公开(公告)号：WO2004010520A1

公开(公告)日：2004-01-29

申请号：PCT/US2003/022741

申请日：2003-07-22

Applicant: NANOGRAM CORPORATION

Inventor： GHANTOUS, Dania, I. ,  PINOLI, Allison, A.

IPC: H01M4/34

CPC classification number: H01M4/06 ,  H01M4/0435 ,  H01M4/0471 ,  H01M4/1391 ,  H01M4/1397 ,  H01M4/382 ,  H01M4/485 ,  H01M4/54 ,  H01M4/5825 ,  H01M6/16 ,  H01M6/5088 ,  H01M10/052 ,  H01M2004/021 ,  H01M2010/4292 ,  H01M2300/004

Abstract: Improved batteries described herein generally comprise an electrolyte having lithium ions and a cathode comprising submicron metal vanadium oxide particles. In some embodiments, the battery demonstrate an accessible current capacity of a least about 220 mAh/g when pulsed in groups of four constant energy pulses at a current density of 30 mA/cm 2 to deliver 50 Joules per pulse. The four pulses of a pulse train are separated by 15 seconds of rest between each pulse, and there are 6 days between pulse groups, upon discharge down to a pulse discharge voltage of 2 V. In further embodiments, the batteries have an average internal electrical resistance of no more than 0.2 Ohms at a current density of at least about 30 mA/cm 2 . Furthermore, the batteries can have a current capability of at least about 0.4 amps per cubic centimeter battery volume. Due to the improved discharge performance, the batteries can exhibit no significant voltage delay throughout the life of the battery as demonstrated in a three month accelerated discharge test.

Abstract translation: 本文所述的改进的电池通常包括具有锂离子的电解质和包含亚微米金属氧化钒颗粒的阴极。 在一些实施例中，当在30mA / cm 2的电流密度下以四个恒定能量脉冲组脉冲时，电池显示出至少约220mAh / g的可访问电流容量，以便每脉冲输送50焦耳。 脉冲序列的四个脉冲在每个脉冲之间分开15秒钟，并且在放电到2V的脉冲放电电压之后脉冲组之间有6天。在另外的实施例中，电池具有平均内部电 在至少约30mA / cm 2的电流密度下电阻不超过0.2欧姆。 此外，电池可以具有至少约0.4A / cm 3电池体积的电流能力。 由于放电性能的改善，在三个月的加速放电测试中证实，电池在整个电池寿命期间都不会显示出显着的电压延迟。

公开(公告)号：EP1543572A1

公开(公告)日：2005-06-22

申请号：EP03765837.4

申请日：2003-07-22

Applicant: NanoGram Corporation

Inventor： GHANTOUS, Dania, I. ,  PINOLI, Allison, A.

IPC: H01M4/34 ,  H01M4/46

CPC classification number: H01M4/06 ,  H01M4/0435 ,  H01M4/0471 ,  H01M4/1391 ,  H01M4/1397 ,  H01M4/382 ,  H01M4/485 ,  H01M4/54 ,  H01M4/5825 ,  H01M6/16 ,  H01M6/5088 ,  H01M10/052 ,  H01M2004/021 ,  H01M2010/4292 ,  H01M2300/004

Abstract: Improved batteries described herein generally comprise an electrolyte having lithium ions and a cathode comprising submicron metal vanadium oxide particles. In some embodiments, the battery demonstrate an accessible current capacity of a least about 220 mAh/g when pulsed in groups of four constant energy pulses at a current density of 30 mA/cm2 to deliver 50 Joules per pulse. The four pulses of a pulse train are separated by 15 seconds of rest between each pulse, and there are 6 days between pulse groups, upon discharge down to a pulse discharge voltage of 2 V. In further embodiments, the batteries have an average internal electrical resistance of no more than 0.2 Ohms at a current density of at least about 30 mA/cm2. Furthermore, the batteries can have a current capability of at least about 0.4 amps per cubic centimeter battery volume. Due to the improved discharge performance, the batteries can exhibit no significant voltage delay throughout the life of the battery as demonstrated in a three month accelerated discharge test.