中文摘要：

鉴于能源短缺和环境问题,纳米能源科技备受世界各国关注。本文将纳米能源技术划分为八个领域,基于德温特专利数据库收集了1991-2015年间的纳米能源各领域的专利数据,采用专利计量的方法进行分析,探讨纳米能源各技术领域技术的总体分布、结构分布、时间序列分布、地域分布以及技术热点等。研究发现：纳米能源各领域的技术活动呈现不均衡性发展;中国、美国、日本和韩国是纳米能源各领域技术活动的强国;各领域技术能力分布存在差异且技术热点不同。在未来的发展中,中国应巩固和增强现有的技术优势,实现各领域均衡协调发展。

英文摘要：

Given energy shortage and environmental issues, nano - energy has attracted many attentions worldwide. This article divides nano - energy technology into eight sub - fields and explores the overall distribution, structural distribution, temporal distribution, geographical distribution and hotspot technologies of each nano - energy sub - field using patentometric method based on nano - energy patent data during 1991 - 2015 collected from Derwent Innovation Index database. We find that technological activities in each subfield present imbalance development, and China, USA, Japan and South Korea are technological leaders, but there are differences in technological capacities and hotspot technologies in each field. China needs to consolidate and enhance existing technological advantages to achieve balanced progress in nano - energy field in the future.