华为近日宣布了其在锂离子电池研究方面的一个重大突破--公布了全球首个能够耐高温、长寿命的石墨烯锂离子电池。
Huawei announced a major breakthrough in its research into Li-ion batteries, unveiling the world's first long-lifespan graphene-assisted Li-ion battery able to withstand high temperatures.
华为中央研究院瓦特实验室是在日本举行的第57届电池讨论会上宣布的这一消息。
The announcement was made by Watt Laboratory, an organization under Huawei's Central Research Institute, at the 57th Battery Symposium held in Japan.
华为的研究成果显示，新款石墨烯耐高温技术能够使锂离子电池在60℃的环境下正常运作，这比当前的上限要高出10℃。
Huawei's research results show that new graphene-based heat-resistant technologies allow Li-ion batteries to remain functional in a 60°C environment, a temperature 10°C higher than the existing upper limit.
此石墨烯锂离子电池的寿命还将是普通锂电池的两倍。
The lifespan of the graphene-assisted Li-ion batteries will also be twice as long as ordinary Li-ion batteries.
瓦特实验室首席科学家李阳兴博士指出，石墨烯高温锂离子电池的突破来自三个方面。
Dr. Yangxing Li, Chief Scientist at Watt Laboratory, pointed out that three technologies contributed to the breakthrough in the graphene-assisted high-temperature Li-ion battery.
首先，在电解液中加入特殊添加剂，除去痕量水，避免电解液的高温分解。第二，电池正极选用改性的大单晶三元材料，提高材料的热稳定性。第三，采用新型材料石墨烯，可实现锂离子电池与环境间的高效散热。
First, a special additive in the electrolytes can remove trace water and prevent the electrolytes from evaporating in high temperatures. Second, modified large-crystal NMC materials are used for the cathode, improving the thermal stability of the cathode powder. Third, graphene allows for more efficient cooling of the Li-ion battery.
李阳兴博士表示：“高温环境下的充放电测试表明，在同等工作参数下，该石墨烯基高温锂离子电池的温升比普通锂离子电池降低了5℃。”
Dr. Li said, "We have performed charging and discharging tests in a high-temperature environment. The tests show that when working parameters are the same, the graphene-assisted high-temperature Li-ion battery is 5°C cooler than ordinary Li-ion batteries."
“在60°C高温循环2000次，其容量保持率仍超过70%；60℃高温存储200天，容量损失小于13%。”
"Over 70% of the graphene battery's capacity is left after it is recharged 2,000 times at a temperature of 60°C. Less than 13% of its capacity is lost after being kept in a 60°C environment for 200 days."