Development of a Lithium-Type Advanced Energy Storage Device
Development of a Lithium-Type Advanced Energy Storage Device
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DOI：
10.1149/1.1813671
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发表时间：
2004-12
影响因子：
3.9
通讯作者：
A. Yoshino;Toshio Tsubata;Michiko Shimoyamada;H. Satake;Y. Okano;S. Mori;S. Yata
中科院分区：
文献类型：
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作者：
A. Yoshino;Toshio Tsubata;Michiko Shimoyamada;H. Satake;Y. Okano;S. Mori;S. Yata
我们开发了一种使用新型复合材料作为负极，普通活性炭作为正极的装置。该复合材料是通过对活性炭与沥青进行热处理而得到的。该复合物的结构基于X-射线衍射图案显示为无定形的，并且表面积从2200 m2/g（活性炭）降低至250 m2/g（复合物）。该装置可以以基于复合物重量的10，000 mA/g的极高电流密度放电。约2.2 kW/L的功率密度是EDLC的两倍，约20 Wh/L的能量密度是EDLC的三倍。放电容量保持其初始容量至少100，000次循环。该器件在60°C下还具有出色的存储特性。© 2004电化学学会。All rights reserved.
We have developed a device using a novel composite material as the negative electrode and ordinary activated carbon as the positive electrode. The composite material was obtained by heat-treatment of activated carbon with pitch. The structure of this composite was shown to be amorphous based on the X-ray diffraction pattern, and the surface area decreased from 2200 m2/g (activated carbon) to 250 m2/g (composite). This device can discharge at an extremely high current density of 10,000 mA/g based on the composite weight. The power density of around 2.2 kW/L was two times higher than EDLCs, and the energy density of around 20 Wh/L was three times higher. The discharge capacity maintained its initial capacity for at least 100,000 cycles. This device also had excellent storage characteristics at 60°C. © 2004 The Electrochemical Society. All rights reserved.