Abstract:The key role played by carbon dioxide in global temperature cycles has stimulated constant research attention on carbon capture and storage. Among the various options, lithium-carbon dioxide batteries are intriguing, not only for the transformation of waste carbon dioxide to value-added products, but also for the storage of electricity from renewable power resources and balancing the carbon cycle. The development of this system is still in its early stages and faces tremendous hurdles caused by the introductio… Show more
“…Compared with pioneering works (Table S1), the bifunctional BiPdC cathode successfully achieves CO 2 –HCOOH interconversion and realizes long-time reversible reactions toward CO 2 –HCOOH. In terms of Zn–CO 2 battery discharging performance, many pioneering works of literature display a maximum power density below 0.8 mW cm –2 due to the limited discharging current and voltage causing undesired exporting power density for practical application. ,,− In fact, as a newly viable technology, the rechargeable Zn–CO 2 batteries combine sustainable electricity supplement with value-added chemical production simultaneously, revealing both electrical output and CO 2 fixation applications. ,− …”
Exploring reversible Zn–CO2 batteries holds great
promising potential for future CO2 fixation and energy
supply. Herein, the bifunctional PdBi alloy anchoring on carbon substrate
(BiPdC) is proposed for simultaneously catalyzing carbon dioxide reduction
reaction (CO2RR) and formic acid oxidation (FAO). The synergistic
effect between Pd and Bi overcomes the sluggish kinetics of CO2RR and FAO, causing the HCOOH Faraday efficiency (FEHCOOH) of 63.4% and 6.2 mA cm–2 current density for
FAO. Benefiting from the CO2–HCOOH interconversion,
the homemade reversible Zn–CO2 battery exhibits
the optimal 52.6% FEHCOOH and 1.1 V voltage gap within
45 h of cycling.
“…Compared with pioneering works (Table S1), the bifunctional BiPdC cathode successfully achieves CO 2 –HCOOH interconversion and realizes long-time reversible reactions toward CO 2 –HCOOH. In terms of Zn–CO 2 battery discharging performance, many pioneering works of literature display a maximum power density below 0.8 mW cm –2 due to the limited discharging current and voltage causing undesired exporting power density for practical application. ,,− In fact, as a newly viable technology, the rechargeable Zn–CO 2 batteries combine sustainable electricity supplement with value-added chemical production simultaneously, revealing both electrical output and CO 2 fixation applications. ,− …”
Exploring reversible Zn–CO2 batteries holds great
promising potential for future CO2 fixation and energy
supply. Herein, the bifunctional PdBi alloy anchoring on carbon substrate
(BiPdC) is proposed for simultaneously catalyzing carbon dioxide reduction
reaction (CO2RR) and formic acid oxidation (FAO). The synergistic
effect between Pd and Bi overcomes the sluggish kinetics of CO2RR and FAO, causing the HCOOH Faraday efficiency (FEHCOOH) of 63.4% and 6.2 mA cm–2 current density for
FAO. Benefiting from the CO2–HCOOH interconversion,
the homemade reversible Zn–CO2 battery exhibits
the optimal 52.6% FEHCOOH and 1.1 V voltage gap within
45 h of cycling.
“…It is obvious that R EEI and R CT at open circuit voltage are larger than those after circulation. This may be due to the high reactivity of layered oxides exposed to wet air and the passivation surface layer composed of carbonate species produced by electrolyte decomposition during electrode preparation. − …”
Low-cost P2-type Cu/Fe/Mn-based layered oxide is considered a promising cathode material of sodium ion batteries (SIBs) for large-scale application. However, the abnormal initial Coulombic efficiency (ICE) of a P2-type Cu/Fe/Mn-based cathode is always much higher than 100% due to the difference of Na + extraction and insertion content in the first cycle, which becomes an obstacle to its commercialization. Herein, we reveal that increasing the charge capacity contribution of Mn 3+/4+ from an open circuit voltage to a high cutoff voltage by adjusting the initial valence state of Mn ions can effectively solve this problem. The optimized P2type Na 0.85 Cu 0.1 Fe 0.25 Mn 0.65 O 2 cathode demonstrates a high energy density of 452 Wh kg −1 and an ICE of 100.9%. This work provides a regulated strategy for optimizing ICE in the Na-defective layered oxides cathode in SIBs.
“…BP has been investigated as an anode material for metal-ion batteries owing to its higher theoretical capacities of 2596 mA h g À1 for Li + storage (LIBs) and 2600 mA h g À1 for Na + batteries (NIBs), etc. 113,114 It is few times higher than the commonly used graphite, and a large inter-layer spacing (0.53 nm) allows the easier intercalation and de-intercalation of different-sized ions compared to graphene. BP also possesses acceptable density (2.69 g cm À3 ), which is essential for light batteries, sufficient charge/discharge potential scales, and the quick kinetics of electrode process.…”
Section: Bp Nanohybrids For Li/na/k-ion Storagementioning
Black phosphorus (BP) has many unique properties including layer-dependent bandgap, high carrier mobility, large on-off current ratios, and distinctive anisotropy, making it suitable for nanoelectronic and optoelectronic devices. To overcome...
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