Opportunities and challenges for aqueous metal-proton batteries

Zhou, Limin; Liu, Luojia; Hao, Zhimeng; Yan, Zhenhua; Yu, Xue‐Feng; Chu, Paul K.; Zhang, Kai; Chen, Jun

doi:10.1016/j.matt.2021.01.022

Cited by 70 publications

(40 citation statements)

References 73 publications

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“…A rechargeable aqueous battery with various cationic charge carriers is proposed to meet the above requirements, including monovalent ions (H + , Li + , K + , and Na + ) and multivalent ions (Zn 2+ , Ca 2+ , Mg 2+ , and Al 3+ ). [ 1 , 2 , 3 , 4 ] Although metal‐ion rechargeable batteries possess a high capacity and excellent stability, the ion transport significantly impeded the realization of instantaneous output due to the large ionic radius and strong electrostatic interactions. [ 5 , 6 ] Rechargeable aqueous proton batteries based on the proton uptake/removal mechanism are promising to overcome the ion‐diffusion kinetics limit.…”

Section: Introductionmentioning

confidence: 99%

Bioinspired Catechol‐Grafting PEDOT Cathode for an All‐Polymer Aqueous Proton Battery with High Voltage and Outstanding Rate Capacity

et al. 2021

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Aqueous all-polymer proton batteries (APPBs) consisting of redox-active polymer electrodes are considered safe and clean renewable energy storage sources. However, there remain formidable challenges for APPBs to withstand a high current rate while maximizing high cell output voltage within a narrow electrochemical window of aqueous electrolytes. Here, a capacitive-type polymer cathode material is designed by grafting poly(3,4-ethylenedioxythiophene) (PEDOT) with bioinspired redox-active catechol pendants, which delivers high redox potential (0.60 V vs Ag/AgCl) and remarkable rate capability. The pseudocapacitive-dominated proton storage mechanism illustrated by the density functional theory (DFT) calculation and electrochemical kinetics analysis is favorable for delivering fast charge/discharge rates. Coupled with a diffusion-type anthraquinone-based polymer anode, the APPB offers a high cell voltage of 0.72 V, outstanding rate capability (64.8% capacity retention from 0.5 to 25 A g −1 ), and cycling stability (80% capacity retention over 1000 cycles at 2 A g −1 ), which is superior to the state-of-the-art all-organic proton batteries. This strategy and insight provided by DFT and ex situ characterizations offer a new perspective on the delicate design of polymer electrode patterns for high-performance APPBs.

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Section: Introductionmentioning

confidence: 99%

Bioinspired Catechol‐Grafting PEDOT Cathode for an All‐Polymer Aqueous Proton Battery with High Voltage and Outstanding Rate Capacity

et al. 2021

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“…[9,17,18] Moreover, benefited from Grotthuss mechanism, protons in aqueous electrolytes and in electrode materials would exhibit high ionic conductivity, facilitating the reaction kinetics and rate capability. [19][20][21] Up to now, metal oxides, prussian blue analogues (PBA), and organic materials have been explored as cathode materials of proton batteries. Gogotsi et al reported the proton-intercalation chemistry in MnO 2 based on surface reactions.…”

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confidence: 99%

Suppressed Dissolution and Enhanced Desolvation in Core–Shell MoO₃@TiO₂ Nanorods as a High‐Rate and Long‐Life Anode Material for Proton Batteries

Wang

Zhao

Song

et al. 2022

Advanced Energy Materials

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of renewable energies need them to couple with energy storage devices. [1][2][3][4] Aqueous batteries stand out from many types of batteries, due to their intrinsic safe, low material costs, and facile manufacturing as well. [5][6][7] One of the typical examples is lead-acid batteries that have been commercialized and adopted in many fields. [8][9][10] However, the strong corrosion on cell components caused by highly concentrated acid, the unsatisfactory cycle life, and the high toxicity of Pb to organisms greatly limit the applications of lead-acid batteries. [10][11][12] Hence, aqueous metal-ion batteries based on alkali ions, alkaline-earth metal ions, and Zn 2+ are considered intensively to address these concerns. [13][14][15][16] However, their large ionic radii are very harmful to rate capability. Compared to these ions, protons as the charge carriers have the unique advantages, such as a small ion size, a low molar mass, and a high abundance in nature. [9,17,18] Moreover, benefited from Grotthuss mechanism, protons in aqueous electrolytes and in electrode materials would exhibit high ionic conductivity, facilitating the reaction kinetics and rate capability. [19][20][21] Up to now, metal oxides, prussian blue analogues (PBA), and organic materials have been explored as cathode materials of proton batteries. Gogotsi et al. reported the proton-intercalation chemistry in MnO 2 based on surface reactions. [22] Hu et al. [23] found that RuO 2 •xH 2 O nanotubes had a specific capacitance of 1300 F g −1 related to proton insertion/extraction. Ji et al. [20] demonstrated that one of Turnbull's blue, in which protons were transferred via Grotthuss mechanism, presented extraordinary rate performances up to 4000 C (380 A g −1 , 508 mA cm −2 ) and ultralong cycling about 0.73 million cycles. Compared with the case of cathode materials, the anode materials are rarely reported. [24][25][26][27] MoO 3 as one of the anode materials has promising perspectives, due to its high capacity, low cost, and layer structure. Yan and co-workers [25] prepared MoO 3 by calcining MoS 2 nanosheets in air, which showed a capacity of 152 mAh g −1 at 5 C in 1 m H 2 SO 4 . The capacity, however, went down to ≈68% of the initial data only after 100 cycles at 10 C or ≈67% at 50 C. It was attributed to the dissolution of MoO 3 and the formation of polyoxometalate, resulting in the capacity fading. Thus, Zhao et al. [26] used highly concentrated H 2 SO 4 (6 m) to inhibit the detrimental dissolution of MoO 3 . Although cycling stability Rechargeable proton batteries are attractive, because protons as a charge carrier have a small ionic radius, a lightest mass, and a high abundance on Earth. MoO 3 , as one of the promising anode materials in rechargeable proton batteries, suffers from the severe dissolution in acidic electrolytes upon cycling.Here, an ultrathin TiO 2 shell is coated on MoO 3 nanorods to suppress the detrimental dissolution during cycles. TiO 2 also lowers the desolvation energy of hydrated protons, promoting the reaction kinetics...

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“…Moreover, the ionic conductivity of aqueous electrolytes is usually orders of magnitude higher than for the organic electrolytes, which enables fast electrochemical reactions during processing. [ 8–11 ] Consequently, the aqueous‐based energy storage technologies are attracting more and more attention worldwide in recent years.…”

Section: Introductionmentioning

confidence: 99%

The Emerging Electrochemical Activation Tactic for Aqueous Energy Storage: Fundamentals, Applications, and Future

Peng

Zhang

Wang

et al. 2022

Adv Funct Materials

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The exploration of facile, low‐cost, and universal synthetic strategies for high‐performance aqueous energy storage is extremely urgent. The electrochemical activation tactic is an emerging synthetic technique that can turn inert or weakly active substances into highly active materials for aqueous energy storage via in situ or ex situ electrochemical treatment, which is receiving increasing attention due to its advantages of facile operation, variable control, high efficiency, flexibility, and wide applicability. This review first discusses the definition and general implementing methods of the electrochemical activation tactic, as well as the fundamental activation mechanisms, and then summarizes its applications in various aqueous systems, including rechargeable batteries and electrochemical capacitors with different charge carriers. The remaining challenges, potential solutions, and further perspectives are discussed finally. It is believed that this review will provide a timely summary and new inspiration for cutting‐edge research on advanced aqueous energy storage devices.

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Opportunities and challenges for aqueous metal-proton batteries

Cited by 70 publications

References 73 publications

Bioinspired Catechol‐Grafting PEDOT Cathode for an All‐Polymer Aqueous Proton Battery with High Voltage and Outstanding Rate Capacity

Bioinspired Catechol‐Grafting PEDOT Cathode for an All‐Polymer Aqueous Proton Battery with High Voltage and Outstanding Rate Capacity

Suppressed Dissolution and Enhanced Desolvation in Core–Shell MoO₃@TiO₂ Nanorods as a High‐Rate and Long‐Life Anode Material for Proton Batteries

The Emerging Electrochemical Activation Tactic for Aqueous Energy Storage: Fundamentals, Applications, and Future

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Opportunities and challenges for aqueous metal-proton batteries

Cited by 70 publications

References 73 publications

Bioinspired Catechol‐Grafting PEDOT Cathode for an All‐Polymer Aqueous Proton Battery with High Voltage and Outstanding Rate Capacity

Bioinspired Catechol‐Grafting PEDOT Cathode for an All‐Polymer Aqueous Proton Battery with High Voltage and Outstanding Rate Capacity

Suppressed Dissolution and Enhanced Desolvation in Core–Shell MoO3@TiO2 Nanorods as a High‐Rate and Long‐Life Anode Material for Proton Batteries

The Emerging Electrochemical Activation Tactic for Aqueous Energy Storage: Fundamentals, Applications, and Future

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Suppressed Dissolution and Enhanced Desolvation in Core–Shell MoO₃@TiO₂ Nanorods as a High‐Rate and Long‐Life Anode Material for Proton Batteries