density

et al. 2021

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High energy density, recyclability, and manufacturing flexibility are valuable assets for batteries to drive the Internet of Things in a distributed, adaptive, and sustainable way. Aqueous zinc batteries are environmentally benign and offer more flexibility in manufacturing processes but are plagued by limited energy densities because of an operating voltage below 2 V. Here, we demonstrate a cathodeless battery with decoupled reactions successfully raising the voltage up to 2 V. The decoupled hydrogel electrolyte design inhibits cation crossover without the use of an ion-selective membrane and suppresses oxygen evolution upon bonding water to hydrogen sulfate anions through hydrogen bonding, allowing for high energy output and a long lifespan. The elimination of electrode composite slurries transforms everyday objects into batteries. Thirty minutes of wireless charging drives a multifunction electronic device for more than a day. Hydrogel electrolytes can be easily regenerated by resoaking, inspiring a new generation of sustainable energy storage devices.

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Unique Step‐Scheme Heterojunction Photoelectrodes for Dual‐Utilization of Light and Chemical Neutralization Energy in Switchable Dual‐Mode Batteries

Wang

Yang

et al. 2022

Adv Funct Materials

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Here, a unique step‐scheme (S‐scheme) heterojunction array involving C4N and aligned TiO2 nanorods, namely C4N@TiO2NR, is explored as an advanced photoelectrode for developing an innovative acid–base/Zn–air hybrid cell capable of harvesting light and chemical neutralization energy (CNE) in one integrated system to boost the charge/discharge performance. The properly staggered band arrangement with a built‐in electric field in C4N@TiO2NR induces an S‐type charge migration path to ensure superior redox ability of photogenerated carriers with efficient spatial separation. This coupled with the structural merits of 3D hierarchical arrays enables remarkable photocurrent response and facilitates oxygen evolution kinetics upon irradiation. Paring this heterojunction photoelectrode with an alkaline Zn electrode and an acidic air electrode produces a light and CNE dual‐assisted cell with two switchable modes of light‐assisted acid‐base/air battery (LABAB) and acid‐base battery (LAB). By capturing light during charge and CNE during discharge, LABAB breaks the limit of the equilibrium potential (1.65 V) of conventional Zn–air batteries (ZABs) to deliver impressive charge/discharge voltages of 0.43/2.02 and 0.87/1.86 V at 0.1 and 10 mA cm−2, superior to all reported ZABs. respectively. When LABAB is switched to LAB, it can harvest light and CNE simultaneously to afford markedly increased output voltage relative to common acid–base batteries.

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Photoenhanced performance of Cobalt-intercalated 2-D manganese oxide sheets for rechargeable zinc–air batteries

Cited by 16 publications

References 48 publications

Integrated Photovoltaic Charging and Energy Storage Systems: Mechanism, Optimization, and Future

Integrated Photovoltaic Charging and Energy Storage Systems: Mechanism, Optimization, and Future

Battery-Everywhere Design Based on a Cathodeless Configuration with High Sustainability and Energy Density

Unique Step‐Scheme Heterojunction Photoelectrodes for Dual‐Utilization of Light and Chemical Neutralization Energy in Switchable Dual‐Mode Batteries

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