關(guān)鍵詞:反鐵電技術(shù);專利;全球;發(fā)展態(tài)勢
中圖分類號:G306 文獻(xiàn)標(biāo)志碼:A 文章編號:1003-5168(2025)08-0132-07
DOI: 10.19968/j.cnki.hnkj.1003-5168.2025.08.025
Abstract: [Purposes] This paper aims to sort out the patent development trend of global antiferroelectric technology,and provide reference forfurther research in this field.[Methods] This paper uses the Incopat database platform to gather patent statistics of global antiferroelectric technology,and analyzes patent application trends,technology source and target countries,major applicants,patent technology fields, and operational status and so on.[Findings] Foreign research and innovation in the field started earlier, with enterprises as the main focus; China started relatively late,mainly led by universities and research institutes,with a focus on antiferroelectric ceramic material technology.[Conclusions] China should continue to strengthen the research of antiferroelectric materials,enhance industry-university-institute cooperation and open licensing conversion,promote industrial applications,and atach importance to overseas patent layout and intellectual property protection.
Keywords:antiferroelectric technology;patent; global;development trend
0 引言
鐵電材料是一類重要的功能材料,近年來被國內(nèi)外專家學(xué)者廣泛研究。作為與鐵電材料密切相關(guān)的一類材料,反鐵電材料因具有優(yōu)秀的儲能和應(yīng)變等性能,逐漸成為材料科學(xué)領(lǐng)域研究的前沿和熱點(diǎn)。
反鐵電性概念最早由Kittel于1951年提出,他基于宏觀唯象理論,不僅預(yù)言了反鐵電體的存在,還闡述了反鐵電體應(yīng)具備的基本特征[1]。反鐵電體的判定關(guān)鍵在于其呈現(xiàn)雙電滯回線特性,并且在反鐵電相變-鐵電相變過程中,會發(fā)生顯著的應(yīng)變。當(dāng)施加的電場強(qiáng)度超過反鐵電相-鐵電相的轉(zhuǎn)變閥值時(shí),材料會轉(zhuǎn)變?yōu)殍F電相;而當(dāng)移除外加電場后,材料又會恢復(fù)至反鐵電相。相較于線性電介質(zhì)和鐵電材料,反鐵電材料在能量存儲和釋放方面表現(xiàn)出更高的效率[2],因此被視為高密度儲能電容器的理想材料。此外,反鐵電材料在提高能源利用效率、儲存可再生能源方面具有顯著優(yōu)勢,其應(yīng)用潛力巨大,涉及航空航天、太陽能利用、工業(yè)余熱回收、家用電器等多個(gè)領(lǐng)域。同時(shí),反鐵電材料在智能傳感和制動系統(tǒng)中也扮演著關(guān)鍵角色[3]
專利作為知識產(chǎn)權(quán)保護(hù)的一種形式,是技術(shù)創(chuàng)新的重要標(biāo)志,在很大程度上代表著一個(gè)國家或地區(qū)的技術(shù)水平和潛在技術(shù)競爭力[4]。通過對專利信息的分析研判,可以洞悉該國家或地區(qū)的技術(shù)現(xiàn)狀和發(fā)展態(tài)勢,為該領(lǐng)域的后續(xù)研究提供參考和決策依據(jù)。……