Ni3S2-coated metal hydride anode with high-power and long-life performance for low-temperature Ni-MH power batteries

Li, Jinchi; Zhou, Wanhai; Zhu, Ding; He, Jian; Wu, Chien-Huei; Chen, Yungui

doi:10.1016/j.cej.2019.122204

Cited by 30 publications

(8 citation statements)

References 65 publications

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“…As shown in Figure 4, the initial discharge capacity of the battery is 260 mA g −1 at a current density of 0.5 A g −1 , and the capacity retention rate is 78% compared with that at 20 °C, which is better than the previously reported value for a Ni−MH battery of 70.7%. 41 The all-boride battery retains 97% of its initial capacity after 100 cycles. The voltage platform of the charge−discharge curve is stable without significant changes during cycling (inset in Figure 4), indicating the extraordinary cycling performance of the as-constructed all-boride battery and the high stability of the electrode material at very low temperatures, which demonstrates the potential of all-boride batteries under extreme cold conditions.…”

Section: Resultsmentioning

confidence: 99%

“…In order to further study the electrochemical properties of the all-boride battery at extremely low temperatures, we performed tests at −40 °C. In previous reports, few battery systems except Ni–MH batteries can be operated at such a low temperature. , During a high-current test, the battery capacity plummeted after only a few cycles, so the test could only be run at a low current. As shown in Figure , the initial discharge capacity of the battery is 260 mA g –1 at a current density of 0.5 A g –1 , and the capacity retention rate is 78% compared with that at 20 °C, which is better than the previously reported value for a Ni–MH battery of 70.7% .…”

Section: Resultsmentioning

confidence: 99%

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New Battery with Borides as Both Anode and Cathode Materials

Zeng

Liao

et al. 2021

Energy Fuels

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Transition metal borides Co–B and Co–Ni–B are prepared by a simple chemical reduction method and used to construct a new all-boride aqueous solution battery with borides used for both the anode and cathode. This all-boride-based battery exhibits an excellent electrochemical property and extreme frost tolerance. The results of the electrochemical performance test demonstrate that the specific capacity of this all-boride battery reaches 332.4 mA h g–1 at a current density of 500 mA g–1 and is maintained at 280 mAh g–1 with a high discharge current density of 8 A g–1 as a result of the rapid electrochemical reaction kinetics and high electronic conductivity. This all-boride battery can continue to work at low temperatures (−40 °C) and exhibits good electrochemical performance; therefore, it can be used under extreme cold weather conditions. The electrode material of the all-boride battery is simple to prepare, is energy-saving, does not require special equipment or a special environment during assembly, and thus shows promise as a new energy storage device.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

New Battery with Borides as Both Anode and Cathode Materials

Zeng

Liao

et al. 2021

Energy Fuels

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“…Hydrogen (H 2 ) is a kind of valuable clean energy, showing promising applications in various fields. − However, the flammability and wide explosion limit range (4.0 to 75.6% by volume) of H 2 result in high risks in its usage, storage, and transportation . Therefore, developing hydrogen sensors for real-time and accurate detection of H 2 concentration is a necessary means for the safe use of hydrogen energy.…”

Section: Introductionmentioning

confidence: 99%

Improving Anti-Humidity Property of a SnO₂-Based Chemiresistive Hydrogen Sensor by a Breathable and Hydrophobic Fluoropolymer Coating

Tan

Liang

et al. 2022

Langmuir

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Metal-oxide-based chemiresistive hydrogen sensors exhibit high sensitivity, long-term stability, and low cost and have been extensively applied in safety monitoring of H 2 . However, the sensing performances are dramatically affected by the water vapor, resulting in reduced response value and increased response/recovery time. To improve the anti-humidity property of sensors, coating the breathable and hydrophobic membrane on the surface of the sensing film is an effective strategy. In this work, the poly[4,5-difluoro-2,2bis(trifluoromethyl)-1,3-dioxole-co-tetrafluoroethylene] (Teflon AF-2400) was dip-coated on the surface of SnO 2 in a commercial hydrogen sensor (TGS2615) as a breathable and hydrophobic membrane. For safety, He instead of H 2 was used to test the gas permeability of membranes. The Teflon membrane shows a high He permeability of up to 40,700 Barrer and an excellent He/H 2 O selectivity of 99. Moreover, Teflon shows high processability to form a defect-free coating on the rough surface of the sensing film and high chemical stability under the operando condition of the sensor. Thus, the Teflon-modified sensor possesses excellent selectivity with a value of 5, and the resistance is stable at 10,554 ± 3% Ω for 20 days in 80% RH. The modified sensor shows an improved anti-humidity property with a 75% response to 200 ppm H 2 at 80% RH and has a low coefficient of variation value of 7.23% that shows advances than other reported sensors modified by coatings. The commercially available Teflon and the simple coating technology make the strategy easily scale up and show promising applications.

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“…Pursuit of a new energy source and environmental protection has stimulated researchers to develop advanced batteries possessing high security, long life, high power and energy output, and low cost. , Featuring a prominent energy density, lithium-ion batteries are widely studied and currently dominate the market for portable electronic devices. − However, the dwindling lithium resource and the safety loophole on account of the organic electrolytes severely hinder their wide applications in large-scale energy storage . As promising candidates, aqueous Zn-based batteries are intrinsically safe, low cost, and eco-friendly, which are spotlighted in global academic research. − In particular, in alkaline electrolyte, the Zn anode is capable of having a reversible high capacity (ca.820 mAh g –1 ), low redox potential (−1.3 V vs SHE), and fast electrochemical kinetics, which endows alkaline Zn-based batteries (AZBs) potentially high energy and high power delivery. , As a result, we have witnessed their prosperity for various AZBs (e.g., Ag–Zn, Ni–Zn, MnO 2 –Zn, and Co–Zn batteries) to be developed. ,− However, their energy/power densities are severely restricted by the poor achievable capacity (<300 mAh g –1 ) and rate ability of the cathode materials (Table S1, Supporting Information).…”

Section: Introductionmentioning

confidence: 99%

Ultrafast Co_0.8Al_0.2-Layered Double-Hydroxide Nanosheets Cathode for High-Performance Co–Zn Battery

Zhou

Zhu

et al. 2020

ACS Sustainable Chem. Eng.

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Developing cathode materials of high capacity and rapid rate ability is crucial to aqueous Zn-based batteries. Herein, we demonstrate Co 0.8 Al 0.2 -layered double hydroxide (LDH) nanosheets arrays as powerful cathodes for advanced Co−Zn batteries. Benefitting from the ultrathin nanosheets morphology and the large interlayer space LDH structure, both the electrochemical activity and the OH − -diffusion kinetics are boosted. As a result, the Co 0.8 Al 0.2 -LDH exhibits outstanding electrochemical properties with a high capacity of 318 mAh g −1 and robust rate ability (74.5% of the capacity maintained at 64.8 A g −1 ). Furthermore, the Co 0.8 Al 0.2 -LDH cathode is employed to fabricate a Co 0.8 Al 0.2 -LDH//Zn battery, which achieves an impressive energy density of 392.9 Wh kg −1 (based on the total active mass), and still maintains 264 Wh kg −1 at a record high power density of 75.7 kW kg −1 together with a long lifespan (96% capacity maintained after 8000 cycles), which surpasses almost all of the currently reported Ni/Co−Zn batteries. This ultrafast and high-capacity Co 0.8 Al 0.2 -LDH cathode is promising for progressive aqueous Zn-based batteries.

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Ni3S2-coated metal hydride anode with high-power and long-life performance for low-temperature Ni-MH power batteries

Cited by 30 publications

References 65 publications

New Battery with Borides as Both Anode and Cathode Materials

New Battery with Borides as Both Anode and Cathode Materials

Improving Anti-Humidity Property of a SnO₂-Based Chemiresistive Hydrogen Sensor by a Breathable and Hydrophobic Fluoropolymer Coating

Ultrafast Co_0.8Al_0.2-Layered Double-Hydroxide Nanosheets Cathode for High-Performance Co–Zn Battery

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Ni3S2-coated metal hydride anode with high-power and long-life performance for low-temperature Ni-MH power batteries

Cited by 30 publications

References 65 publications

New Battery with Borides as Both Anode and Cathode Materials

New Battery with Borides as Both Anode and Cathode Materials

Improving Anti-Humidity Property of a SnO2-Based Chemiresistive Hydrogen Sensor by a Breathable and Hydrophobic Fluoropolymer Coating

Ultrafast Co0.8Al0.2-Layered Double-Hydroxide Nanosheets Cathode for High-Performance Co–Zn Battery

Contact Info

Product

Resources

About

Improving Anti-Humidity Property of a SnO₂-Based Chemiresistive Hydrogen Sensor by a Breathable and Hydrophobic Fluoropolymer Coating

Ultrafast Co_0.8Al_0.2-Layered Double-Hydroxide Nanosheets Cathode for High-Performance Co–Zn Battery