나트륨 이온 배터리는 나트륨 이온을 다른 이온으로 대체하여 에너지를 저장하는 전기화학 전지입니다. 리튬 나트륨은 충전 및 방전 주기 동안 음극과 양극 사이를 오가는 전하 운반체로서, 리튬 이온과 유사한 메커니즘으로 삽입 및 추출 화학 반응을 통해 작동하지만, 나트륨의 더 큰 이온 반경, 더 낮은 환원 전위, 그리고 훨씬 더 풍부한 지각 매장량에 의해 좌우됩니다.
음극 소재 기술은 크게 세 가지 주요 계열로 나뉩니다.
- 층상 전이 금속 산화물
- 프러시안 블루 유사품
- NASICON형 인산염 및 황산염을 포함하는 다음이온 화합물
각각은 특정 용량, 전압 평탄도, 반복적인 나트륨화에 따른 구조적 안정성 및 합성 비용 측면에서 뚜렷한 장단점을 나타내며, 어떤 단일 양극 화학 물질도 리튬 이온 시장에서 NMC와 LFP가 차지하는 것과 같은 시장 점유율을 확보하지 못했습니다.
양극 측면에서 흑연은 나트륨 삽입 능력이 매우 미미하여 부적합하며, 현재 실용적인 표준으로 바이오매스 또는 수지 전구체에서 유래한 경질 탄소에 대한 연구가 진행되고 있습니다. 나트륨 금속 양극은 더 높은 에너지를 제공하지만 덴드라이트 생성이 용이한 새로운 연구 분야입니다. 전해질 조성(에테르 또는 탄산염 용매에 용해된 NaPF6 또는 NaClO4 염, 이온성 액체, 또는 새롭게 개발되고 있는 고체 나트륨 전도체)은 초기 사이클 쿨롱 효율, 속도 성능 및 시간 경과에 따른 노화를 좌우하는 고체 전해질 계면 화학을 결정하는 데 매우 중요합니다.
아래에 색인된 논문 및 특허는 음극 및 양극 재료 합성, 전해질 엔지니어링, SEI 특성 분석, 셀 형식 설계, 형성 프로토콜 최적화 및 시스템 수준의 기술 경제성 모델링을 다룹니다.
본 자료는 전 세계 과학 온라인 저널에 게재된 나트륨 이온 배터리 관련 영문 논문 및 특허를 엄선하여 정리한 최신 자료입니다. 나트륨 이온 배터리, Na-이온 셀, 나트륨 이온 음극, 층상 산화물 음극 나트륨, 프러시안 블루 유사 음극, 폴리아니온 음극 나트륨, NASICON 음극, 경질 탄소 양극 나트륨, 연질 탄소 양극 나트륨, 나트륨 금속 양극, 나트륨 이온 전해질, 에테르계 전해질 나트륨, 나트륨염 전해질, NaPF6 전해질, 나트륨 이온, 고체 전해질, 나트륨 이온 SEI 층 등의 키워드를 중심으로 분류 및 정리했습니다.
All-solid-state battery
Patent published on the 2026-05-28 in WO under Ref WO2026111067 by SAMSUNG ELECTRO MECH CO LTD [KR] (Kim Dongwon [kr], Kim Taehoon [kr], Keum Donghoon [kr], Kim Junhyeon [kr], Kim Han [kr])
Abstract: Provided is an all-solid-state battery including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer disposed between the positive electrode layer and the negative electrode layer. The positive electrode layer includes a positive electrode active material comprising a core containing a lithium metal oxide and a surface layer formed on at least part of the core surface. The surface layer includes a first material containing at least one transition metal selected [...]
Our summary: The all-solid-state battery consists of a positive electrode layer, a negative electrode layer, and a solid electrolyte layer. The positive electrode includes a core of lithium metal oxide and a surface layer with transition metals. The surface layer also contains metals such as magnesium, aluminum, and titanium.
all-solid-state battery, solid electrolyte, positive electrode, lithium metal oxide
Patent
All-solid-state battery and method of manufacturing the same
Patent published on the 2026-05-28 in WO under Ref WO2026111063 by SAMSUNG ELECTRO MECH CO LTD [KR] (Kim Dongwon [kr], Kim Nahyeon [kr], Kim Namgyu [kr], Lee Wonyoung [kr], Kim Han [kr])
Abstract: The present disclosure relates to an all-solid-state battery and a method of manufacturing the same, including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer stacked between the positive electrode layer and the negative electrode layer, wherein the positive electrode layer includes a positive electrode current collecting layer including a current collecting material and a first positive electrode active material; a first positive electrode active material l[...]
Our summary: The disclosure presents an all-solid-state battery design with a positive electrode layer, a negative electrode layer, and a solid electrolyte layer. It details the structure of the positive electrode layer, which includes a current collecting layer and two active material layers. The method of manufacturing the battery is also described.
all-solid-state battery, solid electrolyte, positive electrode, manufacturing method
Patent
All-solid-state rechargeable battery and method for manufacturing all-solid-state rechargeable battery
Patent published on the 2026-05-27 in EP under Ref EP4749695 by SAMSUNG SDI CO LTD [KR] (Kim Hyunwoo [kr])
Abstract: [0001] An all-solid rechargeable battery includes a first electrode powder layer, a solid electrolyte powder layer disposed on the first electrode powder layer, and a second electrode powder layer disposed on the solid electrolyte powder layer.[...]
Our summary: The all-solid-state rechargeable battery consists of a first electrode powder layer, a solid electrolyte powder layer, and a second electrode powder layer. The layers are arranged sequentially to form the battery structure. A method for manufacturing this type of battery is also described.
all-solid-state battery, solid electrolyte, electrode layers, manufacturing method
Patent
Electrolyte composition with improved high-temperature safety and lithium secondary battery comprising same
Patent published on the 2026-05-27 in EP under Ref EP4749747 by LG ENERGY SOLUTION LTD [KR] (Suh Soo Min [kr], Lee Chul Haeng [kr], Ahn Kyoung Ho [kr], Oh Young Ho [kr], Jeong You Kyeong [kr], Im Tae Yeong [kr])
Abstract: [0001] The present disclosure relates to an electrolyte composition for lithium secondary batteries. The electrolyte composition for lithium secondary batteries includes a fluorine-substituted linear ester solvent and a fluorine-substituted acrylic additive as a non-aqueous organic solvent and an electrolyte additive, respectively, thereby enabling uniform formation of a solid electrolyte interface layer (SEI layer) with high lithium ion conductivity and excellent heat resistance on the negative[...]
Our summary: The disclosure presents an electrolyte composition for lithium secondary batteries that enhances high-temperature safety. It includes a fluorine-substituted linear ester solvent and a fluorine-substituted acrylic additive. This composition improves lithium ion conductivity and reduces heat generation during battery activation.
Electrolyte composition, lithium secondary battery, solid electrolyte interface, high-temperature safety
Patent
Methods for improving critical current density in a sulfide-based all-solid-state lithium-ion battery
Patent published on the 2026-05-21 in WO under Ref WO2026106326 by UNIV CALIFORNIA [US] (Liu Ping [us], Zhou Ke [us], Liu Mengchen [us], Oh Jeongwoo [kr], Song Min Sang [kr])
Abstract: Solid electrolyte compositions and solid-state batteries are disclosed, which comprise a solid electrolyte layer including a sulfide-containing solid-state electrolyte material and a compound of Chemical Formula 1. The sulfide-containing solid-state electrolyte material includes but is not limited to Li6PS5Cl ("LPSC"), an LPS-based glass or glass ceramic of formula xLi2S·yP2S5, wherein x+y=1, or an argyrodite-based sulfide-based solid electrolyte or formula Li6PS5X, wherein X = Cl, Br, or I) or[...]
Our summary: This content discusses methods to enhance critical current density in sulfide-based all-solid-state lithium-ion batteries. It describes solid electrolyte compositions that include sulfide-containing materials like Li6PS5Cl and various formulations. The focus is on improving performance through advanced solid electrolyte layers.
sulfide electrolyte, solid-state battery, critical current density, lithium-ion battery
Patent
Heating element and solid state battery comprising the same, and methods of making and operating thereof
Patent published on the 2026-05-21 in US under Ref US20260142267 by AMPCERA INC [US] (Du Hui [us], Yi Eongyu [us], Brown James Emery [us])
Abstract: [0000] A solid-state battery comprising a positive electrode and a negative electrode, with a solid electrolyte layer positioned between them. The battery includes a positive current collector in electrical contact with the positive electrode and a negative current collector in electrical contact with the negative electrode. A heating element is situated in proximity to at least one of the current collectors, comprising a polymer substrate with a first surface and a second surface. A conductive [...]
Our summary: The solid-state battery features a positive and negative electrode separated by a solid electrolyte. A heating element is integrated near the current collectors, utilizing a polymer substrate with a conductive oxide layer. The design includes insulation to enable efficient heating for optimal battery operation.
solid-state battery, heating element, polymer substrate, conductive oxide
Patent
Crosslinked Zwitterionic PVA-g-SBMA/PEDOT:PSS Networks for Mechanically Robust All-Solid-State Electrolytes
Published on 2026-01-28 by Chia-Wen Wei, Chia-Yu Chen, Shyh-Chyang Luo, Dmitry G. Belov, Szu-Nan Yang @MDPI
Abstract: Conventional lithium-ion batteries face issues like electrolyte leakage and interface instability. Solid-state lithium batteries with solid electrolytes address these, while solid-state polymer electrolytes (SPEs) offer safety and flexibility. This study primarily aimed to develop and synthesize a graft copolymer, PVA-g-SBMA, which was successfully synthesized by grafting [2-(methacryloyloxy)ethyl] dimethyl-(3-sulfopropyl)ammonium hydroxide (SBMA) onto poly(vinyl alcohol) (PVA). PVA provided exc[...]
Our summary: This study developed a graft copolymer, PVA-g-SBMA, by grafting SBMA onto PVA to enhance ionic conductivity and mechanical properties in solid-state electrolytes. The copolymer was crosslinked with PEDOT:PSS to form a robust network, improving film performance. The optimal system achieved a conductivity of 4.9 × 10⁻⁴ S/cm at room temperature with specific lithium salt concentrations.
Crosslinked, Zwitterionic, Solid-state, Electrolytes
Publication
Advances in Sodium Ion Batteries Based on Mixed Electrolytes of ILs and Organic Solvents
Published on 2026-01-28 by Sajjad Ghiyami, Claudio Mele @MDPI
Abstract: Sodium-ion batteries (SIBs) represent a topic of extreme interest in the research field, especially because the materials used are cheaper than those in lithium-ion batteries (LIBs). In SIBs, the choice of cathodes and electrolytes is very important because they will affect the energy density, cycling stability, and safety of the battery. This work focuses on the prospect of hybrid electrolyte cells that incorporate ionic liquids (ILs) into organic liquids in order to improve the safety and perf[...]
Our summary: This study explores the use of hybrid electrolytes combining ionic liquids and organic solvents in sodium-ion batteries. It highlights improvements in ionic conductivity, electrochemical stability, and thermal safety. The research suggests that these advancements could enhance the performance and lifecycle of sodium-ion battery technology for large-scale energy storage applications.
Sodium-ion batteries, hybrid electrolytes, ionic liquids, energy storage
Publication
