The Experts below are selected from a list of 249 Experts worldwide ranked by ideXlab platform
Huatang Yuan - One of the best experts on this subject based on the ideXlab platform.
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investigation of novel cobalt boron carbon system as negative material for Secondary Alkaline Battery
Electrochimica Acta, 2011Co-Authors: Qinghong Wang, Lifang Jiao, Qingna Huan, Wenxiu Peng, Dawei Song, Yijing Wang, Huatang YuanAbstract:Abstract A series of novel cobalt–boron–carbon systems have been successfully synthesized by a chemical reduction method with subsequent heat-treatment in the presence of various contents of glucose. The products thus obtained have been investigated as negative electrode materials in KOH aqueous solution. The as-prepared samples are characterized by XRD, ICP, TEM and BET method. It is found that the samples are composed of Co–B particles coated by carbon nanoflakes, which significantly improve their BET surface areas. Electrochemical measurements showed that the Co–B–C electrodes display high discharge capacity, excellent cycle stability and outstanding rate capability. The discharge capacity of the Co–B–C electrode reaches 430.1 mAh g −1 at the current density of 500 mA g −1 and it still remains 401.6 mAh g −1 after 100 cycles, which is attractive compared with other Co-based materials reported before. CV and XRD measurements reveal that the reversible faradic reaction between highly dispersed Co and Co(OH) 2 is dominant for the Co–B–C composites.
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Investigation of novel cobalt–boron–carbon system as negative material for Secondary Alkaline Battery
Electrochimica Acta, 2011Co-Authors: Qinghong Wang, Lifang Jiao, Qingna Huan, Wenxiu Peng, Dawei Song, Yijing Wang, Huatang YuanAbstract:Abstract A series of novel cobalt–boron–carbon systems have been successfully synthesized by a chemical reduction method with subsequent heat-treatment in the presence of various contents of glucose. The products thus obtained have been investigated as negative electrode materials in KOH aqueous solution. The as-prepared samples are characterized by XRD, ICP, TEM and BET method. It is found that the samples are composed of Co–B particles coated by carbon nanoflakes, which significantly improve their BET surface areas. Electrochemical measurements showed that the Co–B–C electrodes display high discharge capacity, excellent cycle stability and outstanding rate capability. The discharge capacity of the Co–B–C electrode reaches 430.1 mAh g −1 at the current density of 500 mA g −1 and it still remains 401.6 mAh g −1 after 100 cycles, which is attractive compared with other Co-based materials reported before. CV and XRD measurements reveal that the reversible faradic reaction between highly dispersed Co and Co(OH) 2 is dominant for the Co–B–C composites.
Qinghong Wang - One of the best experts on this subject based on the ideXlab platform.
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investigation of novel cobalt boron carbon system as negative material for Secondary Alkaline Battery
Electrochimica Acta, 2011Co-Authors: Qinghong Wang, Lifang Jiao, Qingna Huan, Wenxiu Peng, Dawei Song, Yijing Wang, Huatang YuanAbstract:Abstract A series of novel cobalt–boron–carbon systems have been successfully synthesized by a chemical reduction method with subsequent heat-treatment in the presence of various contents of glucose. The products thus obtained have been investigated as negative electrode materials in KOH aqueous solution. The as-prepared samples are characterized by XRD, ICP, TEM and BET method. It is found that the samples are composed of Co–B particles coated by carbon nanoflakes, which significantly improve their BET surface areas. Electrochemical measurements showed that the Co–B–C electrodes display high discharge capacity, excellent cycle stability and outstanding rate capability. The discharge capacity of the Co–B–C electrode reaches 430.1 mAh g −1 at the current density of 500 mA g −1 and it still remains 401.6 mAh g −1 after 100 cycles, which is attractive compared with other Co-based materials reported before. CV and XRD measurements reveal that the reversible faradic reaction between highly dispersed Co and Co(OH) 2 is dominant for the Co–B–C composites.
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Investigation of novel cobalt–boron–carbon system as negative material for Secondary Alkaline Battery
Electrochimica Acta, 2011Co-Authors: Qinghong Wang, Lifang Jiao, Qingna Huan, Wenxiu Peng, Dawei Song, Yijing Wang, Huatang YuanAbstract:Abstract A series of novel cobalt–boron–carbon systems have been successfully synthesized by a chemical reduction method with subsequent heat-treatment in the presence of various contents of glucose. The products thus obtained have been investigated as negative electrode materials in KOH aqueous solution. The as-prepared samples are characterized by XRD, ICP, TEM and BET method. It is found that the samples are composed of Co–B particles coated by carbon nanoflakes, which significantly improve their BET surface areas. Electrochemical measurements showed that the Co–B–C electrodes display high discharge capacity, excellent cycle stability and outstanding rate capability. The discharge capacity of the Co–B–C electrode reaches 430.1 mAh g −1 at the current density of 500 mA g −1 and it still remains 401.6 mAh g −1 after 100 cycles, which is attractive compared with other Co-based materials reported before. CV and XRD measurements reveal that the reversible faradic reaction between highly dispersed Co and Co(OH) 2 is dominant for the Co–B–C composites.
Xiaodong Shen - One of the best experts on this subject based on the ideXlab platform.
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synergistic effects in an ab5 co material as an anode for a Secondary Alkaline Battery
International Journal of Hydrogen Energy, 2010Co-Authors: Xiangyu Zhao, Yan Yao, Meng Yang, Yi Ding, Xiaodong ShenAbstract:Abstract The AB 5 alloy and Co powders have been mixed at various weight ratios to form AB 5 –Co composite electrodes. The discharge properties such as discharge capacity, discharge plateau, and cycling stability are investigated by charge and discharge testing using Arbin Battery testing equipment. Synergistic effects in the composite electrodes contribute to significant improvements of the discharge behavior. For instance, the composite AB 5 –25%Co electrode shows a high discharge capacity of 395.1 mAh/g, which is significantly higher than that of AB 5 or Co electrode, and good cycling stability. The discharge process is also characterized by electrochemical impedance spectroscopy. Moreover, the electrochemical discharge mechanism is discussed.
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Synergistic effects in an AB5–Co material as an anode for a Secondary Alkaline Battery
International Journal of Hydrogen Energy, 2010Co-Authors: Xiangyu Zhao, Yan Yao, Meng Yang, Yi Ding, Xiaodong ShenAbstract:Abstract The AB 5 alloy and Co powders have been mixed at various weight ratios to form AB 5 –Co composite electrodes. The discharge properties such as discharge capacity, discharge plateau, and cycling stability are investigated by charge and discharge testing using Arbin Battery testing equipment. Synergistic effects in the composite electrodes contribute to significant improvements of the discharge behavior. For instance, the composite AB 5 –25%Co electrode shows a high discharge capacity of 395.1 mAh/g, which is significantly higher than that of AB 5 or Co electrode, and good cycling stability. The discharge process is also characterized by electrochemical impedance spectroscopy. Moreover, the electrochemical discharge mechanism is discussed.
Lifang Jiao - One of the best experts on this subject based on the ideXlab platform.
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investigation of novel cobalt boron carbon system as negative material for Secondary Alkaline Battery
Electrochimica Acta, 2011Co-Authors: Qinghong Wang, Lifang Jiao, Qingna Huan, Wenxiu Peng, Dawei Song, Yijing Wang, Huatang YuanAbstract:Abstract A series of novel cobalt–boron–carbon systems have been successfully synthesized by a chemical reduction method with subsequent heat-treatment in the presence of various contents of glucose. The products thus obtained have been investigated as negative electrode materials in KOH aqueous solution. The as-prepared samples are characterized by XRD, ICP, TEM and BET method. It is found that the samples are composed of Co–B particles coated by carbon nanoflakes, which significantly improve their BET surface areas. Electrochemical measurements showed that the Co–B–C electrodes display high discharge capacity, excellent cycle stability and outstanding rate capability. The discharge capacity of the Co–B–C electrode reaches 430.1 mAh g −1 at the current density of 500 mA g −1 and it still remains 401.6 mAh g −1 after 100 cycles, which is attractive compared with other Co-based materials reported before. CV and XRD measurements reveal that the reversible faradic reaction between highly dispersed Co and Co(OH) 2 is dominant for the Co–B–C composites.
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Investigation of novel cobalt–boron–carbon system as negative material for Secondary Alkaline Battery
Electrochimica Acta, 2011Co-Authors: Qinghong Wang, Lifang Jiao, Qingna Huan, Wenxiu Peng, Dawei Song, Yijing Wang, Huatang YuanAbstract:Abstract A series of novel cobalt–boron–carbon systems have been successfully synthesized by a chemical reduction method with subsequent heat-treatment in the presence of various contents of glucose. The products thus obtained have been investigated as negative electrode materials in KOH aqueous solution. The as-prepared samples are characterized by XRD, ICP, TEM and BET method. It is found that the samples are composed of Co–B particles coated by carbon nanoflakes, which significantly improve their BET surface areas. Electrochemical measurements showed that the Co–B–C electrodes display high discharge capacity, excellent cycle stability and outstanding rate capability. The discharge capacity of the Co–B–C electrode reaches 430.1 mAh g −1 at the current density of 500 mA g −1 and it still remains 401.6 mAh g −1 after 100 cycles, which is attractive compared with other Co-based materials reported before. CV and XRD measurements reveal that the reversible faradic reaction between highly dispersed Co and Co(OH) 2 is dominant for the Co–B–C composites.
Qingna Huan - One of the best experts on this subject based on the ideXlab platform.
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investigation of novel cobalt boron carbon system as negative material for Secondary Alkaline Battery
Electrochimica Acta, 2011Co-Authors: Qinghong Wang, Lifang Jiao, Qingna Huan, Wenxiu Peng, Dawei Song, Yijing Wang, Huatang YuanAbstract:Abstract A series of novel cobalt–boron–carbon systems have been successfully synthesized by a chemical reduction method with subsequent heat-treatment in the presence of various contents of glucose. The products thus obtained have been investigated as negative electrode materials in KOH aqueous solution. The as-prepared samples are characterized by XRD, ICP, TEM and BET method. It is found that the samples are composed of Co–B particles coated by carbon nanoflakes, which significantly improve their BET surface areas. Electrochemical measurements showed that the Co–B–C electrodes display high discharge capacity, excellent cycle stability and outstanding rate capability. The discharge capacity of the Co–B–C electrode reaches 430.1 mAh g −1 at the current density of 500 mA g −1 and it still remains 401.6 mAh g −1 after 100 cycles, which is attractive compared with other Co-based materials reported before. CV and XRD measurements reveal that the reversible faradic reaction between highly dispersed Co and Co(OH) 2 is dominant for the Co–B–C composites.
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Investigation of novel cobalt–boron–carbon system as negative material for Secondary Alkaline Battery
Electrochimica Acta, 2011Co-Authors: Qinghong Wang, Lifang Jiao, Qingna Huan, Wenxiu Peng, Dawei Song, Yijing Wang, Huatang YuanAbstract:Abstract A series of novel cobalt–boron–carbon systems have been successfully synthesized by a chemical reduction method with subsequent heat-treatment in the presence of various contents of glucose. The products thus obtained have been investigated as negative electrode materials in KOH aqueous solution. The as-prepared samples are characterized by XRD, ICP, TEM and BET method. It is found that the samples are composed of Co–B particles coated by carbon nanoflakes, which significantly improve their BET surface areas. Electrochemical measurements showed that the Co–B–C electrodes display high discharge capacity, excellent cycle stability and outstanding rate capability. The discharge capacity of the Co–B–C electrode reaches 430.1 mAh g −1 at the current density of 500 mA g −1 and it still remains 401.6 mAh g −1 after 100 cycles, which is attractive compared with other Co-based materials reported before. CV and XRD measurements reveal that the reversible faradic reaction between highly dispersed Co and Co(OH) 2 is dominant for the Co–B–C composites.